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为Sb₂(S,Se) ₃太阳能电池实现超过20的效率的优化路径

Xiaoyong Xiong^1,2,3, Chao Ding², Bingfeng Jiang³

¹College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China.

Nanomaterials (Basel, Switzerland)

|September 13, 2024

概括

反硫化太阳能电池显示出有前途,但开放电路电压和填充因子损失限制了效率. 这项研究优化了内部电阻和接口特性,实现了超过26%的功率转换效率.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
可再生能源可再生能源是可再生能源.

背景情况:

抗二硫化 (Sb₂(S,Se) ₃) 是薄膜光伏的环保半导体.
当前Sb 2 太阳能电池达到10.75%的功率转换效率 (PCE),受到开放电路电压 (V oc) 和填充因子 (FF) 损失的阻碍.
了解V_oc,FF和内部电阻之间的关系对于提高效率至关重要.

研究的目的:

为了研究V_oc和FF在Sb₂(S,Se) ₃太阳能电池中的理论联系.
开发和实施阶段性优化策略,以克服V_oc和FF损失.
为了实现Sb₂(S,Se) ₃的薄膜光伏,PCE超过20%.

主要方法:

对V_oc和FF对内部电阻和非辐射重组的依赖性的理论分析.
阶段性优化包括内部阻力降低,带级修改,界面重组最小化和吸收层加厚.
薄膜太阳能电池Sb₂(S,Se) ₃的制造和特征.

主要成果:

优化内部阻力使FF损失从10.79%降至2.80%,使PCE增至12.57%.
修改频段水平增加了V_oc18.75%,达到超过15%的PCE.
将接口重组缩小到最小,并将吸收器厚度增加到600nm,导致PCE的创纪录为26.77%.

结论:

内部电阻在低V_oc/FF条件下显著影响FF,超过非辐射重组.
一个系统的优化方法解决内部电阻,带对齐,接口重组,和吸收器厚度是有效的.
这项研究为开发高效率Sb₂(S,Se)₃太阳能电池提供了路线图,超过20%的PCE并达到26.77%.

关键词:

Sb2(S,Se) 3 太阳能电池的使用情况填充因子填充因子内部电阻是内部电阻.非辐射重组的非辐射重组.在开放电路中,电压是开放的.

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