Enhancing the Brightness of Cesium Lead Halide Perovskite Nanocrystal Based Green Light-Emitting Devices through the Interface Engineering with Perfluorinated Ionomer
City University of Hong Kong · State Key Laboratory on Integrated Optoelectronics · +2 more institutions
Abstract
High photoluminescence quantum yield, easily tuned emission colors, and high color purity of perovskite nanocrystals make this class of material attractive for light source or display applications. Here, green light-emitting devices (LEDs) were fabricated using inorganic cesium lead halide perovskite nanocrystals as emitters. By introducing a thin film of perfluorinated ionomer (PFI) sandwiched between the hole transporting layer and perovskite emissive layer, the device hole injection efficiency has been significantly enhanced. At the same time, PFI layer suppressed charging of the perovskite nanocrystal emitters thus preserving their superior emissive properties, which led to the three-fold increase in peak…
Citation impact
- FWCI
- 84.27
- Percentile
- 100%
- References
- 54
Authors
7- XZXiaoyu ZhangCorresponding
City University of Hong Kong, State Key Laboratory on Integrated Optoelectronics, Jilin University
- HLHong Lin
University of Hong Kong
- HHHe Huang
City University of Hong Kong
- CJClaas J. Reckmeier
City University of Hong Kong
- YZYù Zhang
State Key Laboratory on Integrated Optoelectronics, Jilin University
Topics & keywords
- Nanocrystal
- Perovskite (structure)
- Light-emitting diode
- Halide
- Materials science
- Photoluminescence
- Optoelectronics
- Brightness