Clarifying the degradation process of luminescent inorganic perovskite nanocrystals.

Autor:	Kim YB; Department of Physics, Research Institute Physics and Chemistry, Jeonbuk National University Jeonju 54896 Republic of Korea hslee1@jbnu.ac.kr.; Department of Physics, Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea parklab@postech.ac.kr., Kim SH; Department of Physics, Research Institute Physics and Chemistry, Jeonbuk National University Jeonju 54896 Republic of Korea hslee1@jbnu.ac.kr., Jo YR; Advanced Photonics Research Institute, Gwangju Institute of Science and Technology Gwangju 61005 Republic of Korea., Yim SY; Advanced Photonics Research Institute, Gwangju Institute of Science and Technology Gwangju 61005 Republic of Korea., Chin SH; Department of Physics and van der Waals Materials Research Centre, Yonsei University Seoul 03722 Republic of Korea sanghyunchin@yonsei.ac.kr., Park KD; Department of Physics, Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea parklab@postech.ac.kr., Lee HS; Department of Physics, Research Institute Physics and Chemistry, Jeonbuk National University Jeonju 54896 Republic of Korea hslee1@jbnu.ac.kr.
Jazyk:	angličtina
Zdroj:	RSC advances [RSC Adv] 2024 Dec 10; Vol. 14 (52), pp. 38378-38384. Date of Electronic Publication: 2024 Dec 10 (Print Publication: 2024).
DOI:	10.1039/d4ra07548j
Abstrakt:	Metal halide perovskites have emerged as highly promising materials for a range of optoelectronic applications. However, their sensitivity to environmental factors, particularly air moisture, presents significant challenges for both reliable research and commercialization. Moisture-induced degradation is a major issue due to the ionic nature of perovskites, which significantly impacts their luminescent properties. Despite extensive research efforts focusing on device applications, a comprehensive understanding of the degradation mechanisms in perovskites remains limited, largely due to their intrinsic ionic characteristics. In this work, we perform an in-depth analysis of the degradation process in perovskite nanocrystals (NCs) synthesized with varying reaction times, exploring the correlation between their optical and structural properties. Our findings reveal that perovskite NCs with larger crystal sizes exhibit greater stability in ambient air, attributed to their lower surface-to-volume ratio. These insights offer a deeper understanding of the relationship between perovskite NC degradation and their optical performance, contributing to advancements in the field of perovskite-based light-emitting technologies. Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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