Abstract
Purpose: The purpose of this study was to evaluate electrical and structural degradation of flexible CIGS sollar cell exposed to high temperature and humid atmosphere.
Method: Accelerated degradation was performed for various time under 85℃/85%RH and then electrical and structural properties were analyzed by 4-point probe method, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD).
Results: Sheet resistance of the top ITO layer increased with exposure time to the high temperature and humid atmosphere. Blunting of the protrusion morphology of ITO layer was observed for the degraded specimen, while no phase change was detected by XRD. Oxygen was detected at the edge area after 300 hours of exposure.
Conclusion: Increase in electrical resistance of the degraded CIGS solar cell under high temperature and humid environment was attribute to the oxygen or water absorption.
Method: Accelerated degradation was performed for various time under 85℃/85%RH and then electrical and structural properties were analyzed by 4-point probe method, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD).
Results: Sheet resistance of the top ITO layer increased with exposure time to the high temperature and humid atmosphere. Blunting of the protrusion morphology of ITO layer was observed for the degraded specimen, while no phase change was detected by XRD. Oxygen was detected at the edge area after 300 hours of exposure.
Conclusion: Increase in electrical resistance of the degraded CIGS solar cell under high temperature and humid environment was attribute to the oxygen or water absorption.
| Translated title of the contribution | Evaluation of Failure Mechanism of Flexible CIGS Solar Cell Exposed to High Temperature and Humid Atmosphere |
|---|---|
| Original language | Korean |
| Pages (from-to) | 41-47 |
| Number of pages | 7 |
| Journal | 신뢰성 응용연구 |
| Volume | 16 |
| Issue number | 1 |
| State | Published - Mar 2016 |