Presentation Details
| Characterization of Thin-Film CdTe Photovoltaic Modules: Spatial Defects and Stabilization Kinetics Dana B.Kern1, Steve Johnston1, Kent Terwilliger1, Max Liggett2, Kristopher O.Davis2, Greg Horner3. 1National Laboratory of the Rockies, Golden, CO, USA.2University of Central Florida, Orlando, FL, USA.3Tau Science, Cornelius, OR, USA |
Abstract
We investigate characterization methods and defects in commercial CdTe photovoltaic modules that were removed from a field installation. We use luminescence imaging to show spatial defects, but we note high defect tolerance of CdTe module technology resulting in only small performance losses. We further demonstrate under-performance for modules that are stored in the dark, and we discuss wake-up procedures that are necessary to ensure lab characterization of field-relevant performance. Finally, we show that wake-up kinetics can vary depending on module vintage or field history.
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.
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.