Open AccessHigh‐Performance and Stable Semi‐Transparent Perovskite Solar Cells through Composition Engineering
Author(s) -
Yu Jae Choul,
Li Bin,
Dunn Christopher J.,
Yan Junlin,
Diroll Benjamin T.,
Chesman Anthony S. R.,
Jasieniak Jacek J.
Publication year - 2022
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202201487
Subject(s) - perovskite (structure) , formamidinium , transmittance , stability (learning theory) , composition (language) , materials science , energy conversion efficiency , ammonium , work (physics) , caesium , chemical engineering , optoelectronics , chemistry , computer science , inorganic chemistry , crystallography , thermodynamics , physics , linguistics , philosophy , organic chemistry , machine learning , engineering
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 APbX 3 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.