9 April 2019
Design Considerations for High-Efficiency CdTe Solar Cells
Presented By Professor James Sites, Colorado State University
- 1.00 - 2.00 pm
- DAV 1.109, Sir David Davies Building
About this event
Several design modifications to the traditional thin-film CdTe solar cell have been successful at Colorado State University and others are currently under study. Those that are now routinely incorporated include the use of a MgZnO buffer layer at the front of the cell, a thin Te layer at the rear, and a bilayer absorber consisting of CdSeTe at the front and CdTe behind. Work in progress includes electron reflection with a CdMgTe layer at the back of the absorber and As doping of the CdTe. The talk will present experimental data in the context of the band-diagram features that are assumed responsible for the design modifications.
Prof James Sites studies the device physics of low-cost CdTe and CIGS thin-film solar cells. He received his PhD from Cornell in 1969 and has been on the Colorado State faculty since 1971. His photovoltaics lab makes precision electrical and optical measurements on solar cells fabricated at Colorado State and by several partners in the U.S. and abroad. The goals of his laboratory are to separate the various solar-cell losses, to explain the losses on a fundamental basis, to make numerical simulations when appropriate, and to suggest strategies for improved solar-cell performance.