使用电压依赖光发光成像技术量化单体矿/并联太阳能电池中连续电阻的空间分布
Oliver Fischer1,2, Anh Dinh Bui3, Yan Zhu4
1Fraunhofer Institute for Solar Energy Systems ISE, Freiburg, Germany.
Small (Weinheim an der Bergstrasse, Germany)
|February 27, 2026
概括
量化矿/双联太阳能电池的局部功耗损失对于商业化至关重要. 本研究引入了一种光发光成像方法,以准确测量局部串联电阻 (LTR),识别影响效率的电阻损失.
科学领域:
- 太阳能光伏发电是如何实现的
- 材料科学 材料科学 材料科学
- 设备物理 设备物理
背景情况:
- 单立体矿/双联太阳能电池提供了高效率的潜力,但受到性能损失的限制.
- 量化本地电力损失对于优化这些设备和实现商业扩展至关重要.
研究的目的:
- 开发和验证一种方法来提取矿/双相太阳能电池中的局部联系列电阻 (LTR).
- 为了确定这些设备性能下降的物理来源.
主要方法:
- 在不同的照明强度下利用偏向电压依赖光发光 (PL) 成像.
- 应用了普朗克定律与PL成像相结合.
- 使用有限元模拟来验证在现实的条件下方法的稳定性.
主要成果:
- 在存在电流不匹配,低分流电阻和发光合的情况下证明了该方法的可靠性.
- 该方法应用于29%效率的设备,发现由于电阻效应导致的1.9%绝对效率损失.
- 表明可靠的LTR估计甚至可以实现对具有适当稳定性的转移稳定的矿器件.
结论:
- 光发光成像是一种强大的诊断工具,用于精确确定双联太阳能电池中的性能限制区域.
- 该方法有助于指导下一代光伏技术的设计和处理改进.
- 精确量化局部串联电阻是释放矿/串联太阳能电池的全部潜力的关键.
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