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Title: Effect of Mo Back Contact on Na Out-Diffusion and Device Performance of Mo/Cu(In,Ga)Se2/CdS/ZnO Solar Cells: Preprint

This conference paper describes the molybdenum thin films that were deposited on soda lime glass (SLG) substrates using direct-current planar magnetron sputtering, with a sputtering power density of 1.2 W/cm2. The working gas (Ar) pressure was varied from 0.6 to 16 mtorr to induce changes in the Mo films' morphology and microstructure. Thin films of Cu(In,Ga)Se2 (CIGS) were deposited on the Mo-coated glass using the 3-stage co-evaporation process. The morphology of both the Mo-coated SLG and the CIGS thin films grown on it was examined using high-resolution scanning electron microscopy. Na was depth profiled in the Mo and CIGS films by secondary ion mass spectrometry. The device performance was evaluated under standard conditions of 1000 W/m2 and 25 C. Optimum device performance is found for an intermediate Mo sputtering pressure.
Authors:
; ; ; ; ; ;
Publication Date:
OSTI Identifier:
15007054
Report Number(s):
NREL/CP-520-32254
TRN: US200413%%103
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; DIRECT CURRENT; MAGNETRONS; MASS SPECTROSCOPY; MICROSTRUCTURE; MOLYBDENUM; MORPHOLOGY; POWER DENSITY; SCANNING ELECTRON MICROSCOPY; SOLAR CELLS; SPUTTERING; SUBSTRATES; THIN FILMS; SOLAR ENERGY; ANTIREFLECTION COATINGS PV; MOLYBDENUM THIN FILMS; SODA LIME GLASS (SLG); DIRECT-CURRENT PLANAR MAGNETRON SPUTTERING; SCANNING ELECTRON MICROSCOPY; SECONDARY ION MASS SPECTROMETRY; ANTIREFLECTIVE COATINGS; SOLAR ENERGY - PHOTOVOLTAICS