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.
- Research Organization:
- National Renewable Energy Lab., Golden, CO. (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC36-99-GO10337
- OSTI ID:
- 15007054
- Report Number(s):
- NREL/CP-520-32254; TRN: US200413%%103
- 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
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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
SECONDARY ION MASS SPECTROMETRY
ANTIREFLECTIVE COATINGS
SOLAR ENERGY - PHOTOVOLTAICS