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Research Article | Open Access

Improving open-circuit voltage and short-circuit current of high-efficiency silicon-based planar heterojunction solar cells by combining V2O5 with PEDOT:PSS

Zhiting Luoa, Chen Yanga, Xiuhua Chena,c( ), Wenhui Mab, Shaoyuan Lib, Kaixin Fua
School of Materials and Energy, Yunnan University, Yunnan, 650500, China
Yunnan Silicon Materials Engineering Technology Research Center, Kunming University of Science and Technology, 650093, China
National Joint International Research Center for Optoelectronic Energy Materials, Yunnan University, Yunnan, 650500, China

Peer review under responsibility of The Chinese Ceramic Society.

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Graphical Abstract

Abstract

In recent years, a novel PEDOT:PSS/n-Si planar heterojunction solar cell has been extensively studied in the photovoltaic field. Different V2O5-IPA concentrations mixed in PEDOT:PSS samples as hole transport layer were prepared by means of spin coating technique and mechanical mixing of organic and inorganic materials. V2O5 was studied for its effects on the surface morphology, chemical composition, and optical transmittance of PEDOT:PSS films. The findings of the study show that the addition of V2O5 particles changes the surface morphology of PEDOT:PSS films and promotes its superior ohmic contact with the Si interface. Furthermore, PEDOT:PSS incorporated with V2O5 particles that have outstanding optical and semiconductor properties reduces the rate of carrier recombination at the device interface and blocks electron transport to the anode in the fabricated Si-based solar cells. When compared to conventional PEDOT:PSS/Si planar heterojunction solar cells, the fill factor, photoelectric conversion efficiency, open-circuit voltage, and short-circuit current density of the devices prepared in this study can be significantly improved, reaching up to 70.98%, 15.17%, 652 mV and 32.8 mA/cm2, respectively. This research provides a promising and effective method for improving the photoelectric conversion performance of PEDOT:PSS/Si heterojunction solar cells, which enables the application of V2O5 in Si solar cells.

Keywords

SiPEDOT:PSSHeterojunction photovoltaic devicesV2O5-IPAHigh conductivitySemiconductor film

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Journal of Materiomics
Volume 9 Issue 3,
May 2023
Pages 438-446
DOI: 10.1016/j.jmat.2022.12.008
Cite this article:
Luo Z, Yang C, Chen X, et al. Improving open-circuit voltage and short-circuit current of high-efficiency silicon-based planar heterojunction solar cells by combining V2O5 with PEDOT:PSS. Journal of Materiomics, 2023, 9(3): 438-446. https://doi.org/10.1016/j.jmat.2022.12.008

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Received: 03 November 2022
Revised: 09 December 2022
Accepted: 27 December 2022
Published: 21 January 2023
© 2023 The Authors.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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