RESEARCH ON APPLICATION OF DIFFERENT BACK REFLECTION STRUCTURES IN SILICON HETEROJUNCTION SOLAR CELLS

Yao Yubo; Zhang Liping; Liu Wenzhu; Shi Jianhua; Meng Fanying; Liu Zhengxin

doi:10.19912/j.0254-0096.tynxb.2021-0430

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (10) : 37-42. DOI: 10.19912/j.0254-0096.tynxb.2021-0430

RESEARCH ON APPLICATION OF DIFFERENT BACK REFLECTION STRUCTURES IN SILICON HETEROJUNCTION SOLAR CELLS

Yao Yubo^1,2, Zhang Liping^1,2, Liu Wenzhu¹, Shi Jianhua¹, Meng Fanying^1,2, Liu Zhengxin^1,2

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Abstract

This paper aims to use silver nanoparticles （Ag NPs） and SiO_x/Ag back reflection structure to improve the infrared spectral response of silicon heterojunction （SHJ） solar cells in the 900-1200 nm band. By preparing the SiO_x/Ag back reflection structure on the back side of the SHJ solar cell, and embedding Ag NPs in the SiO_x film, an attempt was made to superimpose the Ag NPs and the SiO_x/Ag back reflection structure to maximize the infrared spectral response of the SHJ solar cell. The results show that the SiO_x/Ag back reflection structure can effectively reduce the escape loss of infrared light and improve the infrared spectral response of the solar cell, so that the short-circuit current density of the textured SHJ solar cell is increased from 37.74 mA/cm² to 38.07 mA/cm². However, the embedded Ag NPs cannot help the SiO_x/Ag back reflection structure to further improve the infrared spectral response of the textured SHJ solar cell, which proves that the local surface plasmon resonance effect is only effective for the flat SHJ solar cell with poor light trapping ability.

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Yao Yubo, Zhang Liping, Liu Wenzhu, Shi Jianhua, Meng Fanying, Liu Zhengxin. RESEARCH ON APPLICATION OF DIFFERENT BACK REFLECTION STRUCTURES IN SILICON HETEROJUNCTION SOLAR CELLS[J]. Acta Energiae Solaris Sinica. 2022, 43(10): 37-42 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0430

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