Nanoparticle precursor route to low-temperature spray deposition of CdTe thin films
- National Renewable Energy Laboratory, Colorado 80401-3393 (United States)
In this letter we report a nanoparticle-derived route to CdTe thin films. CdTe nanoparticles 39{plus_minus}8 A in diameter, prepared by an organometallic route, were characterized by x-ray diffraction, UV-Vis spectroscopy, transmission electron microscopy, and energy dispersive x-ray spectroscopy. CdTe thin-film deposition was realized by spraying a nanoparticle/butanol colloid onto SnO{sub 2}-coated glass substrates at variable susceptor temperatures. The resultant CdTe films were characterized by atomic force microscopy, x-ray diffraction, and UV-Vis spectroscopy. Smooth and dense CdTe thin films were obtained using growth temperatures {similar_to}200 {degree}C less than conventional spray pyrolysis. A growth temperature dependence upon CdTe grain size formation and crystallinity was observed by atomic force microscopy and x-ray diffraction. UV-Vis characterization revealed a transformation in the optical properties of the CdTe thin films as a function of growth temperature. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- OSTI ID:
- 240459
- Journal Information:
- Applied Physics Letters, Vol. 67, Issue 15; Other Information: PBD: 9 Oct 1995
- Country of Publication:
- United States
- Language:
- English
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