Blue-Light-Emitting Photostable Hybrid Films for High-Efficiency Large-Area Light Converter and Photonic Applications

2018 ◽  
Vol 10 (51) ◽  
pp. 44768-44775 ◽  
Author(s):  
Jung-Soo Kang ◽  
Jun-Gill Kang ◽  
Youngku Sohn ◽  
Kam Tong Leung
Keyword(s):  
Blue Light ◽  
High Efficiency ◽  
Hybrid Films ◽  
Large Area ◽  
Light Emitting

scholarly journals Efficient and large-area all vacuum-deposited perovskite light-emitting diodes via spatial confinement

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Peipei Du ◽  
Jinghui Li ◽  
Liang Wang ◽  
Liang Sun ◽  
Xi Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
Large Scale ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Scale Production ◽  
Nonradiative Recombination ◽  
Large Area ◽  
Spatial Confinement ◽  
Light Emitting ◽  
Large Scale Production

AbstractWith rapid advances of perovskite light-emitting diodes (PeLEDs), the large-scale fabrication of patterned PeLEDs towards display panels is of increasing importance. However, most state-of-the-art PeLEDs are fabricated by solution-processed techniques, which are difficult to simultaneously achieve high-resolution pixels and large-scale production. To this end, we construct efficient CsPbBr3 PeLEDs employing a vacuum deposition technique, which has been demonstrated as the most successful route for commercial organic LED displays. By carefully controlling the strength of the spatial confinement in CsPbBr3 film, its radiative recombination is greatly enhanced while the nonradiative recombination is suppressed. As a result, the external quantum efficiency (EQE) of thermally evaporated PeLED reaches 8.0%, a record for vacuum processed PeLEDs. Benefitting from the excellent uniformity and scalability of the thermal evaporation, we demonstrate PeLED with a functional area up to 40.2 cm2 and a peak EQE of 7.1%, representing one of the most efficient large-area PeLEDs. We further achieve high-resolution patterned perovskite film with 100 μm pixels using fine metal masks, laying the foundation for potential display applications. We believe the strategy of confinement strength regulation in thermally evaporated perovskites provides an effective way to process high-efficiency and large-area PeLEDs towards commercial display panels.

Nonblinking Quantum-Dot-Based Blue Light-Emitting Diodes with High Efficiency and a Balanced Charge-Injection Process

ACS Photonics ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 939-946 ◽  
Author(s):  
Qingli Lin ◽  
Lei Wang ◽  
Zhaohan Li ◽  
Huaibin Shen ◽  
Lijun Guo ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Blue Light ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Charge Injection ◽  
Light Emitting ◽  
Injection Process

Recent Progress in High-Efficiency Blue-Light-Emitting Materials for Organic Light-Emitting Diodes

2017 ◽  
Vol 27 (13) ◽  
pp. 1603007 ◽  
Author(s):  
Yirang Im ◽  
Seong Yong Byun ◽  
Ji Han Kim ◽  
Dong Ryun Lee ◽  
Chan Seok Oh ◽  
...  
Keyword(s):  
Blue Light ◽  
Recent Progress ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light

High-efficiency pyrene-based blue light emitting diodes: aggregation suppression using a calixarene 3D-scaffold

2012 ◽  
Vol 48 (42) ◽  
pp. 5106 ◽  
Author(s):  
Khai Leok Chan ◽  
Jacelyn Pui Fong Lim ◽  
Xiaohui Yang ◽  
Ananth Dodabalapur ◽  
Ghassan E. Jabbour ◽  
...  
Keyword(s):  
Blue Light ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
3D Scaffold ◽  
Light Emitting

High-efficiency blue light-emitting electrophosphorescent device with conjugated polymers as the host

2006 ◽  
Vol 88 (5) ◽  
pp. 051116 ◽  
Author(s):  
Xiuju Zhang ◽  
Changyun Jiang ◽  
Yueqi Mo ◽  
Yunhua Xu ◽  
Huahong Shi ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Blue Light ◽  
High Efficiency ◽  
Light Emitting

High power and high efficiency blue light emitting diode on freestanding semipolar (101¯1¯) bulk GaN substrate

2007 ◽  
Vol 90 (23) ◽  
pp. 233504 ◽  
Author(s):  
Hong Zhong ◽  
Anurag Tyagi ◽  
Natalie N. Fellows ◽  
Feng Wu ◽  
Roy B. Chung ◽  
...  
Keyword(s):  
Blue Light ◽  
High Power ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Bulk Gan

Colloidal Synthesis of Ternary Copper Halide Nanocrystals for High-Efficiency Deep-Blue Light-Emitting Diodes with a Half-Lifetime above 100 h

Nano Letters ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 3568-3576 ◽  
Author(s):  
Lintao Wang ◽  
Zhifeng Shi ◽  
Zhuangzhuang Ma ◽  
Dongwen Yang ◽  
Fei Zhang ◽  
...  
Keyword(s):  
Blue Light ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Colloidal Synthesis ◽  
Copper Halide ◽  
Light Emitting ◽  
Deep Blue

High-Efficiency Si-Gel-Encapsulated GaN-Based Photonic Crystal Blue Light-Emitting Diodes

2008 ◽  
Vol 52 (4) ◽  
pp. 1026-1030
Author(s):  
Sun-Kyung Kim ◽  
Hyun Kyong Cho ◽  
Junho Jang ◽  
Jeong Soo Lee ◽  
Yong-Hee Lee
Keyword(s):  
Photonic Crystal ◽  
Blue Light ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting

Driving and Application of Blue Light Organic Light Emitting Devices

2019 ◽  
Vol 11 (5) ◽  
pp. 711-717
Author(s):  
Hongbo Liu ◽  
Minghui Liu ◽  
Lin Cong ◽  
Lizhong Wang ◽  
Tao Huang ◽  
...  
Keyword(s):  
Blue Light ◽  
High Efficiency ◽  
Low Voltage ◽  
Red Light ◽  
Portable Devices ◽  
Driving Voltage ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

The DPVBi (4,4′-bis(2,2-diphenylvinyl-1,1′-biphenyl) is a blue-light organic fluorescence doped material, which can be used as a hole barrier layer or a luminescent layer for fabricating organic light-emitting devices. A blue light device with stable color stability and high efficiency was prepared by co-doping blue light dye DPVBi and red light dye DCJTB as light-emitting layer. In order to prevent the infiltration of O2 and moisture inside the device from affecting the luminescence lifetime of the device, the device was encapsulated by atomic layer deposition. Since the driving voltage of the organic light-emitting device is generally above 5 V and the power consumption is low, in order to facilitate driving with a low voltage, a boost driving circuit based on the XL6009 chip was designed. The driver of the fabricated blue-light device was tested. The results showed that circuit had low-voltage drive characteristics and could be widely used in small toys, lighting, and portable devices. Through the test to achieve the desired goal, the requirements of low voltage and low energy consumption were realized, and the life of the light-emitting device can be tested, which has certain practicability and reference value.

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