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在III-V太阳能电池中的异质基质照明效应

Brianna Conrad¹, Behrang H Hamadani¹

¹National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899 USA.

IEEE journal of photovoltaics

|March 7, 2024

概括

基板照明对于III-V太阳能电池的性能来说是意想不到的关键,即使没有直接的功率贡献. 这一发现影响了太阳能电池的表征和开发,以适应各种照明条件.

科学领域:

材料科学材料科学材料科学
太阳能光伏发电是如何实现的
半导体物理半导体物理

背景情况:

太阳能电池的标准电流-电压 (IV) 测量假设子带隙光对性能的影响最小.
这种假设是基于这样一个原则:带隙以下的光不会被活跃的太阳能电池层吸收.
因此,通常认为子频段间隙光不对发电做出贡献.

研究的目的:

为了研究在III-V太阳能电池中观察到的一种新现象,用基板.
为了证明基板照明对于最佳太阳能电池性能的必要性.
了解这种现象对太阳能电池特征和应用的含义.

主要方法:

太阳能电池在不同的照明条件下进行的表征,包括低光场景.
使用电流-电压 (IV) 测量进行性能分析.
电测量和设备建模以验证实验观测.

主要成果:

发现了一种新奇的现象,即基板照明对于基 III-V 太阳能电池的良好性能是必需的.
这种基板照明对超出III-V连接处的短路电流,开放电路电压或发电产生无足轻重的贡献.
实验结果通过额外的静脉测量,电光发射和模拟建模来重现.

结论:

基板照明在特定太阳能电池架构的性能中起着关键的,尽管间接的作用.
这一发现挑战了太阳能电池表征和性能预测中的传统假设.
这些结果对开发用于非标准光源的太阳能电池具有重要意义,例如室内光伏和LED照明.

关键词:

太阳能光伏的表征电路分析电路分析 III-V 和缩器光伏电力光伏电池是一个光伏电池.

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