Huang, Libai - Purdue University - Department of Chemistry

个人简介

Education B.S., Peking University, Beijing, China, 2001 Ph.D., University of Rochester, 2006 Awards Career Award, 2016 Kavli Fellow, Kavli Foundation and National Academy of Sciences, 2011 Young Investigator Award, Photosynthesis Gordon Research Conference, 2008 Hooker Graduate Fellowship, University of Rochester, 2005 DeRight Graduate Fellowship, University of Rochester , 2004 Lattimore Graduate Fellowship, University of Rochester, 2003

研究领域

Spatial and temporal imaging of energy and charge transport in solar energy conversion systems - We employ ultrafast spectroscopy combined with optical microscopy and scanning probe microscopy to achieve simultaneous ultrafast time resolution and nanometer spatial resolution. This research program aims at providing spatial maps of carrier dynamics, and allowing for imaging energy and charge propagation in space directly. This is an exciting new frontier that combines advanced imaging and dynamics techniques to address fundamental questions regarding energy flow in individual nanostructures, organic materials, solar cells, and photosynthetic systems. Direct imaging of exciton and charge transport in solar cell active layers We have recently developed ultrafast microscopy as a novel means to directly visualize exciton and charge transport with ~ 200 fs temporal resolution and ~ 50 nm spatial resolution in perovskite and organic solar cells. Recently, our group has visualized charge transport directly in perovskite solar cells. With innovative approaches that combine spatial and temporal resolutions, we revealed a new singlet-mediated triplet transport mechanism in certain singlet fission materials, which leads to favorable long-range triplet exciton diffusion for solar cell applications. Probing charge and exciton dynamics at the individual nanostructure level Our group has pioneered the use of optical pump-probe techniques for imaging ultrafast charge and exciton dynamics at the individual nanostructure level to resolve energy relaxation pathways that are not accessible by traditional ensemble methods. We have spatially resolved carrier dynamics in graphene, individual single-walled carbon nanotubes, and two-dimensional semiconductors such as MoS 2 to elucidate the role of the environment in modulating relaxation pathways.

近期论文

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Zhi Guo, Doyun Lee, Joseph Strzalka, Haifeng Gao,Libai Huang, Ali M. Khounsarye and Tengfei Luo, Thermal conductivity of organic bulk heterojunction solar cells: an unusual binary mixing effect, Physical Chemistry Chemical Physics, in press, 2014. Yan Wan, Anna Stradomska, Sarah Fong, Zhi Guo, Richard D. Schaller, Gary P. Wiederrecht, Jasper Knoester*, and Libai Huang*, Exciton Level Structure and Dynamics in Tubular Porphyrin Aggregates, Journal of Physical Chemistry C, 118, 24854 (2014). Zhi Guo, Doyun Lee, Rich D. Schaller, Xiaobing Zuo,TengFei Luo, Haifeng Gao, and Libai Huang*, Relationship between Interchain Interaction, Exciton Delocalization, and Charge Separation in Low-bandgap Copolymer Blends, Journal of the American Chemical Society, 136, 10024 (2014). Zhi Guo, Doyun Lee, Yi Liu, Fangyuan Sun, Haifeng Gao, Peter C. Burns, Libai Huang, and Tengfei Luo, Tuning the Thermal Conductivity of Solar Cell Polymers through Side Chain Engineering, Physical Chemistry Chemical Physics, 16, 7764, (2014). Bo Gao, Greg Hartland, and Libai Huang*, Transient Absorption Spectroscopy of Excitons in an Individual Suspended Metallic Carbon Nanotube, Journal of Physical Chemistry Letters, 4, 3050, (2013). Shun Lo, Hongyan Shi, Libai Huang, Greg Hartland, Imaging the extent of plasmon excitation in Au nanowires using pump-probe microscopyOptics Letters, 38, 1265, 2013. Hongyan Shi, Rusen Yan, Simone Bertolazzi, Bo Gao, Andras Kis, Debdeep Jena, Huili (Grace) Xing, and Libai Huang*, Exciton Dynamics in Suspended Monolayer and Few-Layer MoS2 2D Crystals, ACS Nano, 7, 1072–1080 (2013). Hongwei Geng, Caleb M. Hill, Shilei Zhu, Daniel A. Clayton, Haiying Liu, Libai Huang, Shanlin Pan, Photoelectrochemical Properties and Interfacial Charge Transfer Kinetics of BODIPY-sensitized TiO2 electrode, RSC Adv., 3, 2306-2312, 2013. Hongwei Geng, Caleb M. Hill, Daniel A. Clayton, Shanlin Pan and Libai Huang, Interfacial Charge Transfer Dynamics of Poly (3-hexylthiophene-2, 5-diyl) (P3HT)-Monodisperse TiO2 Nanoparticle Thin Film,Phys. Chem. Chem. Phys., 15, 3504-3509, 2013. Libai Huang* and Ji-Xin Cheng*, Nonlinear Optical Microscopy of Single Nanostructures, Invited Review, Annual Review of Materials Research, in press, 2013. Sean Murphy, Libai Huang, and Prahsant Kamat, How Graphene-Silver Nanoparticle Composite Assists in SERS Enhancement, Journal of Physical Chemistry C,117, 4740–4747, 2013. Sean Murphy and Libai Huang*, Transient Absorption Microscopy Studies of Energy Relaxation in Graphene Oxide Thin Film, Journal of Physics: Condensed Matters, 25, 144203, 2013. Lisa J. Nogaj, Libai Huang and Todd D. Krauss, Semiconductor Carbon Nanotube Optics, in Handbook of Carbon Nano Materials (Editors: Francis D'Souza and Karl M. Kadish), World Scientific Series on Carbon Nanoscience. (Book Chapter) Bo Gao, Gregory V. Hartland, and Libai Huang*,Transient Absorption Microscopy Studies of Individual Chirality Assigned Single-Walled Carbon Nanotubes, ACS Nano, 6, 5083 (2012). DOI nn300753a. link to article Shun Shang Lo, Todd A. Major, Nattasamon Petchsang, Libai Huang, Masaru K. Kuno, and Gregory V. Hartland Charge Carrier Trapping and Acoustic Phonon Modes in Single CdTe Nanowires, ACS Nano, , 6, 5274 (2012). DOI nn3010526. link to article Chris Wong, Shun S. Lo, and Libai Huang*,Ultrafast Spatial Imaging of Charge Dynamics in Heterogeneous Polymer Blends, Journal of Physical Chemistry Letters, 3, 879 (2012). link to article Libai Huang*, Nina Ponomarenko, Gary P. Wiederrecht, David M. Tiede*, Cofactor-specific Photochemical Function Resolved by Ultrafast Spectroscopy in Photosynthetic Reaction Center Crystals, PNAS, 109, 4851( 2012). link to article Sean Murphy, Libai Huang*, and Prashant Kamat*, Charge-Transfer Complexation and Excited State Interactions in Porphyrin-Silver Nanoparticle Hybrid Nanostructures, Journal of Physical Chemistry C, 115 22761(2011).link to article Bo Gao, Gregory Hartland, Tian Fang, Michelle Kelly, Debdeep Jena, Huili (Grace) Xing, and Libai Huang*, Studies of Intrinsic Hot Phonon Dynamics in Suspended Graphene by Transient Absorption Microscopy, Nano Lett. 11 3184 (2011).link to article Iltai Kim, Shana L. Bender, Jasmina Hranisavljevic, Lisa M. Utschig, Libai Huang, Gary P. Wiederrecht, and David M. Tiede, Metal Nanoparticle Plasmon-Enhanced Light-Harvesting in a Photosystem I Thin Film, Nano Lett. 11, 3091 (2011) link to article