Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 15, Pages 13236-13243Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b01684
Keywords
lithium doping; TiO2 nanoparticles; Fermi-level tuning; CsPbBr3 quantum dots; inverted light-emitting diodes; charge carrier balance
Funding
- Chinese Academy of Sciences President's International Fellowship for Postdoctoral Researchers [2016PM018]
- National Natural Science Foundation of China [61504026, 21433013]
- National Key Research and Development Program of China [2016YFB0100100]
- CAS DOE Joint Research Program [121E32KYSB20150004, 121E32KYSB20160032]
Ask authors/readers for more resources
All-inorganic perovskite light-emitting diode (PeLED) has a high stability in ambient atmosphere, but it is a big challenge to achieve high performance of the device. Basically, device design, control of energy-level alignment, and reducing the energy barrier between adjacent layers in the between the hole transport layer and ETL, leading to superior nanopartides as the electron transport layer (ETL). The optimal lithium doping balances the charge carrier injection Exeiton architecture of PeLED are important factors to achieve high efficiency. In this study, we report a CsPbBr3-based PeLED with an inverted architecture using lithium-doped TiO2 device performance. The device exhibits a current efficiency of 3 cd A(-1), a luminance efficiency of 2210 cd m(-2), and a low turn-on voltage of 2.3 V. The turn-on voltage is one of the lowest values among reported CsPbBr3-based PeLEDs. A 7-fold increase in device efficiencies has been obtained for lithium-doped TiO2 compared to that for undoped TiO2-based devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available