Characterization of MOCVD Thin-Film CdTe Photovoltaics on Space-Qualified Cover Glass

• Published in: IEEE journal of photovoltaics Vol. 6; no. 2; pp. 557 - 561
• Main Authors: Lamb, Daniel Ash, Irvine, Stuart James C., Clayton, Andrew James, Kartopu, Giray, Barrioz, Vincent, Hodgson, Simon David, Baker, Mark A., Grilli, Rossana, Hall, James, Underwood, Craig I., Kimber, Richard
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.03.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cadmium compounds; Cadmium telluride (CdTe); Glass; II-VI semiconductor materials; metal-organic chemical vapor deposition (MOCVD); MOCVD; photovoltaic (PV) cells; Photovoltaic systems; Space vehicles; transparent conductive oxide (TCO); metal–organic chemical vapor deposition (MOCVD); transparent conductive oxide (TCO); Cadmium telluride (CdTe); photovoltaic (PV) cells
• ISSN: 2156-3381; 2156-3403
• DOI: 10.1109/JPHOTOV.2016.2520199

This paper details the AM0 conversion efficiency of a metal-organic chemical vapor phase deposition thin-film cadmium telluride (CdTe) solar cell deposited onto a cerium-doped cover glass (100 μm). An AM0 best cell conversion efficiency of 12.4% (0.25-cm 2 contact area) is reported. An AM0 mean efficiency of 12.1% over eight cells demonstrated good spatial uniformity. Excellent adhesion of the cell structure to the cover glass was observed with an adhesive strength of 38 MPa being measured before cohesive failure of the test adhesive. The device structure on cover glass was also subject to severe thermal shock cycling of +80 °C to -196 °C, showing no signs of delamination and no deterioration of the photovoltaic (PV) performance.