| Description |
1 online resource ([17] p.) : col. ill. |
| Series |
NREL/CP ; 5200-54188 |
|
Conference paper (National Renewable Energy Laboratory (U.S.)) ; 5200-54188.
|
| Note |
Title from title screen (viewed Jan. 30, 2013). |
|
"October 2012." |
|
"Presented at SPIE Optics + Photonics, San Diego, California, August 12-16, 2012." |
| Summary |
We investigated the protective effectiveness of some transparent metal oxides (TMO) on CIGS solar cell coupons against damp heat (DH) exposure at 85oC and 85% relative humidity (RH). Sputter-deposited bilayer ZnO (BZO) with up to 0.5-um Al-doped ZnO (AZO) layer and 0.2-um bilayer InZnO were used as 'inherent' part of device structure on CdS/CIGS/Mo/SLG. Sputter-deposited 0.2-um ZnSnO and atomic layer deposited (ALD) 0.1-um Al2O3 were used as overcoat on typical BZO/CdS/CIGS/Mo/SLG solar cells. The results were all negative -- all TMO-coated CIGS cells exhibited substantial degradation in DH. Combining the optical photographs, PL and EL imaging, SEM surface micro-morphology, coupled with XRD, I-V and QE measurements, the causes of the device degradations are attributed to hydrolytic corrosion, flaking, micro-cracking, and delamination induced by the DH moisture. Mechanical stress and decrease in crystallinity (grain size effect) could be additional degrading factors for thicker AZO grown on CdS/CIGS. |
| Bibliography |
Includes bibliographical references (p. 13-15). |
| Funding |
Sponsored by National Renewable Energy Laboratory contract no. DE-AC36-08GO28308 |
| Subject |
Solar cells -- Research.
|
|
Metallic oxides -- Research.
|
|
Protective coatings -- Research.
|
| Added Author |
Pern, F. J. (Fu-Jann), 1952-
|
|
National Renewable Energy Laboratory (U.S.)
|
|
SPIE Optics and Photonics Conference (2012 : San Diego, Calif.)
|
| Gpo Item No. |
0430-P-04 (online) |
| Sudoc No. |
E 9.17:NREL/CP-5200-54188 |
|
