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Lightweight and low-cost thin film photovoltaics for large area extra-terrestrial applications

Lamb, DA, Irvine, SJC, Clayton, AJ, Barrioz, V, Kartopu, G, Baker, MA, Underwood, CI, Grilli, R, Kimber, R and Hall, J (2015) Lightweight and low-cost thin film photovoltaics for large area extra-terrestrial applications IET Renewable Power Generation, 9 (5). pp. 420-423.

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Abstract

This work describes progress towards achieving a flexible, high specific power and low-cost photovoltaic (PV) for emerging large area space applications. The study reports the highest conversion efficiency of 15.3% AM1.5G for a CdTe device on ultra-thin cerium-doped cover glass, the standard protective material for extra-terrestrial PVs. The deposition technique used for all of the semiconductor layers comprising the device structure was atmospheric pressure metal organic chemical vapour deposition. Improvements to the device structure over those previously reported led to a Voc of 788 mV and a relatively low series resistance of 3.3 Ω·cm2. These were largely achieved by the introduction of a post-growth air anneal and a refinement of the front contact bus bars, respectively. The aluminium-doped zinc oxide transparent conductive oxide, being the first layer applied to the cover glass, was subject to thermal shock cycling +80 to (-) 196°C to test the adhesion under the extreme conditions likely to be encountered for space application. Scotch Tape testing and sheet resistance measurements before and after the thermal shock testing demonstrated that the aluminium-doped zinc oxide remained well adhered to the cover glass and its electrical performance unchanged.

Item Type: Article
Subjects : Mechanical Engineering
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
AuthorsEmailORCID
Lamb, DAUNSPECIFIEDUNSPECIFIED
Irvine, SJCUNSPECIFIEDUNSPECIFIED
Clayton, AJUNSPECIFIEDUNSPECIFIED
Barrioz, VUNSPECIFIEDUNSPECIFIED
Kartopu, GUNSPECIFIEDUNSPECIFIED
Baker, MAUNSPECIFIEDUNSPECIFIED
Underwood, CIUNSPECIFIEDUNSPECIFIED
Grilli, RUNSPECIFIEDUNSPECIFIED
Kimber, RUNSPECIFIEDUNSPECIFIED
Hall, JUNSPECIFIEDUNSPECIFIED
Date : July 2015
Funders : Engineering and Physical Science Research Council
Identification Number : 10.1049/iet-rpg.2014.0368
Copyright Disclaimer : © The Institution of Engineering and Technology 2015
Uncontrolled Keywords : solar cells, thin film devices, thermal shock, aluminium compounds, cerium compounds, chemical vapour deposition, protective coatings, low-cost thin film photovoltaics, large area extra-terrestrial applications, ultrathin cerium-doped cover glass, protective material, extra-terrestrial PV, deposition technique, device structure, semiconductor layers, atmospheric pressure metal organic chemical vapour deposition, front contact bus bars, aluminium-doped zinc oxide transparent conductive oxide, cover glass, thermal shock cycling, scotch tape testing, sheet resistance measurements, shock testing
Depositing User : Symplectic Elements
Date Deposited : 27 Jul 2016 08:42
Last Modified : 12 Sep 2016 13:24
URI: http://epubs.surrey.ac.uk/id/eprint/811467

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