Organic–inorganic hybrid perovskite quantum dots for light-emitting diodes

2018 ◽  
Vol 6 (18) ◽  
pp. 4831-4841 ◽  
Author(s):  
Wei Deng ◽  
Huan Fang ◽  
Xiangcheng Jin ◽  
Xiujuan Zhang ◽  
Xiaohong Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Narrow Band ◽  
Optoelectronic Properties ◽  
Next Generation ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Hybrid Perovskite ◽  
Perovskite Quantum Dots

Organic–inorganic hybrid perovskite (CH3NH3PbX3, X = Cl, Br, or I) quantum dots with superior optoelectronic properties, including bright, colour-tunable, narrow-band photoluminescence and high photoluminescence quantum efficiency, are regarded as ideal materials for next-generation displays.

scholarly journals Perovskite Light-Emitting Devices with Doped Hole Transporting Layer

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1670
Author(s):  
Zhiwei Peng ◽  
Yuhan Gao ◽  
Guohua Xie
Keyword(s):  
Quantum Dots ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Control Device ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Improvement Factor ◽  
Hole Transporting ◽  
Perovskite Quantum Dots

Perovskite quantum dots (PQDs) have drawn global attention in recent years and have been used in a range of semiconductor devices, especially for light-emitting diodes (LEDs). However, because of the nature of low-conductive ligands of PQDs and surface and bulk defects in the devices, charge injection and transport should be carefully managed in order to maximize the electroluminescent performances. In this study, we employed three p-dopants, i.e., 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ), 1,3,4,5,7,8-hexafluoro-11,11,12,12-tetracyanonaphtho-2,6-quinodimethane (F6-TCNNQ), and 11,11,12,12-tetracyanonaphtho-2,6-quinodimethane (TCNH14), respectively doped into the commonly used hole transporting layer (HTL) poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA). Compared with the devices with the neat PTAA, those with the doped PTAA as the HTLs achieved the improved electroluminescent performances. In particular, the device with the strong oxidant F4-TCNQ exhibited an improvement factor of 27% in the peak external quantum efficiency compared with the control device with the neat PTAA. The capacitance and transient electroluminescent measurements were carried out to identify the imperceptible interactions in the doped HTL and at the interface between the HTL and PQDs.

Amine-Free Synthesis of Cesium Lead Halide Perovskite Quantum Dots for Efficient Light-Emitting Diodes

2016 ◽  
Vol 26 (47) ◽  
pp. 8757-8763 ◽  
Author(s):  
Emre Yassitepe ◽  
Zhenyu Yang ◽  
Oleksandr Voznyy ◽  
Younghoon Kim ◽  
Grant Walters ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

Effects of thermal treatment on organic-inorganic hybrid perovskite films and luminous efficiency of light-emitting diodes

2016 ◽  
Vol 16 (9) ◽  
pp. 1069-1074 ◽  
Author(s):  
Young-Hoon Kim ◽  
Himchan Cho ◽  
Jin Hyuck Heo ◽  
Sang Hyuk Im ◽  
Tae-Woo Lee
Keyword(s):  
Thermal Treatment ◽  
Light Emitting Diodes ◽  
Luminous Efficiency ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Hybrid Perovskite
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