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Graduate Student Seminar - 10/24/2014

"Characterization of Solar Cells with Nanoscale Resolution"

by Elizabeth Tennyson

Friday, October 24, 2014 -- 12:00 p.m.
Large Conference Room, 1207 Energy Research Facility

Advisor:  Assistant Professor Marina Leite

For photovoltaics, the VOC dictates the power conversion efficiency, which is an indirect measurement of charge carrier recombination within the material. Identifying and spatially resolving where the recombination processes occur within micron-structured photovoltaics is crucial to the design of next generation solar cells. We present a novel imaging tool that resolves the VOC of optoelectronic devices with nanoscale resolution based on illuminated Kelvin probe force microscopy. To demonstrate the versatility of our new measurement technique, we applied this method to different solar cell materials, including polycrystalline devices for lightweight, low-cost and high-efficiency photovoltaics.

For additional information about the IREAP Graduate Student Seminars, contact Joe Garrett, David Somers or Joe Murray.

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