2022-05-30 オーストラリア連邦研究会議(ARC)
窓ガラスの代わりに発電機となる半透明の太陽電池は、近年急速に進歩しており、多くの建物、特にガラスのファサードが自家発電に近い状態になる可能性が高まっている。
＜関連情報＞
- https://excitonscience.com/news/more-efficient-longer-lasting-solar-window-technology-improves-again
- https://onlinelibrary.wiley.com/doi/10.1002/advs.202201487#.YpAJKmu3EpI.twitter
組成設計による高性能・安定な半透明ペロブスカイト太陽電池の実現 High-Performance and Stable Semi-Transparent Perovskite Solar Cells through Composition Engineering
Jae Choul Yu,Bin Li,Christopher J. Dunn,Junlin Yan,Benjamin T. Diroll,Anthony S. R. Chesman,Jacek J. Jasieniak
Advanced Science Published: 26 May 2022
DOI:https://doi.org/10.1002/advs.202201487
Abstract
Semi-transparent perovskite solar cells (ST-PeSCs) have tremendous potential as solar windows owing to their higher efficiency and visible transmittance. However, studies toward this application are still nascent, particularly in unraveling the interplay between how the perovskite composition impacts the achievable device performance and stability. Here, the role of A- and X-site modification in APbX3 perovskites is studied to understand their influence on these factors. Through detailed experimental and simulation work, it is found that a perovskite composition consisting of cesium (Cs) and formamidinium (FA) at the A-site delivers the best device performance over a range of band gaps, which are tuned by changes to the X-site anion. Using this optimized perovskite composition, power conversion efficiencies of 15.5% and 4.1% are achieved for ST-PeSCs with average visible transmittance values between 20.7% and 52.4%, respectively. Furthermore, the CsFA-based ST-PeSCs show excellent long-term stability under continuous illumination and heating. The stability of the precursor solutions across each of the studied compositions has also been considered, showing dramatic differences in the structural properties of the perovskites and their device performance for all mixed A-site compositions possessing the archetypal methyl ammonium species, while also confirming the superior stability of the CsFA precursor solutions.
