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David F. Kelley

Title: 
Professor
Phone: 
(209) 228-4354
Office: 
S&E 1 Bldg., RM 324
Location: 
S&E 1 Bldg., RM 361
Education: 
  • Ph.D., 1980 — University of Washington, Seattle
  • B.S., 1976 — Whitworth College
Research Interests: 

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.