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Photoluminescence, structural and electrical properties of passivated a-Si:H based thin films and corresponding solar cells

Pincik, E. and Kobayashi, H. and Takahashi, M. and Fujiwara, N. and Brunner, R. and Gleskova, H. and Jergel, M. and Mullerova, J. and Kucera, M. and Falcony, C. and Ortega, L. and Rusnak, J. and Mikula, M. and Zahoran, M. and Jurani, R. and Kral, M. (2004) Photoluminescence, structural and electrical properties of passivated a-Si:H based thin films and corresponding solar cells. Applied Surface Science, 235 (3). pp. 351-363. ISSN 0169-4332

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Abstract

This paper deals with the photoluminescence, structural and electricalproperties of chemically passivated a-Si:H basedthinfilms and correspondingthinfilmsolarcells. The structures were chemically passivated in three types of KCN and HCN solutions containing MeOH and/or with water. The photoluminescence measurements were performed at 6 K using Ar laser and lock-in signal recording device containing Ge and Si photodetectors. Optically determined band gap related photoluminescence signals were observed between 1.1 and 1.7 eV. The electricalproperties were measured by a high-sensitive charge version of deep level transient spectroscopy (Q-DLTS). The evolution of three basic groups of defects was observed. The structural studies were realized by the standard X-ray diffraction analysis. The cyanide treatment improved significantly the electrical characteristics of both corresponding MOS structures and solarcells due to the passivation of some parts of the dangling bonds by CN group. Particularly, the passivation of the defects at interfaces in MOS or solarcell multilayer structures was achieved which is of primary practical importance.

Item type: Article
ID code: 38700
Keywords: amorphous silicon, solar cells, thin films, photoluminescence , Electrical engineering. Electronics Nuclear engineering, Surfaces, Coatings and Films
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 26 Mar 2012 15:17
    Last modified: 04 Sep 2014 21:48
    URI: http://strathprints.strath.ac.uk/id/eprint/38700

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