2026-04-21 東京大学
＜関連情報＞
- https://www.rcast.u-tokyo.ac.jp/ja/news/release/20260421.html
- https://pubs.acs.org/doi/10.1021/acsomega.6c00369
ナノ粒子技術を用いて作製したFAPbI₃広帯域ギャップペロブスカイトを用いた、光電変換効率30%の全ペロブスカイト4端子スペクトル分割太陽電池 All-Perovskite Four-Terminal Spectral Splitting Solar Cells of 30% PCE with FAPbI3 Wide-Bandgap Perovskite Fabricated by Nanoparticle Technology
Kei Ito,Weina Zhang,Kazuteru Nonomura,Keishi Tada,Fumiyasu Awai,Takumi Kinoshita,Takeru Bessho,Jotaro Nakazaki,Satoshi Uchida,and Hiroshi Segawa
ACS Omega Published: April 20, 2026
DOI:https://doi.org/10.1021/acsomega.6c00369
Abstract
All-perovskite multijunction solar cells are one of the important candidates for future photovoltaic devices with high energy conversion efficiency. In the case of double-junction solar cells, it is crucial to improve the performance of the top cell. In this study, we integrated a highly efficient FAPbI3 perovskite wide-bandgap top cell with Sn–Pb mixed perovskites as a narrow-bandgap (NBG) bottom cell, as a spectral splitting four-terminal system enabling a broader WBG–NBG pairing compared to two-terminal architectures. Using the spectral splitter with a cutoff wavelength of 775 nm, a maximum power conversion efficiency (PCE) of 30.2% was accomplished. These results highlight the strong potential of mechanically stacked double-junction perovskite solar cells for further efficiency improvements.
