光伏（PV）组件和电池.通过电致发光图像的定量分析测量二极管理想因数

[中文适用范围]： 本文件规定了一种通过定量分析电致发光 (EL) 图像来测量晶体硅光伏电池和模块的二极管理想因子的方法。本文件提供了术语二极管理想因子 n 的定义，即电流的自然对数关于施加电压的增量比的倒数，该值与填充因子 FF 相关，并作为代表光伏电池和模块输出效率的有效指标，与其他关键参数开路电压 Voc 和短路电流 Isc 一起使用。本文件仅适用于晶体硅光伏电池和模块。 [外文原描述]： IEC TS 63109:2022 specifies a method to measure the diode ideality factor of photovoltaic cells and modules by quantitative analysis of electroluminescence (EL) images. This document provides a definition of the term diode ideality factor n, as the inverse of increment ratio of natural logarithm of current as a function of applied voltage, which is related to the fill factor FF, and is useful as an effective indicator to represent the output efficiency of photovoltaic cells and modules with the other key parameters open circuit voltage Voc and short circuit current Isc.