@article{aae23f1b4a964d4893eea77be51d2ed7,
title = "Chiral-structured heterointerfaces enable durable perovskite solar cells",
abstract = "Mechanical failure and chemical degradation of device heterointerfaces can strongly influence the long-term stability of perovskite solar cells (PSCs) under thermal cycling and damp heat conditions. We report chirality-mediated interfaces based on R-/S-methylbenzyl-ammonium between the perovskite absorber and electron-transport layer to create an elastic yet strong heterointerface with increased mechanical reliability. This interface harnesses enantiomer-controlled entropy to enhance tolerance to thermal cycling–induced fatigue and material degradation, and a heterochiral arrangement of organic cations leads to closer packing of benzene rings, which enhances chemical stability and charge transfer. The encapsulated PSCs showed retentions of 92% of power-conversion efficiency under a thermal cycling test (−40°C to 85°C; 200 cycles over 1200 hours) and 92% under a damp heat test (85% relative humidity; 85°C; 600 hours).",
author = "Tianwei Duan and Shuai You and Min Chen and Wenjian Yu and Yanyan Li and Peijun Guo and Berry, {Joseph J.} and Luther, {Joseph M.} and Kai Zhu and Yuanyuan Zhou",
note = "Y.Z. acknowledges the Early Career Scheme (22300221), General Research Fund (12302822), and Collaborative Research Scheme (CRS_HKUST203/23) from the Hong Kong Research Grant Council (RGC). This work was authored in part by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy for the US Department of Energy (DOE) under contract DE-AC36-08GO28308. K.Z., J.M.L., and J.J.B. acknowledge support on chiral interlayer studies from the Center for Hybrid Organic-Inorganic Semiconductors for Energy (CHOISE), an Energy Frontier Research Center funded by the Office of Basic Energy Sciences, Office of Science within the DOE. S.Y. and M.C. acknowledge support on device fabrication and stability studies from the Advanced Perovskite Cells and Modules program, funded by the DOE, Office of Energy Efficiency and Renewable Energy, Solar Energy Technologies Office Award Number 38256. P.G. acknowledges support from the National Science Foundation (NSF) under grant CHE-2305138. T.D. acknowledges the RGC Postdoctoral Fellowship Scheme. We also acknowledge M. Hao, C. Yang, and T. Liu from Slab for the general experimental assistance; O. Durak for assisting the PL measurements; X. Zhang, G. Liu, and G. Qiao for contributing to the theoretical calculations; Z. Ma for contributing to the mechanical-property measurements; K.W. Cheah for providing advice on film adhesion tests; and S. Guo for assisting the scanning electron microscopy measurements. Additionally, we extend our gratitude to L. Schelhas for her constructive comments. Publisher Copyright: {\textcopyright} 2024 the authors, some rights reserved.",
year = "2024",
month = may,
day = "24",
doi = "10.1126/science.ado5172",
language = "English",
volume = "384",
pages = "878--884",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6698",
}
