Presentation Details
| Separation of Light and Bias Modification to CdTe Solar Cells Megh N.Khanal, Priya S.Suryavanshi, Katherine Zaunbrecher, Lilly Quintana-Barrera, James Sites. Department of Physics, Colorado State University, Fort Collins, CO, USA |
Abstract
Cadmium telluride (CdTe) solar cells exhibit metastable changes under combinations of heat, light, and bias stress. In this study, CdTe cells were subjected to controlled temperature stress at 70 0C under light or dark conditions, either with bias near Voc or with zero bias. Under light, devices stressed near Voc showed significant improvement in Voc and fill factor, while devices held at zero bias showed only minor changes. Under stress in the dark, devices held near Voc also exhibited significant enhancement, whereas zero-biased cells showed no improvement. Carrier concentration also increased with stress time under bias near Voc with either light or dark, suggesting electrical bias can play a significant role in performance enhancement of CdTe solar cells.
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.