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Sulfur gradient-driven Se diffusion at the CdS/CuIn(S,Se){sub 2} solar cell interface

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.3425666· OSTI ID:21347418
;  [1];  [2]; ;  [2]; ;  [3]; ; ;  [4];  [1]
  1. Experimentelle Physik II, Universitaet Wuerzburg, Am Hubland, D-97074 Wuerzburg (Germany)
  2. Department of Chemistry, University of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, Nevada 89154-4003 (United States)
  3. AVANCIS GmbH and Co. KG, Otto-Hahn-Ring 6, 81739 Muenchen (Germany)
  4. National Renewable Energy Laboratory (NREL), 1617 Cole Boulevard, Golden, Colorado 80401 (United States)
+ Show Author Affiliations

The diffusion behavior of Se at the CdS/Cu(In,Ga)(S,Se){sub 2} thin film solar cell interface was investigated by x-ray photoelectron spectroscopy and x-ray excited Auger electron spectroscopy. Buffer/absorber structures with S/Se ratios between zero and three at the initial Cu(In,Ga)(S,Se){sub 2} surface were analyzed. Samples from a high-efficiency laboratory process (NREL) as well as from an industrial large-area process (AVANCIS) were investigated. We find selenium diffusion into the CdS buffer layer, the magnitude of which strongly depends on the S content at the absorber surface. The associated modification of the heterojunction partners has significant impact on the electronic structure at the interface.

OSTI ID:
21347418
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 18 Vol. 96; ISSN APPLAB; ISSN 0003-6951
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
AUGER ELECTRON SPECTROSCOPY
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER SELENIDES
COPPER SULFIDES
DIFFUSION
DIRECT ENERGY CONVERTERS
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
EQUIPMENT
FILMS
GALLIUM COMPOUNDS
GALLIUM SELENIDES
GALLIUM SULFIDES
HETEROJUNCTIONS
INDIUM COMPOUNDS
INDIUM SELENIDES
INDIUM SULFIDES
INORGANIC PHOSPHORS
LAYERS
MATERIALS
NONMETALS
PHOSPHORS
PHOTOELECTRIC CELLS
PHOTOELECTRON SPECTROSCOPY
PHOTOVOLTAIC CELLS
SELENIDES
SELENIUM
SELENIUM COMPOUNDS
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR MATERIALS
SEMIMETALS
SOLAR CELLS
SOLAR EQUIPMENT
SPECTROSCOPY
SULFIDES
SULFUR
SULFUR COMPOUNDS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
X-RAY PHOTOELECTRON SPECTROSCOPY