Triple-junction solar cells with 39.5% terrestrial and 34.2% space efficiency enabled by thick quantum well superlattices

被引：119

作者：

France, Ryan M. ^{[1
]}

Geisz, John F. ^{[1
]}

Song, Tao ^{[1
]}

Olavarria, Waldo ^{[1
]}

Young, Michelle ^{[1
]}

Kibbler, Alan ^{[1
]}

Steiner, Myles A. ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

JOULE | 2022年 / 6卷 / 05期

关键词：

DETAILED BALANCE LIMIT; HIGH-PERFORMANCE; MULTIJUNCTION; BANDGAP;

D O I：

10.1016/j.joule.2022.04.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multijunction solar cell design is guided by both the theoretical optimal bandgap combination as well as the realistic limitations to materials with these bandgaps. For instance, triple-junction III-V multijunction solar cells commonly use GaAs as a middle cell because of its near-perfect material quality, despite its bandgap being higher than optimal for the global spectrum. Here, we modify the middle cell bandgap using thick GaInAs/GaAsP strain-balanced quantum well (QW) solar cells with excellent voltage and absorption. These high-performance QWs are incorporated into a triple-junction inverted metamorphic multijunction device consisting of a GaInP top cell, GaInAs/GaAsP QW middle cell, and lattice-mismatched GaInAs bottom cell, each of which has been highly optimized. We demonstrate triple-junction efficiencies of 39.5% and 34.2% under the AM1.5 global and AM0 space spectra, respectively, and the global efficiency is higher than previous record six-junction devices.

引用

页码：1121 / 1135

页数：15

共 85 条

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