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XIONG Qihua Professor

Tel：010-62772686

Fax：010-62781604

E-mail address: qihua_xiong@tsinghua.edu.cn

Address：Department of Physics, Tsinghua University, B316 New Science Building,Beijing 100084

/info/1101/4551.htm

Career Development

Academic Training：

1993/09-1997/07 Wuhan University B.Sc. in physics

1997/09-2000/07 Shanghai Institute of Applied Physics,CAS M.Sc. in physics

2000/09-2006/06 The Pennsylvania State University,USA Ph.D. in materials physics with Professor Peter Eklund

Employment History：

2006/06-2009/06 Havard University Postdoctoral Fellow with Professor Charles Lieber

2009/06-2014/03 Nanyang Technological University Division of Physics and Applied Physics Nanyang Assistant Professor and Singapore NRF Fellow

2014/03-2016/08 Nanyang Technological University Nanyang Associate Professor

2016/08-2021/01 Nanyang Technological University Professor

2021/02-present Tsinghua University, Department of Physics Professor

Teaching Experience

《Optics, Vibrations and Waves》 and 《Electromagnetism》

Research Statement

Professor Xiong’s research focuses on optical spectroscopy and ultrafast spectroscopy for condensed matter. His main interests include quantum physical properties emerged from quantum confined effect and anisotropy in low-dimensional quantum materials, strong light-matter coupling in such materials, light-induced phenomenon and the resulted new functionalities in photonics and optoelectronics.

1.Semiconductor microcavity enhanced light-matter interactions, exciton polariton Bose-Einstein condensate and lasing, and the ultrafast nonequilibrium dynamics;

2.Ultrafast dynamics of excitons perovskite semiconductors, exciton fine structures, exciton polariton lattices, nonlinear optical properties and polaritonic devices;

3.Two-dimensional (2D) semiconductors, van der Waals heterostructures, ultrafast charge and energy transfer dynamics;

4.2D van der Waals heterostructures and their photonics/optoelectronics devices.

Dr Xiong has supervised more than 50 postdoctoral fellows and graduated 20 Ph.D. in the past decade, among them more 9 of them have become faculty or staff in universities or institutions in USA, UK, Belgium, India and Singapore, 32 of them have become faculty in universities or institutions in.

We are always having openings for excellent postdoctoral fellows, and we look forward to recruit at least two excellent Ph.D. students to joins our group every year. Please email me if you are interested.

Fellowship and Awards：

2022 Fellow, Materials Research Society

2021 Fellow, Optical Society of America

2019 Academician, Asian Pacific Academy of Materials

2018 Fellow, American Physical Society

2019-2022 Highly cited scientist by Clarivate（cross-field）

2015 IPS Nanotechnology Physics Award, IoP Singapore

2014 Inaugural NRF Investigatorship Award, Singapore National Research Foundation

2014 Nanyang Award for Research Excellence, Nanyang Technological University

2009 NRF Fellow, Singapore National Research Foundation

Service：

2021-present Associate Editor for《物理学报》and Chinese Physics B

2020-present Associate Editor for Nano Letters and《半导体学报》

2018-present International Advisory Committee members for ACS Photonics、Nano Research、Science China Materials, eScience, Science Bulletin, and National Science Open

2018-2020 Served as Associate Editor for Optics Express

Selected Journal Publications and Patents（*corresponding author）

Professor Qihua Xiong has published more than 300 papers，including 4 papers in Nature, 26 papers in Nature sister journals such as Nature Physics、Nature Review Physics, Nature Photonics、Nature Materials, Nature Nanotechnology, Nature Chemistry, and Nature Communications. 2 papers in Physical Review Letters, 1 paper in Science and 7 papers in Science Advances, 2 papers in PNAS, 49 papers in Nano Letters and 11 papers in Advanced Materials，which have attracted a total citation of more than 25000 times, with an H-index of 87. He ranked number one in the world by Google Scholar in the field of Semiconductor Optics. He has edited or authored five books or book chapters. He has nine patents pending or licensed in USA, Europe and China.

Strong light-matter coupling, exciton polariton Bose-Einstein condensate and lasing：

1. J.Q. Wu^#, S. Ghosh^#, Y.S. Gan, Y. Shi, S. Mansal, H.D. Sun, B.L. Zhang, T.C.H. Liew*, R. Su*, and Qihua Xiong*, “High-order topological polariton corner state lasing”, Science Advances 9, eadg432. DOI: 10.1126/sciadv.adg4322 (2023)

2. S. Zhang, Z.Y. Zhu, W.N. Du, X.X. Wu, S. Ghosh, Q. Zhang, Qihua Xiong, and X.F. Liu*, “All-optical control of rotational exciton polaritons condensate in perovskite microcavities”, ACS Nano DOI: 10.1021/acsphotonics.2c01869 (2023)

3. M.Y. Leng, J.Q. Wu, K. Dini, J. Liu, Z.H. Hu, J. Tang, T.C.H. Liew, H.D. Sun, R. Su*, and Qihua Xiong*, “Optically pumped polaritons in perovskite light-emitting diodes”, ACS Photonics, DOI: 10.1021/acsphotonics.2c01999 (2023)

4. J.X. Zhao, A. Fieramosca*, K. Dini, R.Q. Bao, W. Du, R. Su, Y. Luo, W.J. Zhao, D. Sanvitto, T.C.H. Liew* & Qihua Xiong* “Exciton polariton interactions in Van der Waals superlattices at room temperature”, Nature Communications 14, 1512, DOI: 10.1038/s41467-023-36912-3 (2023)

5. J. Wang*, Y.T. Peng, H.W. Xu, J.G. Feng, Y.Q. Huang, J.Q. Wu, T.C.H. Liew*, and Qihua Xiong*, “Controllable vortex lasing arrays in a geometrically frustrated exciton-polariton lattice at room temperature”, National Science Review 10 nwac096. DOI: 10.1093/nsr/nwac096 (2023)

6. S. Ghosh, R. Su*, J.X. Zhao, A. Fieramosca, J.Q. Wu, T.F. Li, Q. Zhang, F. Li, Z.H. Chen, T.C.H. Liew, D. Sanvitto, Qihua Xiong*, “Microcavity exciton polaritons at room temperature”, Photonics Insights 1, R04 (2022)

7. J.X. Zhao^#, A. Fieramosca^#,*, R.Q. Bao, W. Du, K. Dini, R. Su, J.G. Feng, Y. Luo, D. Sanvitto, T.C.H. Liew, and Qihua Xiong*, “Nonlinear polariton parametric emission in an atomically thin semiconductor based microcavity”, Nature Nanotechnol. 17, 396–402 (2022)

8. L. Zhang, J.Q. Hu, J.Q. Wu, R. Su, Z.H. Chen, Qihua Xiong, H. Deng*, “Recent developments on polariton lasers”, Progress in Quantum Electronics 83, 100399 (2022)

9. J.G. Feng^#^,*, Jun Wang^#, A. Fieramosca^#, R.Q. Bao, J.X. Zhao, R. Su, Y.T. Peng, T.C.H. Liew, D. Sanvitto, and Qihua Xiong*, “All-optical switching based on interacting exciton polaritons in self-assembled perovskite microwires”, Science Advances 7, eabj6627 (2021)

10. Rui Su*^,^#, Eliezer Estrecho*^,^#, D. Biegańska, Y.Q. Huang, M. Wurdack, M. Pieczarka, A.G. Truscott, T.C.H. Liew, E.A. Ostrovskaya* and Qihua Xiong*, “Direct measurement of a non-Hermitian topological invariant in a hybrid light-matter system”, Science Advances 7, abj8905 (2021)

11. J.Q. Wu, R. Su*, A. Fieramosca, S. Ghosh, J.X. Zhao, T.C.H. Liew*, and Qihua Xiong*, “Perovskite polariton parametric oscillator”, Adv. Photon. 3, 055003 (2021)

12. R. Su^#, A. Fieramosca^#, Q. Zhang, H.S. Nguyen, E. Deleporte, Z.H. Chen, D. Sanvitto*, T.C.H. Liew and Qihua Xiong*, “Perovskite semiconductors for room-temperature exciton-polaritonics”, Nature Materials 20, 1315–1324 DOI: 10.1038/s41563-021-01035-x (perspectives) (2021)

13. R. Su*^,#, S. Ghosh^#, T.C.H. Liew*, and Qihua Xiong*, “Optical switching of topological phase in a perovskite polariton lattice”, Science Advances 7, eabf8049. DOI: 10.1126/sciadv.abf8049 (2021)

14. J.X. Zhao^#, R. Su^#, A. Fieramosca^#, W.J. Zhao, W. Du, X. Liu, C. Diederichs, D. Sanvitto, T.C.H. Liew, and Qihua Xiong*, “Ultralow threshold polariton condensate in a monolayer semiconductor microcavity at room temperature”, Nano Lett. 21, 3331–3339. DOI: 10.1021/acs.nanolett.1c01162 (2021)

15. R. Su, S. Ghosh, J. Wang, S. Liu, C. Diederichs, T.C.H. Liew*, and Qihua Xiong*, “Observation of exciton polariton condensation in a perovskite lattice at room temperature”, Nature Physics 16, 301-306 (2020)

16. R. Su, J. Wang, J.X. Zhao, J. Xing, W.J. Zhao, C. Diederichs, T.C.H. Liew* and Qihua Xiong*, “Room temperature long-range coherent exciton polariton condensate flow in lead halide perovskites”, Science Advances 4, eaau0244, DOI: 10.1126/sciadv.aau0244 (2018)

17. J. Wang, R. Su, J. Xing, D. Bao, C. Diederichs, S. Liu, T.C.H. Liew, Z.H. Chen*, Qihua Xiong*, “Room temperature coherently coupled exciton polaritons in two-dimensional organic-inorganic perovskite”, ACS Nano 12, 8382-8389 (2018)

18. R. Su, C. Diederichs, J. Wang, T.C.H. Liew, J.X. Zhao, S. Liu, W. Xu, Z.H. Chen, and Qihua Xiong*, “Room-temperature polariton lasing in all-inorganic perovskite nanoplatelets”, Nano Lett. 17, 3982–3988 (2017)

Optical spectroscopy of two-dimensional magnetic materials and quasiparticle dynamics

1. C. Ye, C. Wang, Q. Wu, S. Liu, J.Y. Zhou, G.P. Wang, A. Söll, Z. Sofer, M. Yue, X. Liu*, M.L. Tian, Qihua Xiong*, W. Ji*, and X.R. Wang*, “Layer-Dependent Interlayer Antiferromagnetic Spin Reorientation in Air-Stable Semiconductor CrSBr”, ACS Nano, DOI: 10.1021/acsnano.2c01151 (2022)

2. A.J. Yang*, K. Han, K. Huang, C. Ye, W. Wen, R.X. Zhu, R. Zhu, J. Xu, T. Yu, P. Gao, Qihua Xiong, and R.X. Wang*, “Van der Waals integration of high-kappa perovskite oxides and two-dimensional semiconductors”, Nature Electron. 5, 233–240 (2022)

3. K. Lee, D.-K. Lee, D.S. Yang, R. Mishra, D.-J. Kim, S. Liu, Qihua Xiong, S.K. Kim, K.-J. Lee, and H.S. Yang*, “Superluminal-like magnon propagation in antiferromagnetic NiO at nanoscale distances”, Nature Nanotechnol. 16, 1337–1341. DOI: 10.1038/S41565-021-00983-4 (2021)

4. S. Liu, A. Granados del Aguila, D. Bhowmick, C.K. Gan, T. Thu Ha Do, M.A. Prosnikov, D. Sedmidubsky, Z. Sofer, P.C.M. Christianen, P. Sengupta*, and Qihua Xiong*, “Direct observation of magnon-phonon strong coupling in two-dimensional antiferromagnet at high magnetic fields”, Phys. Rev. Lett. 127, 097401, DOI: 10.1103/PhysRevLett.127.097401 (2021)

5. T.T. Yin^#, K.A. Ajit Ulman^#, S. Liu, A. Granados del Águila, Y.Q. Huang, L.F. Zhang, M. Serra, D. Sedmidubsky, Z. Sofer, S.Y. Quek*, and Qihua Xiong*, “Chiral phonons and giant magneto-optical effect in CrBr₃ 2D magnet”, Adv. Mater. 33, 2101618, DOI: 10.1002/ADMA.202101618 (2021)

6. S. Liu^#, Y.Z. Wu^#, X. Liu, A. Granados del Aguila, F.Y. Xuan, A. Chaturvedi, H. Zhang, S.Y. Quek*, and Qihua Xiong*, “Light-matter interactions in high quality manganese-doped two-dimensional molybdenum diselenide”, Sci. China. Mater. DOI:10.1007/s40843-020-1641-9 (2021)

7. X.Z. Wang, K.Z. Du, Y.Y. Liu, P. Hu, J. Zhang, Q. Zhang, M.H. Owen, X. Lu, C.K. Gan, P. Sengupta, C. Kloc and Qihua Xiong*, “Raman spectroscopy of atomically thin two-dimensional magnetic iron phosphorus trisulfide (FePS₃) crystals”, 2D Materials 3, 031009 (2016)

8. K.Z. Du, X.Z. Wang, Y. Liu, P. Hu, M.I.B. Utama, C.K. Gan, Qihua Xiong* and C. Kloc*, “Weak Van der Waals stacking, wide-range band gap and Raman study on ultrathin layers of metal phosphorus trichalcogenides”, ACS Nano 10, 1738-1743 (2016)

Low-dimensional quantum materials, exciton physics and ultrafast carrier dynamics：

1. M.-R. Amara, Z. Said, C.X. Huo, A. Pierret, C. Voisin, W.-B. Gao, Qihua Xiong, and C. Diederichs*, “Spectral fingerprint of quantum confinement in single CsPbBr₃ nanocrystals”, Nano Lett. 23, 3607–3613 (2023)

2. Y.Q. Huang*, R. Su, Y.B. Wang, C. Zhu, J.G. Feng, J.X. Zhao, Z. Liu, and Qihua Xiong*, “A Fano cavity-photon interface for directional suppression of spectral diffusion of a single perovskite nanoplatelet”, Nano Lett. DOI 10.1021/acs.nanolett.2c03073 (2022)

3. W.J. Zhao, R. Su, Y.Q. Huang, J.Q. Wu, C.F. Fong, J.G. Feng, and Qihua Xiong*, “Transient circular dichroism and exciton spin dynamics in all-inorganic halide perovskites”, Nature Communications 11, 5665, DOI: 10.1038/s41467-020-19471-9 (2020)

4. S. Liu, A. Granados del Águila*, X. Liu, Y.H. Zhu, Y. Han, A. Chaturvedi, P. Gong, H.Y. Yu, H. Zhang, W. Yao, and Qihua Xiong*, “Room-temperature valley polarization in atomically thin semiconductors via chalcogenide alloying”, ACS Nano 14, 9873–9883 (2020)

5. T. Thu Ha Do, A. Granados del Águila, D. Zhang, J. Xing, S. Liu, M.A. Prosnikov, W.B. Gao, K. Chang, P.C.M. Christianen, and Qihua Xiong*, “Bright exciton fine-structure in two-dimensional lead halide perovskites”, Nano Lett. 20, 5141–5148 (2020)

6. J.X. Zhao, W.J. Zhao, W. Du, R. Su, and Qihua Xiong*, “Dynamics of exciton energy renormalization in monolayer transition metal disulfides”, Nano Research 13, 1399–1405 (2020)

7. C.X. Huo, C.F. Fong, M.-R Amara, Y.Q. Huang, B. Chen, H. Zhang, L.J. Guo, H.J. Li, W. Huang, C. Diederichs, and Qihua Xiong*, “Optical spectroscopy of single colloidal CsPbBr₃ perovskite nanoplatelets”, Nano Lett. 20, 3673–3680 (2020)

8. S. Liu, S.S. Sun*, C.K. Gan*, A. Granados del Aguila, Y.N. Fang, J. Xing, T. Thu Ha Do, T.J. White, H.G. Li, W. Huang and Qihua Xiong*, “Manipulating efficient light emission in two-dimensional perovskite crystals by pressure-induced anisotropic deformation”, Science Advances 5, eaav9445 (2019) (Highlighted by Nature website and Nature Review Chemistry journal)

9. X.L. Wen, W.G. Xu, W.J. Zhao, J.B. Khurgin and Qihua Xiong*, “Plasmonic hot carriers controlled second harmonic generation in WSe₂ bilayers”, Nano Lett. 18, 1686-1692 (2018)

10. C.Y. Jiang, W.G. Xu, A. Rasmita, Z.M. Huang, K. Li, Qihua Xiong* and W.B. Gao*, “Microsecond dark-exciton valley polarization memory in two-dimensional heterostructures”, Nature Communications 9, 753, Doi:10.1038/s41467-018-03174-3 (2018) (Editors’ Highlights)

11. G.K. Long, C.Y. Jiang, R. Sabatini, Z.Y. Yang, M.Y. Wei, L.N. Quan, Q.M. Liang, A. Rasmita, M. Askerka, G. Walters, X.W. Gong, J. Xing, X.L. Wen, R. Quintero-Bermudez, H.F. Yuan, G.C. Xing, X.R. Wang, D.T. Song, O. Voznyy, M.T. Zhang, S. Hoogland, W.B. Gao*, Qihua Xiong* and E.H. Sargent*, “Spin control in reduced-dimensional chiral perovskites”, Nature Photonics 12, 528-533 (2018)

12. T. Thu Ha Do, A. Granados del Aguila, C. Cui, J. Xing, Z.J. Ning* and Qihua Xiong*, “Optical study on intrinsic exciton states in a high-quality CH₃NH₃PbBr₃ single crystal”, Phys. Rev. B 96, 075308 (2017)

Two-dimensional van der Waals heterostructures and ultrafast charge/energy transfer：

1. Q. Lv^#, J.Y. Tan^#, Z.J. Wang^#, P. Gu^#, H.Y. Liu, L.X. Yu, Y.P. Wei, L. Gan, B.L. Liu*, J. Li*, F.Y. Kang, H.-M. Cheng, Qihua Xiong*, and R.T. Lv*, “Ultrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe₂ heterostructures for attomolar-level molecular sensing”, Nature Communications 14, 2717. DOI: 10.1038/s41467-023-38198-x (2023)

2. Y.F. Zhang^#, Q. Lv^#, H.D. Wang*, S.Y. Zhao, Qihua Xiong, R.T. Lv*, and X. Zhang*, “Simultaneous electrical and thermal rectification in a monolayer lateral heterojunction”, Science 378, 169-175 (2022)

3. H. Li, H.L. Li, X.Z. Wang, Y.F. Nie, C. Liu, Y. Dai, J.Y. Ling, M.N. Ding, X. Ling, D.Q. Xie, N. Lu, C.J. Wan, Qihua Xiong*, and W.G. Xu*, “Spontaneous Polarity Flipping in a 2D Heterobilayer Induced by Fluctuating Interfacial Carrier Flows”, Nano Lett. 21, 6773–6780 (2021)

4. H. Li, H.L. Li, X.Z. Wang, Y.F. Nie, C. Liu, Y. Dai, J.Y. Ling, M.N. Ding, X. Ling, D.Q. Xie, N. Lu, C.J. Wan, Qihua Xiong*, and W.G. Xu*, “Spontaneous Polarity Flipping in a 2D Heterobilayer Induced by Fluctuating Interfacial Carrier Flows”, Nano Lett. 21, 6773–6780 (2021)

5. Z.H. Hu, P.L. Hernández-Martínez, X. Liu, M.-R. Amara, W.J. Zhao, K. Watanabe, T. Taniguchi, H.V. Demir and Qihua Xiong*, “Trion-mediated Förster resonance energy transfer and optical gating effect in WS₂/hBN/MoSe₂ heterojunction”, ACS Nano 14, 13470–13477, DOI: 10.1021/acsnano.0c05447 (2020)

6. X. Liu, J.J. Pei, Z.H. Hu, W.J. Zhao, S. Liu, M.-R. Amara, K. Watanabe, T. Taniguchi, H. Zhang, and Qihua Xiong*, “Manipulating charge and energy transfer between 2D atomic layers via heterostructure engineering”, Nano Lett. 20, 5359–5366 (2020)

7. W. Du, J.X. Zhao, W.J. Zhao, S.P. Zhang, H.X. Xu and Qihua Xiong*, “Ultrafast modulation of exciton–plasmon coupling in a monolayer WS₂–Ag nanodisk hybrid system”, ACS Photonics 6, 2832-2840 (2019)

8. C.Y. Jiang, A. Rasmita, W.G. Xu, A. Imamoglu, Qihua Xiong* and G.B. Gao*, “Optical spin pumping induced pseudomagnetic field in two-dimensional heterostructures”, Phys. Rev. B 98, 241410 (2018) (Rapid Communications)

9. W.J. Zhao and Qihua Xiong*, “Nanoscale interfaces made easily”, Nature 553, 32-34 (2018) (News and Views)

10. C.Y. Jiang, A. Rasmita, W.G. Xu, A. Imamoglu, Qihua Xiong* and G.B. Gao*, “Optical spin pumping induced pseudomagnetic field in two-dimensional heterostructures”, Phys. Rev. B 98, 241410 (2018) (Rapid Communications)

11. W.G. Xu, W.W. Liu, J. F. Schmidt, W.J. Zhao, X. Lu, T. Raab, C. Diederichs, W.B. Gao, D. V. Seletskiy, and Qihua Xiong*, “Correlated fluorescence blinking in two-dimensional semiconductor heterostructures”, Nature 541, 62-67 (2017)

12. H.K. Yu, D. Talukdar, W.G. Xu, J.B. Khurgin* and Qihua Xiong*, "Charge-Induced Second-Harmonic Generation in Bilayer WSe₂", Nano Lett. 15, 5653-5657 (2015)

Semiconductor optical gain properties, nanophotonics and optoelectronics：

1. Y. Chen^#, J.G. Feng^#^,*, Y.Q. Huang^#, W.J. Chen, R. Su, S. Ghosh, Y. Hou, Qihua Xiong*, and C.-W. Qiu*, “Compact spin-valley-locked perovskite emission”, Nature Materials, DOI:10.1038/s41563-023-01531-2 (2023)

2. L. Ferrier*, P. Bouteyre*, A. Pick, S. Cueff, N. H. M Dang, C. Diederichs, A. Belarouci, T. Benyattou, J. X. Zhao, R. Su, J. Xing, Qihua Xiong, and H. S. Nguyen*, “Unveiling the enhancement of spontaneous emission at exceptional points”, Phys. Rev. Let. 129, 083602, DOI: 10.1103/PhysRevLett.129.083602 (2022)

3. C.Y. Jiang, A. Rasmita, H. Ma, Q.H. Tan, Z.W. Zhang, Z.M. Huang, S. Lai, N.Z. Wang, S. Liu, X. Liu, T. Yu, Qihua Xiong*, and W.-B. Gao*, “A room-temperature gate-tunable bipolar valley Hall effect in molybdenum disulfide/tungsten diselenide heterostructures”, Nature Electron. 5, 23–27 (2022)

4. Y. Chen, W. Du, Q. Zhang, O. Ávalos-Ovando, J. Wu, Q.-H. Xu, N. Liu, H. Okamoto, A.O. Govorov, Qihua Xiong*, and Cheng-Wei Qiu*, “Multidimensional nanoscopic chiroptics”, Nature Review Physiscs, DOI: 10.1038/s42254-021-00391-6 (2021) (Perspectives)

5. K.B. Lin, J. Xing, L.N. Quan, F. Pelayo García de Arquer, X.W. Gong, J.X. Lu, L.Q. Xie, W.J. Zhao, D. Zhang, C.Z. Yan, W.Q. Li, X.Y. Liu, Y. Lu, J. Kirman, E.H. Sargent*, Qihua Xiong*, and Z.H. Wei*, “Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent”, Nature 562, 245-248 (2018)

6. J. Xing, Y.B. Zhao, M. Askerka, L.N. Quan, X.W. Gong, W.J. Zhao, J.X. Zhao, H.R. Tan, G.K. Long, L. Gao, Z.Y. Yang, O. Voznyy, J. Tang, Z.H. Lu*, Qihua Xiong* and E.H. Sargent*, “Color-stable highly luminescent sky-blue perovskite light-emitting diodes” Nature Communications, DOI: 10.1038/s41467-018-05909-8 (2018)

7. F. Yan, J. Xing, G.C. Xing, L. Quan, S.T. Tan, J.X. Zhao, R. Su, L.L. Zhang, S. Chen, Y.W. Zhao, A. Huan, E.H. Sargent*, Qihua Xiong* and H.V. Demir*, “Highly efficient visible colloidal lead-halide perovskite nanocrystal light-emitting diodes”, Nano Lett. 18, 3157-3164 (2018)

8. Q. Zhang, R. Su, X.F. Liu, T.Z. Sum* and Qihua Xiong*, “High quality whispering-gallery-mode lasing from cesium lead halide perovskite nanoplatelets”, Adv. Funct. Mater. 26, 6238-6245 (2016)

9. J. Xing, F. Yan, Y.W. Zhao, S. Chen, H.K. Yu, Q. Zhang, R.G. Zeng, H.V. Demir, X.W. Sun, A. Huan and Qihua Xiong*, “High-efficiency light-emitting diodes of organometal halide perovskite amorphous nanoparticles”, ACS Nano 10, 6623-6630 (2016)

10. J. Xing, F. Yan, Y.W. Zhao, S. Chen, H.K. Yu, Q. Zhang, R.G. Zeng, H.V. Demir, X.W. Sun, A. Huan and Qihua Xiong*, “High-efficiency light-emitting diodes of organometal halide perovskite amorphous nanoparticles”, ACS Nano 10, 6623-6630 (2016)

11. J. Xing, X.F. Liu, Q. Zhang, S.T. Ha, Y.W. Yuan, C. Shen, T.C. Sum and Qihua Xiong*, "Vapor phase synthesis of organometal halide perovskite nanowires for tunable room-temperature nanolasers", Nano Lett. 15, 4571 - 4577 (2015)

12. Q. Zhang, S.T. Ha, X.F. Liu, T.C. Sum* and Qihua Xiong*, “Room-temperature near-infrared high-Q perovskite whispering-gallery planar nanolasers”, Nano Lett. 14, 5995-6001 (2014)

13. S.T. Ha, X.F. Liu, Q. Zhang, D. Giovanni, T.C. Sum and Qihua Xiong*, “Synthesis of organic-inorganic lead halide perovskite nanoplatelets: Towards high performance perovskite solar cells and opto-electronic devices”, Adv. Opt. Mater. 2, 838-844 (2014) (highlighted as Best of Advanced Optical Materials – 2014 edition)

14. Q. Zhang, G.Y. Li, X.F. Liu, F. Qian, Y. Li, T.C. Sum, C.M. Lieber* and Qihua Xiong*, “A room temperature low-threshold ultraviolet plasmonic nanolaser”, Nature Communications 5, 4953. DOI: 10.1038/ncomms5953 (2014)

Raman spectroscopy, semiconductor laser cooling and resolved-sideband Raman cooling of optical phonons：

1. J. Zhang*, Q. Zhang, X.Z. Wang, K. L. Kwek and Qihua Xiong*, “Resolved sideband Raman cooling of an optical phonon in semiconductor materials”, Nature Photonics 10, 600-605 (2016)

2. S.T. Ha, C. Shen, J. Zhang and Qihua Xiong*, “Laser cooling of organic-inorganic lead halide perovskites”, Nature Photonics 10, 115-121 (2016)

3. Q. Zhang, X.F. Liu, M.I.B. Utama, G.C. Xing, T.C. Sum* and Qihua Xiong*, “Phonon-assisted anti-Stokes lasing in ZnTe nanoribbons”, Adv. Mater. 28, 276-283 (2016)

4. X. Luo, X. Lu, G.K. Wai Koon, A.H.C. Neto, B. Özyilmaz*, Qihua Xiong*, and S.Y. Quek*, "Large frequency change with thickness in interlayer breathing mode — significant interlayer interactions in few layer black phosphorus", Nano Lett. 15, 3931-3938 (2015)

5. D.H. Li, J. Zhang, X.J. Wang, B.L. Huang and Qihua Xiong*, “Solid-state semiconductor optical cryocooler based on CdS nanobelts”, Nano Lett. 14, 4724–4728 (2014)

6. J. Zhang, D.H. Li, R.J. Chen, and Qihua Xiong*, “Laser cooling of a semiconductor by 40 Kelvin”, Nature 493, 504-508 (2013) (Nature Cover Highlight, highlighted by Nature Photonics in its April and May issues, news coverage by German Public Radio, German Science News, Physics world by IoP, Txchnologist, Arstechnia, The Statesman-The Oldest English Newspaper of India, Wiley Materials Views China, Phys Org, Channel Asia, The Strait Times, and so forth)

7. Y.Y. Zhao, X. Luo, H. Li, J. Zhang, P.T. Araujo, C.K. Gan, J. Wu, H. Zhang*, S.Y. Quek*, M.S. Dresselhaus, and Qihua Xiong*, “Interlayer breathing and shear modes in few-trilayer MoS₂ and WSe₂”, Nano Lett. 13, 1007-1015 (2013)

8. Q. Zhang, X.F. Liu, M.I.B. Utama, J. Zhang, M. de la Mata, J. Arbiol, Y.H. Lu, T.C. Sum, and Qihua Xiong*, “Highly enhanced exciton recombination rate by strong electron-phonon coupling in single ZnTe nanobelt”, Nano Lett. 12, 6420-6427 (2012)

9. Q. Zhang, J. Zhang, M.I.B. Utama, B. Peng, M. de la Mata, J. Arbiol, and Qihua Xiong*, “Exciton-phonon coupling in individual ZnTe nanorods studied by resonant Raman spectroscopy”, Phys. Rev. B 85, 085418 (2012)

10. J. Zhang, Z.P. Peng, A. Soni, Y.Y. Zhao, Y. Xiong, B. Peng, J.B. Wang, M.S. Dresselhaus, and Qihua Xiong*, “Raman spectroscopy of few-quintuple layer topological insulator Bi₂Se₃ nanoplatelets”, Nano Lett. 11, 2407-2414 (2011)

Patent and Commercialization:

1. Qihua Xiong, Bo Peng, “Monolayer of Nanorods on A Substrate and Method of Forming The Same”. US Patent Application No: 14/773, filing date: September 4^th 2015. US Patent granted on August 7^th, 2018 (Patent No. US 10,041,886 B2, pending); China Patent Application Number: 201480017158.8, patent granted on October 13^th, 2017 (Patent No.: ZL 2014 8 0017158.8, pending).

2. Qihua Xiong, S.T. Ha, C. Shen and J. Zhang, “Laser Cooling of Organic-Inorganic Lead Halide Perovskites” US Provisional Patent (Application Number is TD/165/14), June 24^th, 2014; granted on December 24^th, 2019 (Patent No.: US 10,514,188 B2, pending).

3. Qihua Xiong, C. Cao and J. Zhang, “Alphabetical Metamaterial Gate/Sensor Device and Its Use to Measure Mercury”, US Provisional Patent (Application Number is 61/833,130), 10^th June 2013; granted on November 5^th, 2019 (Patent No.: US 10,466,180 B2, pending)

4. Qihua Xiong, C. Cao and J. Zhang, “Metamaterial Device and Uses Thereof”, Chinese patent Application Number: 201480033310.1, granted on August 7^th, 2018. (Patent No.: ZL201480033310.1, pending)

5. Qihua Xiong and B. Peng, “Vertical-Aligned Monolayer of Au Nanorods On Arbitrary Substrates: Femtomolar Detection Of Phthalate Plasticizers”, PAT/046/13/13/US PRV, 5 April, 2013 (Application number 61/773,617).

6. Qihua Xiong, J. Zhang and D.H. Li, “Laser Cooling Of Solids Using II-VI Semiconductors”, Technology disclosure filed at Nanyang Technological University (Application number: 61/656,185) on 6 June 2012; US Patent Application No: 13/911,825, Filing Date: 06 June 2013; US patent granted on June 13^th, 2017 (Patent No.: US 9,680,278 B2, pending).

7. Qihua Xiong, X.L. Xu and J. Zhang, “Flexible Vis-IR Metamaterials and Their Applications in Highly Sensitive Chemical and Biological Sensing”, Technology disclosure filed at Nanyang Technological University (Application number: 61/494,099), International filing date 6 June 2012; United States of America Application No.: 14/124,496, Filing Date: 6 December 2013. PAT/069/11/13/PCT-SG, pending. Chinese Patent granted on March 22^nd, 2017 (Patent No.: ZL 2012 8 0028198.3). US Patent granted on June 20^th 2017 (Patent No.: US 9,683, 991 B2, pending).

8. C.M. Lieber, Qihua Xiong, P. Xie and Y. Fang, “High-Resolution Molecular Sensor,” US Serial Number 12/677,573, granted on 15 April 2014 (Patent Number: US 8,698,481 B2) and European application Number 08830263.3 (Pending), licensed to Oxford Nanopore Technology, UK.

9. Chinese Patent: "A Piece of Equipment for DNA Chip Detecting", Chinese Patent Office, Qihua Xiong, Minqian Li, Bin Li, ZL 99 2 40088.0, application date: 10/29/99, issue date: 03/29/01.