Device Characterization For Design Optimization Of 4 Junction Inverted Metamorphic Concentrator Solar Cells

被引：20
|
作者：
Geisz, John F. [1 ]
France, Ryan M. [1 ]
Garcia, Ivan [1 ]
Steiner, Myles A. [1 ]
Friedman, Daniel J. [1 ]
机构：
[1] Natl Renewable Energy Lab, Golden, CO 80401 USA
来源：
10TH INTERNATIONAL CONFERENCE ON CONCENTRATOR PHOTOVOLTAIC SYSTEMS (CPV-10) | 2014年 / 1616卷
关键词：
4-junction; concentrator solar cell; electroluminescence; luminescent coupling;
D O I：
10.1063/1.4897041
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Quantitative electroluminescence (EL) and luminescent coupling (LC) analysis, along with more conventional characterization techniques, are combined to completely characterize the subcell JV curves within a four-junction (4J) inverted metamorphic solar cell (IMM). The 4J performance under arbitrary spectral conditions can be predicted from these subcell JV curves. The internal radiative efficiency (IRE) of each junction has been determined as a function of current density from the external radiative efficiency using optical modeling, but this required the accurate determination of the individual junction current densities during the EL measurement as affected by LC. These measurement and analysis techniques can be applied to any multijunction solar cell. The 4J IMM solar cell used to illustrate these techniques showed excellent junction quality as exhibited by high IRE and a one-sun AM1.5D efficiency of 36.3%. This device operates up to 1000 suns without limitations due to any of the three tunnel junctions.
引用
收藏
页码：114 / 118
页数：5
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