journal article·2023Open access

Unveiling the degraded electron durability in reduced-dimensional perovskites

Yu Lu, Yang Shen, Yan-Qing Li, Kong-Chao Shen, Wei Zhou, Jian-Xin Tang

Nanoscale· Volume 15· Issue 6

Abstract

The operational stability of reduced-dimensional metal halide perovskites (RD-MHPs) lags far behind the practical requirements for future high-definition displays. Thereinto, the electron durability of RD-MHPs plays a critical role in stable LEDs during continuous operation, however, it still lacks adequate research and a deep understanding. Herein, the electron durability and deterioration mechanism of phenethylammonium (PEA+)-modified RD-MHPs are systematically conducted through an in situ photoelectron spectroscopy technique by implementing tunable electron-beam radiation to simulate device operation. The formation of detrimental metallic lead (Pb0) caused by the reduction of lead ions (Pb2+) is observed along with the decomposition of PEA+ under electron-beam radiation, thereby changing the photophysical properties of PEA+-doped RD-MHPs. These results provide deep insight into the process of how injected electrons affect the performance of PEA+-doped perovskite LEDs, which may also provide potential guidance for designing robust and effective organic spacers for RD-MHPs.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Perovskite Materials and Applications · Electronic and Structural Properties of Oxides · ZnO doping and properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China

School of Physics and Electronic Science, Ministry of Education Nanophotonics and Advanced Instrument Engineering Research Center, East China Normal University, Shanghai 200241, China

Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa 999078, Macao SAR, China

Funding

National Key Research and Development Program of China · Fundo para o Desenvolvimento das Ciências e da Tecnologia · National Natural Science Foundation of China · Science and Technology Commission of Shanghai Municipality · Jiangsu Science and Technology Department · Collaborative Innovation Center of Suzhou Nano Science and Technology

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