Nanoparticle precursor route to low‐temperature spray deposition of CdTe thin films
作者:
Martin Pehnt,
Douglas L. Schulz,
Calvin J. Curtis,
Kim M. Jones,
David S. Ginley,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 67,
issue 15
页码: 2176-2178
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.115094
出版商: AIP
数据来源: AIP
摘要:
In this letter we report a nanoparticle‐derived route to CdTe thin films. CdTe nanoparticles 39±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 SnO2‐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 ∼200 °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. ©1995 American Institute of Physics.
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