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Title: Epitaxial growth of CZT(S,Se) on silicon

Techniques for epitaxial growth of CZT(S,Se) materials on Si are provided. In one aspect, a method of forming an epitaxial kesterite material is provided which includes the steps of: selecting a Si substrate based on a crystallographic orientation of the Si substrate; forming an epitaxial oxide interlayer on the Si substrate to enhance wettability of the epitaxial kesterite material on the Si substrate, wherein the epitaxial oxide interlayer is formed from a material that is lattice-matched to Si; and forming the epitaxial kesterite material on a side of the epitaxial oxide interlayer opposite the Si substrate, wherein the epitaxial kesterite material includes Cu, Zn, Sn, and at least one of S and Se, and wherein a crystallographic orientation of the epitaxial kesterite material is based on the crystallographic orientation of the Si substrate. A method of forming an epitaxial kesterite-based photovoltaic device and an epitaxial kesterite-based device are also provided.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1243034
Assignee:
International Business Machines Corporation (Armonk, NY) DOEEE
Patent Number(s):
9,287,426
Application Number:
14/499,788
Contract Number:
EE0006334
Resource Relation:
Patent File Date: 2014 Sep 29
Research Org:
International Business Machines Corporation, Armonk, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 14 SOLAR ENERGY

Other works cited in this record:

The path towards a high-performance solution-processed kesterite solar cell
journal, June 2011
  • Mitzi, David B.; Gunawan, Oki; Todorov, Teodor K.
  • Solar Energy Materials and Solar Cells, Vol. 95, Issue 6, p. 1421-1436
  • DOI: 10.1016/j.solmat.2010.11.028

Growth of Cu2ZnSnS4 thin films on Si (100) substrates by multisource evaporation
journal, December 2008
  • Oishi, Koichiro; Saito, Genki; Ebina, Kiyoshi
  • Thin Solid Films, Vol. 517, Issue 4, p. 1449-1452
  • DOI: 10.1016/j.tsf.2008.09.056

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