Ultrafast Spectroscopy Group @ PolyU
for optical & optoelectronic applications

2023

• C. Wang, J. Fu, Q. Wei, H. Ren, Q. Liu, L. Zhou, P. Wang, M. Li*, "Electric-Field-Enhanced Electroluminescence Color Tuning of Colloidal Type-II Tetrapods", Nano Lett. 23, 5705 (2023)

•  T. A. P. Dela Peña, R. Ma*, Z. Xing, Q. Wei, J. I. Khan, R. M. Young, Y. Hai, S. A. Garcia, X. Zou, Z. Jin, F. L. Ng, K. L. Yeung, D. Swearer, M. R. Wasielewski, J. Wang, H. Cha, H. Yan, K. S. Wong, G. Li*, M. Li*, J. Wu*, "Interface Property-Functionality Interplay: Suppresses Bimolecular Recombination Facilitating Above 18% Efficiency Organic Solar Cells Embracing Simplistic Fabrication", Energy Environ. Sci. (2023) Accepted

• H. Wei, Q. Wei, F. Fang, G. Xiang, B. Tong, C. Wang, B. Sun, X. Zhao, M. Li*, X. W. Sun*, Y. Gao*, "Blue Lasing from Heavy-metal-free Colloidal Quantum Dots", Laser Photonics Rev. 17, 2200557 (2023)

• W. Han, X. Zheng, K. Yang, C. Tsang, F. Zheng, L. W. Wong, K. H. Lai, T. Yang, Q. Wei, M. Li, W. F. Lo, F. Guo, Y. Cai, N. Wang, J. Hao, S. P. Lau, C-S. Lee, T. H. LY, M. Yang, J. Zhao "Phase-controllable large-area two-dimensional In2Se3 and ferroelectric hetero-phase junction", Nat. Nanotech. 18, 55 (2023).

• R. Ma, H. Li, T. A. Dela Peña, X. Xie, P. W-K Fong, Q. Wei, C. Yan, J. Wu, P. Cheng, M. Li, G. Li, “Tunable Donor Aggregation Dominance in Ternary Matrix of All-polymer Blends with Improved Efficiency And Stability”, Adv. Mater. 2304632 (2023).

• R. Ma, Q. Fan, T. A. Dela Peña, B. Wu, H. Liu, Q. Wu, Q. Wei, J. Wu, X. Lu, M. Li, W. Ma, G. Li "Unveiling the Morphological and Physical Mechanism of Burn-in Loss Alleviation by Ternary Matrix Toward Stable and Efficient All-Polymer Solar Cells". Adv. Mater. 35, 2212275 (2023).

• Chen, L., Yi, J., Ma, R., Ding, L., Dela Peña, T.A., Liu, H., Chen, J., Zhang, C., Zhao, C., Lu, W., Wei, Q., Zhao, B., Hu, H., Wu, J., Ma, Z., Lu, X., Li, M., Zhang, G., Li, G. and Yan, H. “An Isomeric Solid Additive Enables High-Efficiency Polymer Solar Cells Developed Using a Benzo-Difuran-Based Donor Polymer”, Adv. Mater. 35: 2301231 (2023).

• T. Xu, Z. Luo, R. Ma, Z. Chen, T. A. Dela Peña, H. Liu, Q. Wei, M. Li, C. Zhang, J. Wu, X. Lu, G. Li, C. Yang, "High‐Performance Organic Solar Cells Containing Pyrido [2, 3‐b] quinoxaline‐Core‐Based Small‐Molecule Acceptors with Optimized Orbit Overlap Lengths and Molecular Packing", Angew. Chem. Int. Ed. e202304127 (2023)

• T. Chen, W. Yu, C. K. T. Wun, T. Wu, M. Sun, S. J. Day, Z. Li, B. Yuan, Y. Wang, M. Li, Z. Wang, Y. Peng, W. Yu, K. Wong, B. Huang, T. Liang, T. W. B. Lo, “Cu–Co Dual-Atom Catalysts Supported on Hierarchical USY Zeolites for an Efficient Cross-Dehydrogenative C(sp2)–N Coupling Reaction”, J. Am. Chem. Soc. 145, 8464 (2023)

• Zhang, X., Zhou, Y., Chen, M., Wang, D., Chao, L., Lv, Y., Zhang, H., Xia, Y., Li, M., Hu, Z. and Chen, Y. “Novel Bilayer SnO2 Electron Transport Layers with Atomic Layer Deposition for High-Performance α-FAPbI3 Perovskite Solar Cells”. Small 2303254 (2023)

• H. Dong, C. Ran, W. Gao, M. Li, Y. Xia, W. Huang, "Metal Halide Perovskite for next-generation optoelectronics: progresses and prospects", eLight 3, 3 (2023) 

• C. Ran, X. Liu, W. Gao, M. Li, Z. Wu, Y. Xia, Y. Chen, "Healing aged metal halide perovskite toward robust optoelectronic devices: Mechanisms, strategies, and perspectives", Nano Energy 108, 108219 (2023)

• Ngai, K. H., Sun, X., Wang, Y., Lin, L., Chen, Z., Wei, Q., Li, M., Luan, C., Zhang, W., Xu, J., Long, M., “Understanding the Role of Small Cations on the Electroluminescence Performance of Perovskite Light-Emitting Diodes”, Adv. Funct. Mater. 33, 2211830 (2023)

• D. Wang, M. Chen, X. Zhang, L. Chao, T. Niu, Y. Lv, G. Xing, Y. Xia, M. Li, H. Zhang, Y. Chen, “Stabilization of Component-Pure α-FAPbI3 via Volatile Additives for Stable Photovoltaics”, ACS Appl. Mater. Interfaces 15, 16818 (2023)

2022

• G. Wang, T. Liu, B. Wang, H. Gu, Q. Wei, Z. Zhang, J. He*, M. Li*, G. Xing* "Hot-carrier tunable abnormal nonlinear absorption conversion in quasi-2D perovskite", Nat. Commun. 13, 6935 (2022).
• W. Gao, Q. Wei, T. Wang, J. Xu, L. Zhuang, M. Li, K. Yao, S. F. Yu, "Two-Photon Lasing from Two-Dimensional Homologous Ruddlesden–Popper Perovskite with Giant Nonlinear Absorption and Natural Microcavities", ACS Nano, 16, 13082 (2022)
• L. Zhuang, Q. Wei, C. Li, H. Ren, Y. Li, F. Shi, L. Zhai, K. Leng, M. Li, S. P. Lau, "Efficient Light‐Emitting Diodes via Hydrogen Bonding Induced Phase Modulation in Quasi‐2D Perovskites", Adv. Optical Mater., 10, 2201180 (2022)
• J. Yu#, M. Sharma#, M. Li#, B. Liu, P. L. Hernández-Martínez, S. Delikanli, A. Sharma, Y. Altintas, C. Hettiarachchi, T. C.  Sum, H. V. Demir, C. Dang. "Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells". Cell Rep. Phys Sci. 3, 101049 (2022).
• Y. Chen, J.Yin, Q.Wei, C. Wang, X. Wang, H. Ren, S. F. Yu, O. Bakr, O. Mohammed*, M. Li*, “Multiple Exciton Generation in Tin–Lead Halide Perovskite Nanocrystals for Photocurrent Quantum Efficiency Enhancement”, Nat. Photon. 16, 485 (2022)
• Y. Xu, G. Liu, J. Hu, G. Wang, M. Chen, Y. Chen, M. Li, Hui Zhang, Y. Chen "In Situ Polymer Network in Perovskite Solar Cells Enabled Superior Moisture and Thermal Resistance", J. Phys. Chem. Lett. 13, 3754 (2022)
• X. Yang#, W. Zhao#, M. Li#, L. Ye, P. Guo, Y. Xu, H. Guo, H. Yu, Q. Ye, H. Wang, D. Harvey, D. Shchukin, M. Feng, T. C. Sum, H. Wang, "Grain-Boundaries-Engineering via Laser Manufactured La-Doped BaSnO3 Nanocrystals with Tailored Surface States Enabling Perovskite Solar Cells with Efficiency of 23.74%", Adv. Funct. Mater. 2112388 (2022) 
• H. Jia, Z. Li, B. Wang, G. Xing, Y. L. Wong, H. Ren, M. Li, K. Wong, D. Lei, L. Wong, J. Zhao, W. Zhang, S. Sang, A. Jian, X. Zhang, "Plasmonic Nanohole Arrays with Enhanced Visible Light Photoelectrocatalytic Activity" ACS Photon., 9, 2, 652 (2022)
• Z. Wang, X. Liu*, H. Ren, L. Liu, X. Tang, X. Yao, Z. Su, X. Gao, Q. Wei, H. Xie, Y. Zheng*, and M. Li*, "Insight into the Enhanced Charge Transport in Quasi-2D Perovskite via Fluorination of Ammonium Cations for Photovoltaic Applications" ACS Appl. Mater. Interfaces, 14, 7917 (2022)
• Z. Wang, L. Liu, X.Liu*, D.Song, D.Shi, S.Wu, Y. Tong, H.Ren, M.Li*, Y.Zheng*, D. Zhao*, "Uncovering synergistic effect of chloride additives for efficient quasi-2D perovskite solar cells" Chem. Eng. J., 432, 134367 (2022)

2021

• Y. Li, S. Cai, W.K. Lai, C. Wang, L. Rogée, L. Zhuang, L. Zhai, S. Lin, M. Li, and S. P. Lau, "Impurity-Induced Robust Trionic Effect in Layered Violet Phosphorus". Adv. Optical Mater., 2101538 (2021).
• L. Zhuang, L. Zhai, Y. Li, H. Ren, M. Li, S. P. Lau, "Mixed dimensional 0D/3D perovskite heterostructure for efficient green light-emitting diodes", J. Mater. Chem. C, 9, 14318-14326 (2021)

• W. Gao, T. Wang, J. Xu, P. Zeng, W. Zhang, Y. Yao, C. Chen, M. Li, S.F. Yu “Robust and flexible random lasers using perovskite quantum dots coated nickel foam for speckle-free laser imaging”, Small, 17, 2103065 (2021)

• J. Yu#, M. Sharma#, M. Li#, S. Delikanli, A. Sharma, M. Taimoor, Y. Altintas, J. R. McBride, T. Kusserow, T. C. Sum, H. V. Demir,  C. Dang “Low‐threshold lasing from copper‐doped CdSe colloidal quantum wells”, Laser Photonics Rev., 2100034 (2021)

• Q. Wei, J. Yin, O. M. Bakr, Z, Wang, C. Wang, O. F. Mohammed*, M. Li*, G. Xing* “Effect of Zinc‐doping on the Reduction of the Hot‐carrier Cooling Rate in Halide Perovskites”, Angew. Chem. Int. Ed., 60, 10957 (2021)

• Y. Li, Q. Wu, Y. Chen, R. Zhang, C. Li, K. Zhang, M. Li, Y. Lin, D. Wang, X. Zou, T. Xie, "Interface engineering Z-scheme Ti-Fe2O3/In2O3 photoanode for highly efficient photoelectrochemical water splitting", Appl. Catal. B., 290, 120058 (2021)

• J. Fu, M. Li, A. Solanki, Q. Xu, Y. Lekina, S. Ramesh, Z. X. Shen, T. C. Sum “Electronic States Modulation by Coherent Optical Phonons in 2D Halide Perovskites”, Adv. Mater.,  2006233 (2021)

2020

• J. Guo, T. Liu, M. Li*, C. Liang, K. Wang, G. Hong, G. Long, S-F. Yu, T-W. Lee, W. Huang, G. Xing*, "Ultrashort Laser Pulse Doubling by Metal-Halide Perovskite Multiple Quantum Wells", Nat. Commun., 11, 3361 (2020)

• N. Taghipour, S. Delikanli, S. Shendre, M. Sak, M. Li, F. Isik, I. Tanriover, B. Guzelturk, T. C. Sum, “Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling”, Nat. Commun., 11, 3305 (2020)

• T. Wang, B. Liu, Y. Lin, Q. Yang, W. Gao, M. Li, J. Qiu, X. Yu, X. Xu, SF Yu, "Ultraviolet C lasing at 263 nm from Ba2LaF7:Yb3+, Tm3+ upconversion nanocrystal microcavities", Opt. Lett., 45, 5986 (2020)

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Prior to PolyU

• J. Yu, S. Shendre, W-k Koh, B. Liu, M. Li, S. Hou, C. Hettiarachchi, S. Delikanli, P. Martínez, M. D. Birowosuto, T. C. Sum, H. V. Demir, C. Dang, “Electrically control amplified spontaneous emission in colloidal quantum dots”, Science Advance, 5, eaav3140 (2019)

• J. Qing, C. Kuang, H. Wang, Y. Wang, X‐K. Liu, S. Bai, M. Li, T. C. Sum, Z. Hu, W. Zhang, F. Gao, “High‐Quality Ruddlesden–Popper Perovskite Films Based on In Situ Formed Organic Spacer Cations”, Advanced Materials, 31, 1904243 (2019)

• Z. Hong, W. K. Chong, A. Y. R. Ng, M. Li, R. Ganguly, T. C. Sum, H. S. Soo, “Hydrophobic Metal Halide Perovskites for Visible- Light Driven, Photoredox Carbon-Carbon Bond Cleavage and Dehydrogenation Catalysis”, Angewandte Chemie, 58, 3456 (2019)

• J. Fu, N.F. Jamaludin, B. Wu, M. Li, A. Solanki, Y.F. Ng, S. Mhaisalkar, C.H.A. Huan, T.C. Sum, "Localized Traps Limited Recombination in Lead Bromide Perovskites" Advanced Energy Materials, 9, 1803119 (2019)

• R. Begum, X.Y. Chin, M. Li, B. Damodaran, T.C. Sum, S. Mhaisalkar, N. Mathews, "Stable Sn2+doped FAPbI3 nanocrystals for near- infrared LEDs", Chemical Communications, 55, 5451 (2019)

• Q. Zhang, A. Solanki, K. Parida, D. Giovanni, M. Li, T. Jansen, M. S. Pshenichnikov, T. C. Sum, "Tunable Ferroelectricity in Ruddlesden-Popper Halide Perovskites", ACS applied materials & interfaces, 11, 13523 (2019)

• S. Shendre, S. Delikanli, M. Li, D. Dede, Z. Pan, S. T. Ha, Y. H. Fu, P. L. Hernández-Martínez, J. Yu, O. Erdem, A. I. Kuznetsov, C. Dang, T. C. Sum, H. V. Demir, "Ultrahigh-efficiency aqueous flat nanocrystals of CdSe/CdS@Cd1−xZnxS colloidal core/crown@alloyed-shell quantum wells", Nanoscale, 11, 301 (2019)

• M. Li, R. Begum, J. Fu, Q. Xu, K. T. Ming, S. A Veldhuis, M. Grätzel, N. Mathews, S. Mhaisalkar, and T. C. Sum, “Low Threshold and Efficient Multiple Exciton Generation in Perovskite Nanocrystals”, Nature Communications, 9, 4197(2018)

• M. Li, J. Fu, Q. Xu, and T. C. Sum, “Slow Hot Carrier Cooling in Halide Perovskites: Prospects for Hot-Carrier Solar Cells”, Advanced Materials,1802486 (2018)

• M. Li, Q. Wei, S. K. Muduli, N. Yantara, Q. Xu, N. Mathews, S. G. Mhaisalkar, G. Xing, T. C. Sum, “Enhanced Exciton and Photon Confinement in Ruddlesden-Popper Perovskite Microplatelets for Highly Stable Low-Threshold Polarized Lasing”, Advanced Materials, 30, 1707235 (2018)

• J. Qing#, X-K. Liu#, M. Li#, F. Liu, Z. Yuan, E. Tiukalova, M. Duchamp, S. Chen, Y. Wang, S. Bai, H. J. Snaith, C. S. Lee, T. C. Sum, F. Gao, “Aligned and Graded Type-II Ruddlesden-Popper Perovskite Films for Efficient Solar Cells”, Advanced Energy Materials, 1800185 (2018) (#equal contribution) (ESI highly cited paper)

• W. Qi#, M. Li#, Z. Zhang, J. Guo, G. Xing, T. C Sum, W. Huang. "Efficient Recycling of Trapped Energies for Dual-emission in Mn-doped Perovskite Nanocrystals" Nano Energy, 51, 704 (2018) (#equal contribution)

• Y. Gao#, M. Li#, S. Delikanli, H. Zheng, B. Liu, C. Dang, T. C. Sum, H. V. Demir, “Low-threshold lasing from colloidal CdSe/CdSeTe core/alloyed-crown type-II heteronanoplatelets” Nanoscale, 10, 9466 (2018) (#equal contribution)

•  Saikat Bhaumik, S. A. Veldhuis, S. K. Muduli, M. Li, R. Begum, T. C. Sum, S. Mhaisalkar, N. Mathews, “Inducing isotropic growth in multidimensional cesium lead halide perovskite nanocrystals” ChemSusChem, 6, 514 (2018)

• N. F. Jamaludin, N. Yantara, Y. F. Ng, M. Li, T. W. Goh, K. Thirumal, T. C. Sum, N. Mathews, C. Soci, S. Mhaisalkar, “Grain Size Modulation and Interfacial Engineering of CH3NH3PbBr3 Emitter Films through Incorporation of Tetraethylammonium Bromide”, ChemPhysChem, 19, 1075, (2018)

• M. Li, S. Bhaumik, T. W. Goh, M. S. Kumar, N. Yantara, M. Grätzel, S. Mhaisalkar, N. Mathews, T. C. Sum “Slow Cooling and Highly Efficient Extraction of Hot Carriers in Colloidal Perovskite Nanocrystals”, Nature Communications, 8, 14350 (2017) (“Tiny particles pack a lot of power” news reported by Straits Times, Singapore, 02/2017, www.straitstimes.com) (ESI highly cited paper)

• G. Xing, B. Wu, X. Wu, M. Li, B. Du, Q. Wei, J. Guo, E. Yeow, W. Huang, T. C. Sum, “Transcending the Slow Bimolecular Recombination in Lead-Halide Perovskites for Electroluminescence”, Nature Communications, 8, 14558 (2017) (ESI highly cited paper)

• S. A. Veldhuis, P. P. Boix, N. Yantara, M. Li, T. C. Sum, N. Mathews, S. G. Mhaisalkar, “Perovskite Materials for Light‐Emitting Diodes and Lasers” Advanced Materials, 28, 6804 (2016) (ESI highly cited paper)

• S. A Kulkarni, S. Muduli, G. Xing, N. Yantara, M. Li, S. Chen, T. C. Sum, N. Mathews, T. J. White, S. G. Mhaisalkar, “Modulating  Excitonic Recombination Effects through One‐Step Synthesis of Perovskite Nanoparticles for Light‐Emitting Diodes”, ChemSusChem, 10, 3818 (2017)

• S. Gupta, WY. Wu, S. Chakrabortty, M. Li, Y. Wang, X. Ong, Y. Chan, “Hierarchical Multicomponent Nanoheterostructures via Facet-to-Facet Attachment of Anisotropic Semiconductor Nanoparticles”, Chemistry of Materials, 29, 9075 (2017)

• Q. Wei, B. Du, B. Wu, J. Guo, M. Li, J. Fu, Z. Zhang, J. Yu, T. Hou, G. Xing, T. C. Sum, W. Huang, “Two-Photon Optical Properties in Individual Organic-Inorganic Perovskite Microplates” Advanced Optical Materials, 5, 1700809 (2017)

• S. Veldhuis, Y. K. E. Tay, A. Bruno, S. Dintakurti, S. Bhaumik, S. K. Muduli, M. Li, N. Mathews, T. C. Sum, Subodh G Mhaisalkar, “Benzyl Alcohol-Treated CH3NH3PbBr3 Nanocrystals Exhibiting High Luminescence, Stability, and Ultralow Amplified Spontaneous Emission Thresholds” Nano Letters, 17, 7424 (2017)

• N. Zhang, M. Li, C. F. Tan, P. K. N. Connor, T. C. Sum, G. W. Ho, “Plasmonic enhanced photoelectrochemical and photocatalytic performances of 1D coaxial Ag@Ag2S hybrids”, Journal of Materials Chemistry A, 5, 21570 (2017)

• Y. F. Ng, N. F. Jamaludin, N. Yantara, M. Li, V. K. R. Irukuvarjula, H. V. Demir, T. C. Sum, S. Mhaisalkar, N. Mathews, “Rapid Crystallization of All-Inorganic CsPbBr3 Perovskite for High-Brightness Light-Emitting Diodes”, ACS Omega, 2, 2757 (2017)

• S. Bhaumik, S. A. Veldhuis, Y. F. Ng, M. Li, S. K. Muduli, T. C. Sum, B. Damodaran, S. Mhaisalkar, N. Mathews, “Highly stable, luminescent core–shell type methylammonium–octylammonium lead bromide layered perovskite nanoparticles” Chemical Communications, 52, 7118 (2016)

• A. Perumal, S. Shendre, M. Li, Y. K. E. Tay, V. K. Sharma, S. Chen, Z. Wei, Q. Liu, Y. Gao, P. J.  Buenconsejo, S. T. Tan, C. L. Gan, Q. Xiong, T. C. Sum, H. V. Demir, “High brightness formamidinium lead bromide perovskite nanocrystal light emitting devices”, Scientific Reports, 6, 36733 (2016)

• M. Li, M. Zhi, H. Zhu, W-Y Wu, Q-H Xu, M. H. Jhon, Y. Chan, “Ultralow-threshold multiphoton pumped lasing from colloidal nanoplatelets in solution”, Nature Communications, 6, 8513 (2015) (“A semiconductor nanoparticle liquid laser” highlighted by http://www.science.nus.edu.sg/research-highlights, 23/06/2016)

• W-Y Wu#, M. Li#, J. Lian, X. Wu, E. K. L. Yeow, M. H. Jhon, Y. Chan, "Efficient color-tunable multiexcitonic dual wavelength emission from Type II semiconductor tetrapods" ACS Nano, 8, 9349 (2014) (#equal contribution)

• JI. Wong, N. Mishra, G. Xing, M. Li, S. Chakrabortty, T. C. Sum, Y. Shi, Y. Chan, H. Y. Yang, "Dual wavelength electroluminescence from CdSe/CdS tetrapods", ACS Nano 8, 2873 (2014)

• D. Wang, P. Kanhere, M. Li, Q. Tay, Y. Tang, Y. Huang, T. C. Sum, N. Mathews, T. Sritharan, Z. Chen, “Improving Photocatalytic H2 Evolution of TiO2 via Formation of {001}–{010} Quasi-Heterojunctions”, Journal of Physical Chemistry C, 117, 22894, (2013)

• M. Li, G. Xing, G. Xing, B. Wu, T. Wu, X. Zhang, T. C. Sum, “Origin of the green emission and the charge trapping dynamics in ZnO nanowires”, Physical Review B, 87, 115309 (2013)

• M. Li, B. Wu, S. A. Ekahana, M.I.B. Utama, G. Xing, Q. Xiong, T. C. Sum, X. Zhang, “Size and Surface Effects on Transient Photoconductivity in CdS Nanobelts probed by Time-Resolved Terahertz Spectroscopy”, Applied Physics Letters, 101, 091104 (2012)

• M. Li, G. Xing, L. Qune, G. Xing, T. Wu, C. Huan, X. Zhang, T.C. Sum, “Tailoring the Charge Carrier Dynamics in ZnO Nanowires: the role of surface hole/electron traps”, Physical Chemistry Chemical Physics, 14, 3075 (2012)

• G. Xing, G. Xing, M. Li, E. J. Sie, D. Wang, A. Sulistio, Q. Ye, C. H. A. Huan, T. Wu, T. C. Sum, “Charge transfer dynamics in Cu-doped ZnO nanowires”, Applied Physics Letters, 98, 102105 (2011)