@article{7ba6f9aacb5847e0b050ff731db73075,
title = "Accelerated aging of all-inorganic, interface-stabilized perovskite solar cells",
abstract = "To understand degradation routes and improve the stability of perovskite solar cells (PSCs), accelerated aging tests are needed. Here, we use elevated temperatures (up to 110°C) to quantify the accelerated degradation of encapsulated CsPbI3 PSCs under constant illumination. Incorporating a two-dimensional (2D) Cs2PbI2Cl2 capping layer between the perovskite active layer and hole-transport layer stabilizes the interface while increasing power conversion efficiency of the all-inorganic PSCs from 14.9 to 17.4%. Devices with this 2D capping layer did not degrade at 35°C and required >2100 hours at 110°C under constant illumination to degrade by 20% of their initial efficiency. Degradation acceleration factors based on the observed Arrhenius temperature dependence predict intrinsic lifetimes of 51,000 ± 7000 hours (>5 years) operating continuously at 35°C.",
author = "Xiaoming Zhao and Tianran Liu and Burlingame, {Quinn C.} and Tianjun Liu and Rudolph Holley and Guangming Cheng and Nan Yao and Feng Gao and Loo, {Yueh Lin}",
note = "Funding Information: The authors thank E. Tsai and R. Li from Brookhaven National Laboratory for their assistance with x-ray scattering measurements. X-ray scattering measurements were conducted at the Center for Functional Nanomaterials (CFN) and the Complex Materials Scattering (CMS) beamline of the National Synchrotron Light Source II (NSLS-II), which both are US DOE Office of Science Facilities, at Brookhaven National Laboratory under Contract No. DE-SC0012704. The authors acknowledge the use of Princeton{\textquoteright}s Imaging and Analysis Center, which is partially supported through the Princeton Center for Complex Materials (PCCM), a National Science Foundation (NSF)MRSEC program (DMR-2011750). Y.-L.L. acknowledges support from the National Science Foundation, under grants DMR-1627453 and CMMI-1824674. F.G. acknowledges the Swedish Government Strategic Research Area in Materials Science on Functional Materials at Link{\"o}ping University (Faculty Grant SFO-Mat-LiU No. 2009-00971). T.R.L. thanks the Julis Romo Rabinowitz Graduate Fellowship for funding. Q.C.B. thanks the Arnold and Mabel Beckman Foundation for supporting this work. Publisher Copyright: {\textcopyright} 2022 American Association for the Advancement of Science. All rights reserved.",
year = "2022",
month = jul,
day = "15",
doi = "10.1126/science.abn5679",
language = "English (US)",
volume = "377",
pages = "307--310",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6603",
}