Solid-state selenium diffusion processing to prepare Sb2(S,Se)3 film for planar heterojunction solar cells

IF 6.3 2区材料科学 Q2 ENERGY & FUELS Solar Energy Materials and Solar Cells Pub Date : 2025-06-15 Epub Date: 2025-02-14 DOI:10.1016/j.solmat.2025.113495

Wangwei Chen , Guoliang Gao , Litao Zhao , Conghui Liu , Juanjuan Qi , Guang Zhu

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Abstract

Excellent optoelectronic properties make antimony selenosulfide an appealing light absorbering material in the solar cell research. Herein, we present a novel solid-state selenium diffusion (SSD) method featuring the reaction of solid-state selenium with precursor film to prepare Sb₂(S,Se)₃ film for efficient solar cells. The effects of reaction temperature and selenium layer thickness on the structure, composition and morphology of deposited film were investigated. Appropriate selenization can eliminate structural defects, while excessive selenization can lead to porous uncompact, loose morphology. Moreover, the band-gap, photo response and carrier transport characteristics which are highly correlated with device performance dependent on the S/Se ratio of antimony selenosulfide Sb₂(S,Se)₃ can be adjusted by SSD process (selenium layer thickness and reaction temperature). The optimized Sb₂(S,Se)₃ solar cell exhibited an efficiency of 6.37 % with a high J_sc of 19.17 mA/cm² and FF of 55.53 % under AM 1.5 illumination.

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固态硒扩散法制备平面异质结太阳能电池用Sb2(S,Se)3薄膜

硒化硫化锑优异的光电性能使其成为太阳能电池研究中极具吸引力的吸光材料。在此，我们提出了一种新的固态硒扩散（SSD）方法，即固态硒与前驱体膜反应制备用于高效太阳能电池的Sb2(S,Se)3薄膜。研究了反应温度和硒层厚度对薄膜结构、组成和形貌的影响。适当的硒化可以消除结构缺陷，而过度的硒化会导致多孔、不致密、松散的形貌。此外，硒化硫化锑Sb2(S,Se)3的S/Se比与器件性能高度相关的带隙、光响应和载流子输运特性可以通过SSD工艺（硒层厚度和反应温度）进行调节。优化后的Sb2(S,Se)3太阳能电池在AM 1.5照明下的效率为6.37%，Jsc为19.17 mA/cm2， FF为55.53%。

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.