High-efficiency III-V//Si tandem solar cells enabled by the Pd nanoparticle array-mediated "smart stack approach

Smart stack is a handy technique to produce two-terminal tandem structures from various photovoltaic materials using Pd nanoparticle arrays as bonding mediators. Because of the increasing interest in III-V/Si integration, we herein demonstrated smart stack-based triple-junction cells consisting of I...

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Published inApplied physics express Vol. 10; no. 7; pp. 72301 - 72304
Main Authors Mizuno, Hidenori, Makita, Kikuo, Tayagaki, Takeshi, Mochizuki, Toshimitsu, Sugaya, Takeyoshi, Takato, Hidetaka
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.07.2017
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Summary:Smart stack is a handy technique to produce two-terminal tandem structures from various photovoltaic materials using Pd nanoparticle arrays as bonding mediators. Because of the increasing interest in III-V/Si integration, we herein demonstrated smart stack-based triple-junction cells consisting of InGaP/GaAs and crystalline Si subcells. Despite the use of classic Al-back surface field-type Si subcells, current matching with the InGaP/GaAs subcells was realized, and the promising efficiency of 25.1% was successfully achieved. The potential and versatility of the smart stack approach as a fabrication tool for high-efficiency multi-junction cells were further enhanced through this study.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.10.072301