Current transport efficiency analysis of multijunction solar cells by luminescence imaging
Current transport efficiency analysis of multijunction solar cells by luminescence imaging
复制标题
通过发光成像分析多结太阳能电池的电流传输效率
DOI：
10.1002/pip.3140
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
and M. Sugiyama
中科院分区：
文献类型：
--
作者：
H. Xu;A. Delamarre;B. M. F. Yu Jeco;H. Johnson;K. Watanabe;Y. Okada;J.-F. Guillemoles;Y. Nakano;and M. Sugiyama
多结太阳能电池目前在所有类型的太阳能电池中在效率上领先。然而，这些电池在集中照明下的效率受到接触网格和串联电阻的遮蔽之间的权衡的限制。在本文中，我们提供了一种方法，利用发光成像的电流传输效率的电阻效应的精确和快速的测量。首次采用光束感生电流（LBIC）测量方法计算电流输运效率，并与发光法进行了比较。在这两种手段的运输效率的配置文件是在良好的协议。此外，使用SPICE的准三维模拟来解释传输效率图像。我们发现载流子输运效率分布主要受中间电池周边复合的影响。
Multijunction solar cells are currently leading in efficiency among all types of solar cells. However, the efficiency of those cells under concentrated illumination is limited by the trade‐off between shadowing by the contact grid and series resistances. In this paper, we provide a method using luminescence to image the current transport efficiency for a precise and rapid measurement of the resistance effect. Light beam induced current (LBIC) measurement is used for the first time to calculate current transport efficiency in comparison with that of the luminescence method. Profiles of transport efficiency in both means are in good agreement. Furthermore, a quasi‐3‐D simulation using SPICE is used to explain the transport efficiency image. We find that the carrier transport efficiency distribution is primarily influenced by the perimeter recombination of the middle cell.