Mritunjaya Parashar*, , , Mohin Sharma, , , Saivineeth Penukula, , , Darshpreet Kaur Saini, , , Todd A. Byers, , , Nicholas Rolston, , and , Bibhudutta Rout*,
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引用次数: 0
Abstract
The deployment of perovskite solar cells (PSCs) in outer space missions requires an understanding of how they respond to multiple stressors, such as environmental aging during ground testing, degradation from storage or transport between device fabrication and irradiation facilities, the isolated impact of ion irradiation, and the combined impact of all these stressors simultaneously. In this work, we utilized Rutherford backscattering spectrometry (RBS) to study and quantify the elemental migration in operational PSCs (glass/ITO/NiOx/MeO-2PACz/Cs0.2FA0.8PbI3/C60/BCP/Ag) exposed to He+ irradiation, environmental aging, and their combination. The nondestructive nature of RBS ensured that the devices remained functional, making it possible to correlate their performance characteristics before and after the irradiation. Migration of Ag, Pb, I, and In was observed even in pristine devices, with significantly increased migration following irradiation and further enhancement under ambient environment. Devices stored in a glovebox/drybox postirradiation also exhibited similar trends. Postirradiation microscope images showed electrode swelling of varying severity, indicating possible trapped He blister formation in the surface regions. This study further investigates the damaging effects of nuclear energy loss (Sn) and healing effects of electronic energy loss (Se) from the probing 2 MeV He+ beam used during RBS. It also examines the influence of irradiation timing and staging on the performance of devices previously degraded in both ambient and controlled storage conditions.
期刊介绍:
ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.