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Title: Properties of Cd and Zn Partial Electrolyte Treated CIGS Solar Cells: Preprint

We study the influence of Cd partial baths on the photovoltaic properties of CuInGaSe2 (CIGS) and CuIn-GaSSe2 (CIGSS) thin film absorbers. We find that efficient solar cells can be fabricated by this treatment, and we compare their properties with those containing CdS window layers grown by chemical bath deposition. The results suggest that Cd plays a dominant role in establishing efficient photovoltaic junctions in CuInSe2 alloys. Micron scale photoluminescence scans show non-uniformity along the length probed. Cd treatment quenches one of the luminescence transitions, which indicates a change in shallow acceptor level density. We present a model that helps to explain the evolution of photovoltaic action.
Authors:
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Publication Date:
OSTI Identifier:
15006978
Report Number(s):
NREL/CP-520-31475
TRN: US200412%%547
DOE Contract Number:
AC36-99-GO10337
Resource Type:
Conference
Resource Relation:
Conference: Conference title not supplied, Conference location not supplied, Conference dates not supplied; Other Information: PBD: 1 May 2002; Related Information: Prepared for the 29th IEEE PV Specialists Conference, 20-24 May
Research Org:
National Renewable Energy Lab., Golden, CO (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; ALLOYS; DEPOSITION; ELECTROLYTES; ENERGY-LEVEL DENSITY; LUMINESCENCE; PHOTOLUMINESCENCE; SOLAR CELLS; THIN FILMS; WINDOWS; SOLAR ENERGY PV; CUIN-GASSE2 (CIGSS); CUINGASE2 (CIGS); THIN FILM ABSORBERS; PHOTOLUMINESCENCE; CHEMICAL BATH DEPOSITION (CBD); CURRENT-VOLTAGE; ELECTROLYTE; N-TYPE DOPING; INVERSION; COMPOSITIONAL GRADING; INTERFACE PASSIVATION; SOLAR ENERGY - PHOTOVOLTAICS