Title: Photocurrent increase in amorphous Si solar cells by increased reflectivity of LiF/Al electrodes
Authors : Lanz, Thomas
Fang, Liang
Baik, Seung Jae
Lim, Kong Su
Ruhstaller, Beat
Published in : Solar Energy Materials & Solar Cells
Volume(Issue) : 107
Pages : 259
Pages to: 262
Publisher / Ed. Institution : Elsevier
Issue Date: Dec-2012
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subject (DDC) : 621.3: Electrical engineering and electronics
Abstract: Thin layers of lithium fluoride (LiF), together with aluminum, can be used as rear electrodes in high-efficiency amorphous silicon (a-Si:H) solar cells on rough substrates, as recently demonstrated by Fang et al. (IEEE Transactions on Electron Devices 58(9)(2011) 3048–3052). We employ numerical modeling to evaluate the optical losses and charge generation profiles in these thin film solar cells. We find that the increase in rear electrode reflectivity by inserting LiF, leading to increased photocurrent, is the dominant factor in device performance improvement, accounting for 7% gain in photocurrent. The simulations are in good agreement with measurements of pin a-Si:H solar cells with varied rear electrodes.
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Article in scientific Journal
DOI : 10.1016/j.solmat.2012.06.044
ISSN: 0927-0248
URI: https://digitalcollection.zhaw.ch/handle/11475/7037
Appears in Collections:Publikationen School of Engineering

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