Kelley, David - University of California, Merced

研究领域

Professor Kelley's research group uses ultrafast optical spectroscopy to examine the optical and electronic properties of semiconductor nanoparticles. He focuses on layered semiconductors — specifically gallium selenide and indium selenide — which have layered crystal structures and form two-dimensional, disk-like nanoparticles. The optical properties of indium selenide are very well suited for the absorption of sunlight; therefore, its nanoparticles hold considerable promise as the active media in photovoltaics. Professor Kelley's group synthesizes nanoparticles that have diameters from 2 nm to tens of nanometers — all of which are four atoms thick — as the properties of such nanoparticles are strongly size dependent, due to quantum size effects. He is primarily interested controlling and optimizing the properties of the nanoparticles for solar energy conversion.

近期论文

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Ke Gong, David F. Kelley and Anne Myers Kelley “Nonuniform Excitonic Charge Distribution Enhances Exciton-Phonon Coupling in ZnSe/CdSe Alloyed Quantum Dots”, J. Phys. Chem. Lett., 8, 626 (2017). Ke Gong, David F. Kelley, and Anne Myers Kelley, “Resonance Raman spectroscopy and electron-phonon coupling in zinc selenide quantum dots”, J Phys. Chem. C, 120, 29533 (2016). Youhong Zeng and David F. Kelley, “Excited Hole Photochemistry of CdSe/CdS Quantum Dots” J. Phys. Chem. C, 120, 17853 (2016). Gary A. Beane, Ke Gong and David F. Kelley, “Auger and Carrier Trapping Dynamics in Core/Shell Quantum Dots Having Sharp and Alloyed Interfaces” ACS Nano, 10, 3755 (2016). Ke Gong, Gary Beane and David F. Kelley, “Strain Relaxation in Metastable CdSe/CdS Quantum Dots”, Chemical Physics, 471, 18 (2016). Youhong Zeng and David F. Kelley, “Two-Photon Photochemistry of CdSe Quantum Dots”, J. Phys. Chem. C, 117, 20268 (2015). Chen Lin, Ke Gong, David F. Kelley, and Anne Myers Kelley, “Electron–Phonon Coupling in CdSe/CdS Core/Shell Quantum Dots” , ACS Nano, 9, 8131 (2015). Chen Lin, Ke Gong, David F. Kelley, and Anne Myers Kelley, “Size-Dependent Exciton-Phonon Coupling in CdSe Nanocrystals through Resonance Raman Excitation Profile Analysis” , J. Phys. Chem. C, 119, 7491 (2015). Ke Gong and David F. Kelley, “Surface Charging and Trion Dynamics in CdSe-based Core/Shell Quantum Dots”, J. Phys. Chem. C,119, 9637 (2015). Ke Gong and David F. Kelley, “Lattice Strain Limit for Uniform Shell Deposition in Zincblende CdSe/CdS Quantum Dots”, J. Phys. Chem. Lett, 6, 1559 (2015). Ke Gong and David F. Kelley, “A Predictive Model of Shell Morphology in CdSe/CdS Core/Shell Quantum Dots”, J. Chem. Phys., 141, 194704 (2014). Chen Lin, David F. Kelley, Mikaela Rico, and Anne Myers Kelley, “The “surface optical” phonon in CdSe nanocrystals”, ACS Nano, 8, 3928 – 3938 (2014).