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Non-Epitxaial GaAs/Organic Heterojunction Solar Cells With 830mV Voc

Jahelka, Phillip and Glaudell, Rebecca and Atwater, Harry (2020) Non-Epitxaial GaAs/Organic Heterojunction Solar Cells With 830mV Voc. In: 2020 47th IEEE Photovoltaic Specialists Conference (PVSC). IEEE , Piscataway, NJ, pp. 649-651. ISBN 9781728161150.

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We present a GaAs heterojunction solar cell that achieves 830mV Voc without any epitaxial processing or external doping on a bulk wafer and has an area of 10mm^2. The device consists of a bulk, n-type GaAs wafer with sulfur passivation, 10 nm of spun coat TCTA, an organic p-type semiconductor, 5 nm of of evaporated WO3, and a spun-coat film of highly-conductive PEDOT:PSS for lateral current transport. This achieved voltage paves the way for thin-film devices that can achieve 20% efficiency with only low-capital intensity processing. Additional results gleaned in achieving this voltage include: a robust, reliable, residue-free GaAs passivation process, discovering processing conditions compatible with the passivation for forming heterojunctions, and learning about the importance of lateral conduction in non-traditional heterostructure devices.

Item Type:Book Section
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URLURL TypeDescription
Jahelka, Phillip0000-0002-1460-7933
Atwater, Harry0000-0001-9435-0201
Additional Information:© 2020 IEEE. This material is based upon work primarily supported by the National Science Foundation (NSF) and the Department of Energy (DOE) under NSF CA No. EEC-1041895. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect those of NSF or DOE.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Subject Keywords:Photovoltaic Cells, Heterojunctions, GaAs, Organic, Lifetime, Photoluminesence
Record Number:CaltechAUTHORS:20210702-194228884
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Official Citation:P. Jahelka, R. Glaudell and H. Atwater, "Non-Epitxaial GaAs/Organic Heterojunction Solar Cells With 830mV Voc," 2020 47th IEEE Photovoltaic Specialists Conference (PVSC), 2020, pp. 0649-0651, doi: 10.1109/PVSC45281.2020.9300460
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:109718
Deposited By: Tony Diaz
Deposited On:02 Jul 2021 20:15
Last Modified:09 Jul 2021 17:50

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