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Title: Evaluation of photovoltaic materials within the Cu-Sn-S family

Next-generation thin film solar cell technologies require earth abundant photovoltaic absorber materials. Here we demonstrate an alternative approach to design of such materials, evaluating candidates grouped by constituent elements rather than underlying crystal structures. As an example, we evaluate thermodynamic stability, electrical transport, electronic structure, optical and defect properties of Cu-Sn-S candidates using complementary theory and experiment. We conclude that Cu{sub 2}SnS{sub 3} avoids many issues associated with the properties of Cu{sub 4}SnS{sub 4}, Cu{sub 4}Sn{sub 7}S{sub 16}, and other Cu-Sn-S materials. This example demonstrates how this element-specific approach quickly identifies potential problems with less promising candidates and helps focusing on the more promising solar cell absorbers.
Authors:
; ; ; ; ;  [1] ; ;  [1] ;  [2]
  1. National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22253718
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 25; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; CRYSTAL STRUCTURE; DESIGN; ELECTRONIC STRUCTURE; MATERIALS; PHOTOVOLTAIC EFFECT; SOLAR CELLS; THIN FILMS