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High-efficiency piezo-phototronic solar cells by strain-induced polarization

Yaming Zhang, Jiaheng Nie, Baohua Teng, Lijie Li Orcid Logo, Yan Zhang Orcid Logo

MRS Bulletin

Swansea University Author: Lijie Li Orcid Logo

  • Accepted Manuscript under embargo until: 15th November 2024

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DOI (Published version): 10.1557/s43577-023-00623-3

Abstract

Toward high power-conversion efficiency (PCE) of a two-dimensional (2D) material solar cell requires carrier and light-management technologies. By strain-induced polarization of piezotronic and piezo-phototronic effect, under the standard AM1.5G solar spectrum, the maximum theoretical PCE is 54.4% o...

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Published in: MRS Bulletin
ISSN: 0883-7694 1938-1425
Published: Springer Science and Business Media LLC 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa65006
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Abstract: Toward high power-conversion efficiency (PCE) of a two-dimensional (2D) material solar cell requires carrier and light-management technologies. By strain-induced polarization of piezotronic and piezo-phototronic effect, under the standard AM1.5G solar spectrum, the maximum theoretical PCE is 54.4% of SnS among the 2D piezoelectric semiconductors, such as SnS, MoS2, GeS, WS2, WSe2, and MoSe2. PCEs of solar cells with 2D WS2 and MoS2 are boosted to 48.1% and 42.8%, respectively. Strain-induced polarization will not only increase the built-in field, but also simplify bandgap gradients by inexpensive strain regulation. In this article, we propose the tandem and parallel piezo-phototronic solar cell (PSC) with single-type 2D piezoelectric semiconductor materials. This work provides a novel way to develop an ultrahigh efficiency 2D material solar cell.
Keywords: Power conversion, Strain-induced polarization, Piezo-phototronic effect, Piezo-phototronic solar cell
College: Faculty of Science and Engineering
Funders: The authors are thankful for the support from Major Project of National Natural Science Foundation of China (grant no. 52192612, 52192610). The authors are thankful for the support from University of Electronic Science and Technology of China (grant no. ZYGX2021YGCX001).

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