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Radiation tolerance of GaAs1-xSbx solar cells

Afshari, H; Durant, BK; Thrasher, T; Abshire, L; Whiteside, VR; Chan, S; Kim, D; ... Sellers, IR; + view all (2021) Radiation tolerance of GaAs1-xSbx solar cells. Solar Energy Materials and Solar Cells , 233 , Article 111352. 10.1016/j.solmat.2021.111352. Green open access

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High radiation tolerance of GaAs1-xSbx based solar cells is demonstrated for the low-intensity-low-temperature (LILT) conditions of the target planets Saturn, Jupiter, and Mars. The GaAs1-xSbx-based cells are irradiated with high energy electrons to assess the effect of harsh radiation environment on the solar cell and the response of the cell is then investigated in terms of its photovoltaic operation. This system shows significant radiation resistance to the high energy electron environment for the conditions of the planets of interest. An unusual increase of the short circuit current after irradiation is observed at low temperature, which is supported by a simultaneous increase in the external quantum efficiency of the cell under the same conditions. The open circuit voltage and fill factor of the cell are especially tolerant to irradiation, which is also reflected in unchanged dark current-voltage characteristics of the solar cell upon irradiation particularly at LILT.

Type: Article
Title: Radiation tolerance of GaAs1-xSbx solar cells
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.solmat.2021.111352
Publisher version: http://dx.doi.org/10.1016/j.solmat.2021.111352
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Space power, LILT, GaAsSb, Radiation tolerance, Solar cells, Space application
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10139977
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