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化物合金如何影响锡化物洛夫斯基特太阳能吸收器的光电子质量

Felix J Berger¹, Isabella Poli¹, Ece Aktas²

¹Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via Rubattino 81, 20134 Milano, Italy.

ACS energy letters

|September 14, 2023

概括

用化物将锡矿合金增强了带隙调,但增加了缺陷. 太阳能电池的最佳光电子特性是通过大约33%的化物含量实现的,平衡性能和稳定性.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
太阳能光伏发电是如何实现的

背景情况:

锡基矿为太阳能电池应用提供可调节的带隙.
化物合金对于这些材料的光稳带隙工程至关重要.

研究的目的:

调查化物合金对锡矿带边能量的影响.
了解缺陷活动和光电子特性之间的关系.
为了确定有效的锡矿太阳能电池的最佳成分.

主要方法:

化物:化物比率在锡矿膜中的系统变化.
带边位置和缺陷状态的表征.
对光电子特性和重组动态的分析.

主要成果:

增加含量会改变带边的能量,破坏接受器缺陷的稳定,稳定供体缺陷.
高化物含量 (>50%) 会导致疾病增加和非辐射重组.
最佳的光电子质量和太阳能电池性能在33%的化物含量范围内得到观察.

结论:

通过化合金进行带边调节,显著影响了锡矿中缺陷化学.
了解缺陷活动对于优化宽带间隙锡矿太阳能电池的性能至关重要.
约33%的化物组成为光稳定和高效的设备提供了有希望的平衡.

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