Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

Photoluminescence properties of a-Si:H based thin films and corresponding solar cells

Pincik, E. and Kobayashi, H. and Gleskova, H. and Kucera, M. and Ortega, L. and Jergel, M. and Falcony, C. and Brunner, R. and Shimizu, T. and Nadazdy, V. and Zeman, M. and Mikula, M. and Kumeda, M. and van Swaaij, R. A. C. M. M. (2003) Photoluminescence properties of a-Si:H based thin films and corresponding solar cells. Thin Solid Films, 433 (1-2). pp. 344-351. ISSN 0040-6090

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Amorphous hydrogenated silicon (a-Si:H) is a well-known semiconductor with metastable properties. Direct surface exposure, as it occurs e.g. in rf plasma equipments, introduces damage due to the charged particle bombardment. The paper deals with photoluminiscence properties of virgin, oxide layer covered and chemically treated (in KCN solutions) surfaces of a-Si:H and correspondingsolarcell structures. The cyanide treatment improves the electrical characteristics of MOS structures as well as solarcells. X-ray diffraction at grazing incidence and reflectance spectroscopy complete the study. The photoluminescence measurements were performed at liquid helium temperatures at 6 K using an Ar laser and lock-in signal recording device containing the PbS and Ge photodetectors. Photoluminescence bands were observed as broad luminescent peaks between 1.05–1.7 eV. Two new peaks were detected at 1.38 and 1.42 eV. The evolution of the band at ∼1.2 eV related to microcrystalline silicon is investigated. The fitting and simulation of photoluminiscence spectra are presented. The surface luminescent properties of a-Si:H based structures (double layers, single thinfilmsolarcells) before and after the passivation are compared with those of very thin oxide layers and chemically treated surfaces.