Front contact to the GaSb-photovoltaic converter: Properties and thermal stability
Sorokina S.V. 1, . Soldatenkov F. Yu. 1, Potapovich N. S. 1, Khvostikov V.P. 1
1Ioffe Institute, St. Petersburg, Russia
Email: svsorokina@mail.ioffe.ru, f.soldatenkov@mail.ioffe.ru, nspotapovich@mail.ioffe.ru, vlkhv@scell.ioffe.rssi.ru

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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 50oC) and standard conditions as well as at the forced thermal degradation (at 125 and 200oC). 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, Voc, 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.
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