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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/14665

Title: Multilayer broadband anti-reflective coatings for bulk heterojunction polymer solar cells
Authors: Kaminski, Piotr M.
Lisco, Fabiana
Bass, Kevin
Barrows, A.T.
Lidzey, D.G.
Walls, Michael
Issue Date: 2014
Publisher: © The Solar Energy Society
Citation: KAMINSKI, P.M. ... et al., 2014. Multilayer broadband anti-reflective coatings for bulk heterojunction polymer solar cells. IN: Proceedings of the 10th Photovoltaic Science, Applications and Technology Conference C96 (PVSAT-10), Holywell Park, Loughborough University, Loughborough 23 –25 April 2014, 4 pp.
Abstract: The photocurrent produced by solar cells is limited by reflection losses for all types of photovoltaic devices. The first reflection loss occurs at the glass/air interface of the photovoltaic device. A solar cell without a light trapping mechanism in place loses around 4 % of the solar energy at this interface. To minimise the losses, a broadband multilayer thin film anti-reflection (MAR) coating has been designed and deposited onto the glass surface of a solar cell. The coating consisted of four dielectric layers of alternating thin films of ZrO2 and SiO2. The layers were deposited by using high rate pulsed DC magnetron sputtering using time only for nanometre thickness control. Spectrophotometer measurements confirm that the transmission increased over the spectrum utilized by the bulk heterojunction (BHJ) solar cell (350nm- 700nm). The weighted average reflection reduced from 4.22% to 0.99%. BHJ solar cells with a PCDTBT:PCBM blend serving as the active layer were prepared on a MAR coated soda lime glass slides to verify the effectiveness of the coating. The efficiency increased by 0.18% at STC from 4.98% to 5.17% (a 3.7% relative increase). The gain was achieved by increasing the photocurrent from 11.96 mA/cm2 to 12.36 mA/cm2.
Description: This is a conference paper. The Photovoltaic Science Application and Technology (PVSAT) website is at: http://www.pvsat.org.uk/
Version: Submitted for publication
URI: https://dspace.lboro.ac.uk/2134/14665
Appears in Collections:Conference Papers and Contributions (CREST)

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