An Updated Review for Performance Enhancement of Solar Cells by Spectral Modification

Tiancheng Ju and Zeyu Li ()
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Tiancheng Ju: School of Electric Power, South China University of Technology, Guangzhou 510640, China
Zeyu Li: School of Electric Power, South China University of Technology, Guangzhou 510640, China

Energies, 2024, vol. 17, issue 17, 1-22

Abstract: Photovoltaic technology has become one of the major renewable ways to generate electric power. However, the mismatch between the incident solar spectrum and photo-electric response efficiency of solar cells severely constrains their performance. Hence, spectral modification technologies, e.g., up-conversion (UC), down-conversion (DC), and luminescent down-shifting (LDS) technologies have been applied widely in the photovoltaic field to reform the incident spectrum to match the best response band possible. In this paper, we review the latest developments of the three technologies above in terms of material selection, optical characteristics, and photovoltaic performance. It is found that the three most popular materials for conversion are NaYF 4 : Er 3+ , Yb 3+ , and Yb 3+ . The excitation bands for the three technologies are 800–1550 nm, 250–488 nm, and 250–488 nm, respectively, while the emission bands are 523–669 nm, 520–1031 nm, and 490–1010 nm, respectively. Furthermore, issues hindering the development of spectral modification technologies are pointed out, e.g., low absorption efficiency, poor quantum conversion efficiency, and hurdles in commercialization. Finally, suggestions and solutions to address the above-mentioned issues are provided.

Keywords: photovoltaic; spectral modification; up-conversion; down-conversion; luminescent down-shifting (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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