Study on Mechanical Modulation of Output Characteristics in Piezoelectric Semiconductor Photovoltaic Cells

YANG Haozhen; LIU Jinxi; YANG Wanli; HU Yuantai

doi:10.21656/1000-0887.450088

Volume 45 Issue 10

Oct. 2024

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Article Navigation > Applied Mathematics and Mechanics > 2024 > 45(10): 1279-1287

YANG Haozhen, LIU Jinxi, YANG Wanli, HU Yuantai. Study on Mechanical Modulation of Output Characteristics in Piezoelectric Semiconductor Photovoltaic Cells[J]. Applied Mathematics and Mechanics, 2024, 45(10): 1279-1287. doi: 10.21656/1000-0887.450088

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Study on Mechanical Modulation of Output Characteristics in Piezoelectric Semiconductor Photovoltaic Cells

doi: 10.21656/1000-0887.450088

YANG Haozhen^1
,,
LIU Jinxi²,
YANG Wanli^{1
,
,},
HU Yuantai^{1
,
,}

1.
School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, P.R.China
2.
Department of Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, P.R.China

Received Date: 2024-04-07
Rev Recd Date: 2024-07-08
Publish Date: 2024-10-01

Abstract

Abstract

The performances of piezoelectric PN junction photovoltaic cells are closely related to the internal potential barrier configurations and the distributions of carriers, and can be tuned through carrier transport characteristic changes by the piezopotentials under the piezo-effect. However, the classical PN junction model fails to describe the coupling effect between multiple physical fields and carriers in the potential barrier zone due to the depletion layer assumptions and others, and in turn gives severely distorted results. Herein a mechanics-electricity-photonics-carrier global multi-field coupling model was developed to investigate the tuning mechanism for mechanical loadings on the output characteristics of ZnO photovoltaic cells. The numerical results indicate that, the short-circuit current, the open-circuit voltage, and the maximum output power of the photovoltaic cell increase with the compressive stress under a fixed light intensity, while tensile stresses are not conducive to improving the performances of photovoltaic cells. In addition, a better tuning effect occurs with a loading region wider than the illuminated region, or with both these two external fields acting in the same side of the n/p-zone.
- ZnO PN junction,
- piezoelectric effect,
- photovoltaic cell,
- numerical analysis

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References(30)

References

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