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Interface formation in CdTe solar cells: Nucleation of CdTe on CdS(0001) and (10 $ \bar 1 $ 0)
Author(s) -
Siepchen Bastian,
Klein Andreas,
Jaegermann Wolfram
Publication year - 2008
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200802120
Subject(s) - cadmium telluride photovoltaics , nucleation , crystallite , x ray photoelectron spectroscopy , materials science , bar (unit) , crystallography , chemistry , chemical engineering , nanotechnology , physics , organic chemistry , meteorology , engineering
Abstract The growth of CdTe on (0001) and (10 $ \bar 1 $ 0) surfaces of CdS was studied using low energy electron diffraction and photoelectron spectroscopy. The results indicate oriented growth of the CdTe films with a faster nucleation of CdTe on CdS(0001), explaining the preferred (111) orientation of CdTe films on polycrystalline substrates. The faster nucleation on the (0001) surface is attributed to the formation of a stable CdS(0001):Te surface termination, which is identified from surface sensitive Te 4d spectra and a 2√3 × 2√3 surface reconstruction. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)