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- Title
Improved efficiency of red perovskite quantum dots-based light-emitting diodes by thickness tuning of PEDOT:PSS.
- Authors
Zhou, Xin; Tong, Xuan; Li, Xiaolong; Min, Yonggang; Qian, Yannan
- Abstract
To balance the carrier injection, adjusting the thickness of PEDOT:PSS through a simple water diluting was a feasible strategy to improve the efficiency of CsPbBrI2 perovskite quantum dots light-emitting diode (PeLED). CsPbBrI2 perovskite quantum dots (PeQDs) with a uniform and monodisperse cubic phase exhibited a red light at 649 nm and with CIE of (0.697, 0.302). Based on PEDOT:PSS film with the thickness of 40 nm, a CsPbBrI2 PeLED displayed 4.3-fold external quantum efficiency improvement up to 3.44%, and 22.3-fold enhancement in luminance, which was attributed to an effective hole transport and an increased electrical conductivity.
- Subjects
PEROVSKITE; QUANTUM dots; ELECTRIC conductivity; LIGHT emitting diodes; QUANTUM efficiency; LUMINANCE (Photometry)
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 10, p7349
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-07834-5