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电子注入和缺陷被动化,用于高效的中矿太阳能电池

Jiale Liu¹, Xiayan Chen², Kaizhong Chen¹

¹Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China.

Science (New York, N.Y.)

|March 14, 2024

概括

可打印的美石太阳能电池 (p-MPSC) 现在达到22.2%的效率. 修改减少了重组,提高了新兴太阳能技术的性能和稳定性.

科学领域:

材料科学
可再生能源
太阳能发电

背景情况:

可打印的美索斯基特太阳能电池 (p-MPSC) 提供了无孔传输层的简化制造.
传统的p-MPSC具有较低的功率转换效率,约为19%.

研究的目的:

设计和分析改进的p-MPSC结构以提高功率转换效率和稳定性.
研究减少p-MPSC重组损失的策略.

主要方法:

使用了设备模拟和载体动态分析.
一个新的p-MPSC架构结合了中孔二氧化,二氧化和矿透的碳.
使用酸盐修饰来减少非辐射重组.

主要成果:

设计的p-MPSC实现了22.2%的功率转换效率.
通过3D电子注入和长距离孔扩散来增强载体分离.
在55°C测试750小时后,稳定性被证明是97%的初始效率.

结论:

优化的p-MPSC设计显著提高了效率和稳定性.
在接口和接触处减少重组是高性能的关键.
这项工作提升了可打印矿太阳能电池的潜力.

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相关概念视频

P-N junction

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...