InGaAsP Radiation Hardness and Post Irradiation Regeneration Behavior

Autor: Birte-Julia Godejohann, David Lackner, Bruno Boizot, Jeremie Lefevre, R. Lang, Jonas Schön, Frank Dimroth
Rok vydání: 2020
Předmět:
Zdroj: 2020 47th IEEE Photovoltaic Specialists Conference (PVSC).
DOI: 10.1109/pvsc45281.2020.9300639
Popis: As an answer to increased demand for more radiation tolerant solar cells for space applications, we investigate the dependence of radiation hardness of III-V compounds on composition of InGaAsP. Four solar cells with different composition were grown on InP and metamorphically on GaAs and irradiated with 1 MeV electrons. A simulation-based analysis was used to determine the material specific irradiation damage. In addition, the regeneration ability is investigated under typical operating conditions (60 °C and AM0 illumination) and under the ECSS standard. While a clear decrease in radiation damage compared to GaAs is observed in all samples, the effect is stronger with increasing InP-fraction. The irradiation induced defect recombination coefficient can be described with a linear function of InP-fraction.
Databáze: OpenAIRE