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12% solar conversion efficiency by interphase restructuring

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.95148· OSTI ID:6858244
Solar energy conversion efficiency of n-CuInSe/sub 2//p-CuISe/sub 3/ heterojunction formed in situ and contacted by I/sup -/-I/sub 2/-Cu/sup +/-HI electrolyte has been increased to 12% by modifying the growth conditions of the p-CuISe/sub 3/ phase. These include the use of prepolished n-CuInSe/sub 2/ (110) surfaces, higher concentrations of HI and Cu/sup +/, and an air anneal at 200 /sup 0/C. X-ray fluorescence analysis in conjunction with scanning electron micrographs of the new interphase indicates structural and compositional alterations and possibly further transformation of CuISe/sub 3/ to CuIn/sub 2/Se/sub 3/I. Temperature dependence of the cell performance indicates solid state effects and relative independence of electrochemical kinetics.
Research Organization:
Hanh--Meitner-Institut fuer Kernforschung Berlin, Bereich Strahlenchemie, Postbox, D-1000 Berlin 39, Federal Republic of Germany
OSTI ID:
6858244
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 45:2; ISSN APPLA
Country of Publication:
United States
Language:
English