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Title: Chalcogen back surface field layer

Kesterite photovoltaic devices having a back surface field layer are provided. In one aspect, a method of forming a photovoltaic device includes: forming a complete photovoltaic device having a substrate, an electrically conductive layer on the substrate, an absorber layer on the electrically conductive layer, a buffer layer on the absorber layer, and a transparent front contact on the buffer layer; removing the substrate and the electrically conductive layer from the complete photovoltaic device to expose a backside surface of the absorber layer; forming a passivating layer on the backside surface of the absorber layer; and forming a high work function back contact on the passivating layer. A photovoltaic device having a passivating layer is also provided.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1461496
Assignee:
International Business Machines Corporation (Armonk, NY) DOEEE
Patent Number(s):
10,014,423
Application Number:
15/281,789
Contract Number:
EE0006334
Resource Relation:
Patent File Date: 2016 Sep 30
Research Org:
International Business Machines Corporation, Armonk, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English

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