A donor–acceptor ligand boosting the performance of FA 0.8 Cs 0.2 PbBr 3 nanocrystal light-emitting diodes
Source abstract
Abstract
A donor-acceptor ligand, 3-amino-2-bromo-6-methoxypyridine (ABMeoPy), was introduced to passivate FA0.8Cs0.2PbBr3 nanocrystals (NCs) by a post-processing method. The donor-acceptor interaction can greatly enhance the coordination bond of pyridine-Pb2+, and improve FA0.8Cs0.2PbBr3 NC performance with 95.99% photoluminescence quantum yield (PLQY), 6-month stability in solution, and 26% trap density decrease. In the light of ABMeoPy passivation of FA0.8Cs0.2PbBr3 NCs, the maximum luminance, the maximum current efficiency, and EQE of light-emitting diodes (LEDs) increased 69%, 110%, and 111%, respectively. The strategy of using D-A molecules to passivate perovskite NCs is quite simple and effective, which can be widely promoted in perovskite-based LEDs or solar cells.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors
Institute of Advanced Materials (IAM)
Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
Nanjing University of Posts & Telecommunications (NUPT)
Nanjing 210023
Funding
National Key Research and Development Program of China · Natural Science Foundation of Jiangsu Province · Priority Academic Program Development of Jiangsu Higher Education Institutions · National Natural Science Foundation of China · Jilin University · Nanjing University of Posts and Telecommunications
References (44)
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