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Stability of Silicon Heterojunction Solar Cells Having Hydrogen Plasma Treated Intrinsic Layer

Conference ·

The open-circuit voltage of Silicon Heterojunction (HJ) cells can be improved by using extrinsic hydrogen plasma treatment (HPT) to reduce the trap states (NT) which we have verified using Deep Level Transient Spectroscopy (DLTS). However, hydrogen has been associated with long-term degradation. We have investigated the stability of HJ cells with and without HPT using accelerated degradation (1-sun illumination, 90 degrees C temperature, argon ambient for 1000 hours). The stability has been studied using DLTS, current-voltage, and Suns-Voc. Our results show HPT cells are stable and maintain their higher Voc and lower NT after accelerated degradation.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S), Sunshot Program; University of Delaware Dissertation Fellowship
DOE Contract Number:
AC36-08GO28308
OSTI ID:
1913964
Report Number(s):
NREL/CP-5K00-85067; MainId:85840; UUID:ff345d7d-b149-4f25-bf31-dfd4b9188f6e; MainAdminID:68512
Resource Relation:
Conference: Presented at the 2022 IEEE 49th Photovoltaics Specialists Conference (PVSC), 5-10 June 2022, Philadelphia, Pennsylvania
Country of Publication:
United States
Language:
English

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