Interface formation in CdTe solar cells: Nucleation of CdTe on CdS(0001) and (10$ bar 1 $0) |
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Authors: | Bastian Siepchen Andreas Klein Wolfram Jaegermann |
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Affiliation: | Institute of Materials Science, Technische Universit?t Darmstadt, Petersenstra?e 23, 64287 Darmstadt, Germany |
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Abstract: | The growth of CdTe on (0001) and (10 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) |
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Keywords: | 61.05.jh 68.35.bg 68.35.Ct 68.55.ag 79.60.Dp 81.05.Dz |
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