Reciprocally Photovoltaic Light-Emitting Diode Based on Dispersive Perovskite Nanocrystal.
Jiong LiChenghao DuanQiaoyun WenLigang YuanShibing ZouChang ChenWeiguang XieDongxu LinChristopher C S ChanKam Sing WongKeyou YanPublished in: Small (Weinheim an der Bergstrasse, Germany) (2022)
Integrating highly efficient photovoltaic (PV) function into light-emitting diodes (LEDs) for multifunctional display is of great significance for compact low-power electronics, but it remains challenging. Herein, it is demonstrated that solution engineered perovskite nanocrystals (PNCs, ≈100 nm) enable efficient electroluminescence (EL) and PV performance within a single device through tailoring the dispersity and interface. It delivers the maximum brightness of 490 W sr -1 m -2 at 2.7 V and 23.2% EL external quantum efficiency, a record value for near-infrared perovskite LED, as well as 15.23% PV efficiency, among the highest value for nanocrystal perovskite solar cells. The PV-EL performance is well in line with the reciprocity relation. These all-solution-processed PV-LED devices open up viable routes to a variety of advanced applications, from touchless interactive screens to energy harvesting displays and data communication.
Keyphrases
- light emitting
- solar cells
- highly efficient
- perovskite solar cells
- room temperature
- high efficiency
- energy transfer
- drug delivery
- high throughput
- genome wide
- molecular dynamics
- gene expression
- dna methylation
- cancer therapy
- machine learning
- solid phase extraction
- deep learning
- gas chromatography mass spectrometry
- data analysis
- solid state
- liquid chromatography