Quan, Lina - virginia tech - Department of Chemistry

个人简介

Education and Research Experiences 2018-2020 Postdoc. U of California, Berkeley (w/ Prof. Yang) 2016-2017 Postdoc. U of Toronto (w/ Prof. Sargent) 2014-2016 Visiting doctoral student. U of Toronto (w/ Prof. Sargent) 2011-2016 PhD. Ewha Womans University (w/ Prof. Kim)

研究领域

Research Overview Our research focuses on the optical and electronic properties of emerging semiconductor such as perovskites, to control the absorption or emission of light and/or manipulate the transport and recombination of energised charge carriers in these materials. We employ a number of cutting edge characterization techniques (ultrafast lasers, synchrotron x-ray) to study the photophysics of materials and devices with high spatial and temporal resolutions. Our work finds a number of applications including light harvesting (photovoltaics, photo- and X-Ray- detectors) and light emission (LEDs, lasers) devices. Materials Synthesis and Charcterization We develop and synthesise new semiconductor materials, and characterise them using a modern toolbox of materials chemistry: X-Ray and electron diffraction, solid-state NMR, electron microscopy and optical spectroscopies. A particularly unique aspect is the development of multimodal techniques to interrelate a series of different measurements to provide connections between the materials, chemical, physical, optical, morphological and structural properties – where possible on the same local scan area. Recent work has focused on pushing new nano-structured emitters further into the blue spectral region, and molecular modulation/passivation protocols for different bandgap bulk halide perovskites to increase their performance and long-term device stability. Spectroscopy A precise understanding of the physical principles governing the structural and electronic dynamics in electronic materials is necessary to generate insights that are subsequently fed to the development of next generation energy efficient devices. We investigate the interaction of light with matter, using light absorption or photoluminescence (PL) techniques to access key information about optoelectronic properties in materials and devices. To better inform synthetic efforts, and understand the critical roles of heterogeneity, interfaces, and disorder, we investigate the materials using various excitation sources such as ultrafast lasers. We perform a number of techniques including time-resolved photoluminescence and transient absorption across a range of time scales relevant to carrier recombination and device operation. Optoelectronic Devices Materials with highly crystalline lattice structures and low defect concentrations have classically been considered essential for high-performance optoelectronic devices. However, the emergence of high-efficiency devices based on emerging hybrid semiconductors is provoking researchers to rethink this traditional picture, as the heterogeneity in several properties within these materials occurs on a series of length scales. In materials typically fabricated crudely through simple processing techniques, there are large local fluctuations in defect density and lattice structure that appear from short to long length scales (<100 nm to >10 µm). We covers a range of inexpensive devices which convert incident photons into other forms of energy. This includes efficient photovoltaics, as well as photo-detectors.

近期论文

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Large Exchange-Driven Intrinsic Circular Dichroism of A Chiral 2D Hybrid Perovskite S. Li, X. Xu, C. Kocoj, C. Zhou, Y. Li, D. Chen, J. Bennett, S. Liu, L. Quan, M. Liu, D. Qiu, P. Guo, submitted. Broadband Achromatic Quarter-Waveplate using 2D Hybrid Copper Halide Single Crystal Y. Dou, M. S. Tumusange, J. Jin, X. Wang, E. Crater , S. Liu, L. Zhu, S. Zuberi, G. Harman, C. Weaver, B. Ramanujam, A. Shan, R. Moore, N. J. Podraza, Y. Yan, L. Quan* J. Am. Chem. Soc 2023, https://doi.org/10.1021/jacs.3c05705 Steric Effects in Ruddlesden-Popper Blue Perovskites for High Quantum EfficiencyI. Lee, O. Allam, J. Kim, Y. Dou, H. Ahn, A. Proppe, Y. Dong, D. Ma, L. Quan*, E. Sargent*, S. S. Jang*, D. H. Kim* Adv. Opt. Mat. 2023, 11, 2201824. (* co-corresponding author) Octahedral Distortion and Excitonic Behavior of Cs3Bi2Br9 Halide Perovskite at Low TemperatureJ. Jin*, L. Quan*, M. Gao, C. Chen, P. Guo, and P. Yang J. of Phys. Chem. C 2023, 127, 7, 3523. (* co-first author) H. Tan, L. N. Quan, M. Saliba, “Photonics for enhanced perovskite optoelectronics” Nanophotonics 2021, 10, 8 (guest editor) X. Zhuo*, L. N. Quan*, Q. Dong*, “Horizons Community Board collection: optical and photonic materials”, Nanoscale Horizons 2021, 6 (12), 936-938. M. C Folgueras, J. Jin, M. Gao, L. N. Quan, J. A Steele, S.Srivastava, M. B Ross, R. Zhang, F. Seeler, K. Schierle-Arndt, M. Asta, P. Yang, “Lattice Dynamics and Optoelectronic Properties of Vacancy-Ordered Double Perovskite Cs2TeX6 (X = Cl–, Br–, I–) Single Crystals“, J of Phys. Chem.C 2021, https://doi.org/10.1021/acs.jpcc.1c08332 A. Dey…L. N. Quan, et.al, “State of the art and prospects of halide perovskite nanocrystals”, ACS Nano 2021, 15, 7, 10775. L. N. Quan, Y. Park, P. Guo, M. Gao, J. Jin, J. Huang, J. Copper, A. Schwartzberg, R. Schaller, D. Limmer, P. Yang, “Vibrational relaxation dynamics in layered perovskite quantum wells”, Proc. Natl. Acad. Sci. U. S. A 2021, 118, 25, e2104425118. J. Jin, M. C. Folgueras, M. Gao, S. Yu, S. Louisia, Y. Zhang, L. N. Quan, C. Chen, R. Zhang, F. Seeler, K. Schierle-Arndt, P. Yang,“A New Perspective and Design Principle for Halide Perovskites: Ionic Octahedron Network (ION)”, Nano Lett. 2021, 21, 5415. Z. Lin, Y. Zhang, M. Gao, J. Steele, S. Louisia, S. Yu, L. N. Quan, C-K. Lin, D. T. Limmer, P. Yang, “Kinetics of moisture-induced phase transformation in inorganic halide perovskite”, Matter 2021, doi: 10.1016/j.matt.2021.04.023. A. Bibi, I. Lee, Y. Nah, O.Allam, H. Kim, L. N. Quan, J. Tang, A. Walsh, S. S. Jang, E. H. Sargent, D. H. Kim, “Lead-free halide double perovskites: Toward stable and sustainable optoelectronic devices”, Materials Today 2021, doi: 10.1016/j.mattod.2020.11.026. J. Huang, T.Lei, M. Siron, Y. Zhang, S. Yu, F. Seeler, A. Dehestani, L. N. Quan, K. S. Arndt, P. Yang, “Lead-free cesium europium halide perovskite nanocrystals”, Nano Lett. 2020, 20, 3734-3739. L. Gao*, L. N. Quan*, F. P. G. Arquer, Y. Zhao, R. Munir, A. Proppe, R. Bermudez, C. Zou, Z. Yang, M. I. Saidaminov, O. Voznyy, S. Kinge, Z. Lu, S. O. Kelley, A. Amassian, J. Tang, E. H. Sargent, “Quantum-Dot-in-Layered-Perovskite Enable Efficient Infrared Light-Emitting Diodes”, Nat. Photon. 2020, 14, 227. L. N. Quan*, D. Ma*, Y. B. Zhao*, O. Voznyy, H. Yuan, E. Bladt, J. Pan, F. P. G. Arquer, R. Sabatini, Z. Piontkowski, A. Emwas, P. Todorovic, R. Q. Bermudez, G. Walters, J. Z. Fan, Y. Li, D. H. Anjum, N. Wei, D. W. McCamant, M. B. J. Roeffaers, S. Bals, J. Hofkens, O. M. Bakr, Z. Lu, E. H. Sargent, “Edge Stabilization in Reduced-Dimensional Perovskites”, Nat. Commun. 2020, 11, 1, 1. H. Chen, J. Lin, J. Kang, Q. Kong, D. Lu, J. Kang, M. Lai, L. N. Quan, Z. Lin, J. Jin, L.Wang, M. F. Toney, P. D. Yang, “Single crystalline ruddlesden-popper phase halide perovskites for pure-blue light-emitting diodes”, Sci. Adv. 2020, 6, eaay4045. L. N. Quan*, J. Kang*, C. Ning, P. D. Yang, “Nanowires for photonics”, Chem. Rev. 2019, 119, 9153-9169. L. N. Quan, B. P. Rand, R. H. Friend, S. G. Mhaisalkar, T. W. Lee, E. H. Sargent, “Nextgeneration perovskite optical sources”, Chem. Rev. 2019, 119, 12, 7444. J. Lin, H. Chen, Y. Gao, Y. Cai, J. Jin, A. Etman, J. Kang, T. Lei, Z. Lin, M. Folgueras, L. N .Quan, Q. Kong, M. Sherburne, M. Asta, J. Sun, M. Toney, J. Wu, P. D. Yang, “Pressure induced semiconductor to metal phase transition of a charge-ordered indium halide perovskite”, Proc. Natl. Acad. Sci. U. S. A 2019, 116, 23404-23409. H. Kwon, J. Lim, J. Han, L. N. Quan, D. Kim, E. Shin, E. Kim, D. Kim, I. Chung, Y. Noh, D. H. Kim, “Towards efficient and stable perovskite solar cells employing non-hygroscopic F4-TCNQ doped TFB as hole-transporting material”, Nanoscale 2019, Doi: 10.1039/C9NR05719F Y. Zhang, D. Lu, M. Gao, M. Lai, J. Lin, T. Lei, Z. Lin, L. N. Quan, P. D. Yang, “Quantitative imaging of anion exchange kinetics in halide perovskites”, Proc. Natl. Acad. Sci. U. S. A 2019, 116, 12648-12653. J. Lin, H. Chen, J. Kang, L. N. Quan, Z. Lin, Q. Kong, M. Lai, S. Yu, L. Wang, L. Wang, M. F Toney, P. D. Yang, “Copper (I)-based highly emissive all-inorganic rare-earth halide clusters”, Matter 2019, 1, 180-191. Z. Yang, M. Wei, O.Voznyy, P.Todorovic, M. Liu, R. Bermudez, P. Chen, J. Fan, A. Proppe, L. N. Quan, G. Walters, H. Tan, J. Chang, U. Jeng, S. Kelley, E. H. Sargent, “Anchored ligands facilitate efficient B-site doping in metal halide perovskites” J. Am. Chem. Soc. 2019, 141, 8296-8305 A. Proppe, M. Elkins, O. Voznyy, R. Pensack, F. Zapata, L. Besteiro, L. N. Quan, R. Bermudez, P. Todorovic, S. Kelley, A. Govorov, S. Gray, I. Infante, E. H. Sargent, G. Scholes, “Spectrally resolved ultrafast exciton transfer in mixed perovskite quantum wells”, J. Phys. Chem. L. 2019, 10, 419-426 J. Lim, H. Wang, C. Choi, L. N. Quan, K. Chung, W. Park, Y. Noh, D. H. Kim “Polyethylenimine ethoxylated interlayer-mediated ZnO interfacial engineering for highperformance and low-temperature processed flexible perovskite solar cells: A simple and viable route for one-step processed CH3NH3PbI3”, J. Power Sources 2019, 438, 226956. J. Lim, H. Wang, C. Choi, H. Kwon, L. N. Quan, W. Park, Y. Noh, D. H. Kim, “Self-powered reduced-dimensionality perovskite photodiodes with controlled crystalline phase and improved stability”, Nano Energy 2019, 57, 761-770. M. Wei, F. P. G. Arquer, G. Walters, Z. Yang, L. N. Quan, Y. Kim, R. Sabatini, R. Q. B, L. Gao, J. Fan, F. Fan, A G. Parker, M. F. Toney, E. H. Sargent, “Ultrafast narrowband exciton routers enable low-loss luminescent solar concentrators”, Nat. Energy 2019, 4, 197. S. Baek, O. Ouellette, J. Jo, J. Choi, K. Seo, J. Kim, B. Sun, S. Lee, M. Choi, D. Nam, L. N. Quan, J. Kang, S. Hoogland, F. Arquer, J. Lee, E. H. Sargent, “Infrared cavity-enhanced colloidal quantum dot photovoltaics employing asymmetric multilayer electrodes”, ACS Energy Lett. 2019, 3, 2908-2913. K. Lin, J. Xing, L. N. Quan, F. P. G. Arquer, X. Gong, J. Lu, L. Xie, W. Zhao, D. Zhang, C. Yan, W. Li, X. Liu, Y. Lu, J. Kirman, E. H. Sargent, Q. Xiong, Z. Wei, “Perovskite lightemitting diodes with external quantum efficiency exceeding 20%”, Nature 2018, 562, 245. J. Xing, Y. Zhao, M. Askerka, L. N. Quan, X. Gong, W. Zhao, J. Zhao, H. Tan, G. Long, L. Gao, Z. Yang, O. Voznyy, J. Tang, Z. Lu, Q. Xiong, E. H. Sargent, “Color-stable highly luminescent sky-blue perovskite light-emitting diodes”, Nat. Commun. 2018, 9, 3541. F. P. G. Arquer, O. Bushuyev, P. D. Luna, C. Dinh, A. Seifitokaldani, M. I. Saidaminov, C. Tan, L. N. Quan, A. Proppe, M. G. Kibria, S. Kelley, D. Sinton, E. H. Sargent, “2D metal oxyhalide–derived catalysts for efficient CO2electroreduction”, Adv. Mat. 2018, 30, 1802858. G. Long, C. Jiang, R. Sabatini, Z. Yang, M. Wei, L. N. Quan, Q. Liang, A. Rasmita, M. Askerka, G. Walters, X. Gong, J. Xing, X. Wen, R. Q. Bermudez, H. Yuan, G. Xing, X. R.Wang, D. Song, O. Voznyy, M. Zhang, S. Hoogland, W. Gao, Q. Xiong, E. H. Sargent, “Spin control in reduced-dimensional chiral perovskites”, Nat. Photon. 2018, 12, 528. J. Xu, O. Voznyy, M. Liu, A. Kirmani, G. Walters, R. Munir, M. Abdelsamie, A. Proppe, A. Sarkar, F P. G. Arquer, M. Wei, B. Sun, M. Liu, O. Ouellette, R. Q. Bermudez, J. Li, J. Fan, L. N. Quan, P. Todorovic, H. Tan, S. Hoogland, S. Kelley, M. Stefik, A. Amassian, E. H. Sargent, “2D matrix engineering for homogeneous quantum dot coupling in photovoltaic solids”, Nat. Nanotechnol. 2018, 13, 456. Y. Zhao, H. Tan, H. Yuan, Z. Yang, J. Fan, J. Kim, O. Voznyy, X. Gong, L. N. Quan, C. Tan, J. Hofkens, D. Yu, Q. Zhao, E. H. Sargent, “Perovskite seeding growth of formamidiniumlead-iodide-based perovskites for efficient and stable solar cells” Nat. Commun. 2018, 9, 1607. X. Li, Y. B. Zhao, F. Fan, L. Levina, M. Liu, R. Q. Bermudez, X. Gong, L. N. Quan, J. Fan, Z. Yang, S. Hoogland, O. Voznyy, Z. H. Lu, E. H. Sargent, “Bright colloidal quantum dot light-emitting diodes enabled by efficient chlorination”, Nat. Photon. 2018, 12, 159. F. Yan, J. Xing, G. Xing, L. N. Quan, S. T. Tan, J. Zhao, R. Su, L. Zhang, S. Chen, Y. Zhao, A. Huan, E. H. Sargent, Q. Xiong, H. V. Demir, “Highly efficient visible colloidal lead-halide perovskite nanocrystal light-emitting diodes”, Nano Lett. 2018, 18, 3157. J. Kim, M. Saidaminov, H. Tan, Y. Zhao, Y. Kim, J. Choi, J. W. Jo, J. Fan, R. Q. Bermudez, Z. Yang, L. N. Quan, M. Wei, O. Voznyy, E. H. Sargent, “Amide‐catalyzed phase‐selective crystallization reduces defect density in wide‐bandgap perovskites”, Adv. Mater. 2018, 30, 1706275. L. N. Quan, F. P. G. Arquer, R. Sabatini, E. H. Sargent, “Perovskites for light emission”, Adv. Mater. 2018, 1801996. Y. B. Zhao, G. L Ingram, X. W. Gong, X. Y. Li, L. N. Quan, P. C. Li, J. Q. Xie, E. H. Sargent, Z.‐H. Lu, “Excitonic creation of highly luminescent defects in situ in working organic lightemitting diodes”, Adv. Opt. Mat. 2018, 6, 1700856. H. Wang, J. Won Lim, L. N. Quan, K. Chung, Y. J. Jang, Y. Ma, D. H. Kim, “Perovskite– gold nanorod hybrid photodetector with high responsivity and low driving voltage”, Adv. Opt. Mat. 2018, 6, 1701397.