Small Molecule Approach to Passivate Undercoordinated Ions in Perovskite Light Emitting Diodes: Progress and Challenges
- Authors
- Lee, Ji Yeong; Kim, Seo Yeon; Yoon, Hyo Jae
- Issue Date
- 1월-2022
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- passivation; perovskite light-emitting diodes; small molecules; undercoordinated ions
- Citation
- ADVANCED OPTICAL MATERIALS, v.10, no.1
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED OPTICAL MATERIALS
- Volume
- 10
- Number
- 1
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/135302
- DOI
- 10.1002/adom.202101361
- ISSN
- 2195-1071
- Abstract
- Perovskite light-emitting diodes (PeLEDs) hold promise for the development of next-generation display and light technologies; however, various problems related to factors such as external quantum efficiency (EQE), long-term stability, and dependence on toxic species hinder their successful debut in display and lighting markets. Research on PeLEDs involving the small-molecule approach-the incorporation of small organic molecules into or onto active perovskite layers in PeLEDs for mitigating the aforementioned issues-has burgeoned in the last eight years. This review covers recent advances and challenges in the small-molecule approach by i) surveying the chemical structures used in the small-molecule approach, ii) summarizing the methods of molecular insertion into PeLED devices, iii) comprehensively discussing the effects of small-molecule-based interfacial engineering and passivation of undercoordinated metal and halide ions on the photophysical functions of devices and their mechanisms, iv) emphasizing the small-molecule-induced enhanced performance of devices in the context of long-term stability and EQE, and v) providing perspectives and discussing challenges for future research.
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Collections - College of Science > Department of Chemistry > 1. Journal Articles
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