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Title: Electronic structure and photovoltaic application of BiI{sub 3}

Rapid recent improvement in photovoltaic efficiency in hybrid lead halide perovskite materials has provided the impetus for understanding other, related main-group halide systems. Here, we show that the closely related but less toxic bismuth iodide BiI{sub 3} can show promising optoelectronic properties. Layered binary BiI{sub 3} is used here as the active layer in planar solar cell architectures (efficiency approximately 0.3%). Experimental and computational studies of absolute band positions of BiI{sub 3} are also presented, to help in the rational design of device architectures that would allow efficient charge transfer at the interfaces.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [2] ; ; ;  [1] ;  [2] ;  [3] ;  [1] ;  [2] ;  [1] ;  [2] ;  [2] ;
  1. Mitsubishi Chemical Center for Advanced Materials, University of California, Santa Barbara, California 93106 (United States)
  2. (United States)
  3. Materials Research Laboratory, University of California, Santa Barbara, California 93106 (United States)
Publication Date:
OSTI Identifier:
22482158
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; BISMUTH IODIDES; ELECTRONIC STRUCTURE; LEAD HALIDES; MATERIALS; PEROVSKITE; PHOTOVOLTAIC EFFECT; SOLAR CELLS; TOXICITY