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Graduate Student Seminar - 12/12/2014

"Advanced Broadband Antireflection Coatings Based on Cellulose Micro-Fiber Paper"

by Dongheon Ha

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

Advisor:  Assistant Professor Jeremy Munday

In order to absorb a significant fraction of the incident sunlight, a solar cell must incorporate light management techniques, including high quality antireflection coatings. Such coatings are typically produced via high temperature deposition methods that are costly. Here we present a new technique based on light scattering within a thin transparent paper that is placed on top of a solar cell. The optical and electronic response of GaAs solar cells are tested with these coatings, and a broadband angle-insensitive response is achieved. An overall efficiency improvement of 24% is found from current-voltage measurements on a GaAs solar cell. The process is simple, inexpensive, and the paper coatings are made from a recyclable material, leading to less environmental impact.

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

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