Semiconductor physics

Front contact to the GaSb-photovoltaic converter: Properties and thermal stability

S. V. Sorokina, F. Yu. Soldatenkov, N. S. Potapovich, V. P. Khvostikov

Ioffe Institute, St. Petersburg, Russia

Abstract: Issues related to the thermal stability of front contacts, based on Cr–Au and Cr–Au–Ag–Au, to GaSb-based photovoltaic cells have been considered at the operational (the cell temperature is 50$^\circ$C) and standard conditions as well as at the forced thermal degradation (at 125 and 200$^\circ$C). It is shown that the photovoltaic converter with the silver-containing contact is preferable in terms of the stability of contact resistivity, external quantum yield, $FF$, $V_{oc}$, and therefore, the cell efficiency and service life. The durability of the cells is determined at operational and elevated temperatures.

Keywords: contact, degradation, photovoltaic converter, GaSb.

Received: 16.05.2022
Revised: 12.07.2022
Accepted: 10.08.2022

DOI: 10.21883/FTP.2023.01.54928.3692

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