Nanoparticle Precursor Route to Low-Temperature Spray Deposition of CdTe Thin Films

Martin Pehnt, Douglas L. Schulz, Calvin J. Curtis, Kim M. Jones, David S. Ginley

Research output: Contribution to journalArticlepeer-review

49 Scopus Citations


In this letter we report a nanoparticle-derived route to CdTe thin films. CdTe nanoparticles 39±8 Å 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.

Original languageAmerican English
Pages (from-to)2176
Number of pages1
JournalApplied Physics Letters
Issue number15
StatePublished - 1995

NREL Publication Number

  • NREL/JA-20594


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