5% efficient evaporated solid-phase crystallised polycrystalline silicon thin-film solar cells - Swinburne Research Bank : Open Access Repository

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Title: 5% efficient evaporated solid-phase crystallised polycrystalline silicon thin-film solar cells
Author(s): Kunz, O.; Ouyang, Z.; Varlamov, S.; Aberle, A. G.
Abstract: The first energy conversion efficiencies of over 5% are reported for evaporated solid-phase crystallised (SPC) polycrystalline silicon thin-film solar cells. All cells have a size of 2 cm2 and are formed on planar glass superstrates. Back surface reflectance is provided by a simple coating with commercial white paint. The best cells have short-circuit current densities of about 19 mA/cm2 and external quantum efficiencies peaking at above 80%. The diffusion length in the base of the solar cells is larger than the base thickness, providing significant room for further efficiency improvements via an increased thickness of the base layer. Additional improvements are expected via the use of textured glass sheets, boosting the light trapping capabilities of the cells.
Publication Type: Journal article
Source: Progress in Photovoltaics: Research and Applications, Vol. 17, no. 8 (Dec 2009), pp. 567-573
Publication Year: 2009
FOR Code(s): 0204 Condensed Matter Physics; 0912 Materials Engineering; 0999 Other Engineering
Keyword(s): Diffusion length; Energy conversion efficiency; Polycrystalline silicon; Quantum efficiency; Solid phase crystallisation; Thin-film solar cells
Publisher: John Wiley & Sons
Publisher URL: http://dx.doi.org/10.1002/pip.908
ISSN: 1099-159X
Peer Reviewed