Facile Assembly of High-Quality Organic-Inorganic Hybrid Perovskite Quantum Dot Thin Films for Bright Light-Emitting Diodes

2018 ◽  
Vol 28 (11) ◽  
pp. 1705189 ◽  
Author(s):  
Xiangcheng Jin ◽  
Xiujuan Zhang ◽  
Huan Fang ◽  
Wei Deng ◽  
Xiuzhen Xu ◽  
...  
Keyword(s):  
Thin Films ◽  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Bright Light ◽  
High Quality ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Hybrid Perovskite

scholarly journals Organic–inorganic hybrid perovskite quantum dot light-emitting diodes using a graphene electrode and modified PEDOT:PSS

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20931-20940 ◽  
Author(s):  
Qing Zhang ◽  
Hongtao Yu ◽  
Ziwei Liu ◽  
Yao Lu ◽  
Danqing Ye ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Device Performance ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Graphene Electrode ◽  
Hybrid Perovskite

A graphene electrode together with modified PEDOT:PSS was first applied into perovskite quantum dot light-emitting diodes to improve the device performance.

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

scholarly journals Perovskite-molecule composite thin films for efficient and stable light-emitting diodes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Heyong Wang ◽  
Felix Utama Kosasih ◽  
Hongling Yu ◽  
Guanhaojie Zheng ◽  
Jiangbin Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Degradation Mechanism ◽  
Deep Understanding ◽  
Significant Progress ◽  
High Quality ◽  
Composite Thin Films ◽  
Light Emitting

AbstractAlthough perovskite light-emitting diodes (PeLEDs) have recently experienced significant progress, there are only scattered reports of PeLEDs with both high efficiency and long operational stability, calling for additional strategies to address this challenge. Here, we develop perovskite-molecule composite thin films for efficient and stable PeLEDs. The perovskite-molecule composite thin films consist of in-situ formed high-quality perovskite nanocrystals embedded in the electron-transport molecular matrix, which controls nucleation process of perovskites, leading to PeLEDs with a peak external quantum efficiency of 17.3% and half-lifetime of approximately 100 h. In addition, we find that the device degradation mechanism at high driving voltages is different from that at low driving voltages. This work provides an effective strategy and deep understanding for achieving efficient and stable PeLEDs from both material and device perspectives.

scholarly journals Highly stable hybrid perovskite light-emitting diodes based on Dion-Jacobson structure

2019 ◽  
Vol 5 (8) ◽  
pp. eaaw8072 ◽  
Author(s):  
Yuequn Shang ◽  
Yuan Liao ◽  
Qi Wei ◽  
Ziyu Wang ◽  
Bo Xiang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
First Principles Calculations ◽  
Bridging Ligands ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Hybrid Perovskite ◽  
Halide Perovskites ◽  
Stable Hybrid ◽  
Poor Stability

Organic-inorganic hybrid halide perovskites are emerging as promising materials for next-generation light-emitting diodes (LEDs). However, the poor stability of these materials has been the main obstacle challenging their application. Here, we performed first-principles calculations, revealing that the molecule dissociation energy of Dion-Jacobson (DJ) structure using 1,4-bis(aminomethyl)benzene molecules as bridging ligands is two times higher than the typical Ruddlesden-Popper (RP) structure based on phenylethylammonium ligands. Accordingly, LEDs based on the DJ structure show a half-lifetime over 100 hours, which is almost two orders of magnitude longer compared with those based on RP structural quasi–two-dimensional perovskite. To the best of our knowledge, this is the longest lifetime reported for all organic-inorganic hybrid perovskites operating at the current density, giving the highest external quantum efficiency (EQE) value. In situ tracking of the film composition in operation indicates that the DJ structure was maintained well after continuous operation under an electric field.

Quantum-dot blue light emitting diodes utilizing organic/inorganic hybrid structures

2014 ◽  
Vol 54 (2S) ◽  
pp. 02BC03
Author(s):  
Feifei Wu ◽  
Lian Hu ◽  
Bingpo Zhang ◽  
Ruifeng Li ◽  
Huizhen Wu
Keyword(s):  
Quantum Dot ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Hybrid Structures ◽  
Inorganic Hybrid ◽  
Light Emitting

scholarly journals Optical Energy Losses in Organic-Inorganic Hybrid Perovskite Light-Emitting Diodes

2018 ◽  
Vol 6 (17) ◽  
pp. 1800667 ◽  
Author(s):  
Xiao-Bo Shi ◽  
Yuan Liu ◽  
Zhongcheng Yuan ◽  
Xiao-Ke Liu ◽  
Yanfeng Miao ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Energy Losses ◽  
Inorganic Hybrid ◽  
Optical Energy ◽  
Light Emitting ◽  
Hybrid Perovskite

Bandgap tunable Zn1−xMgxO thin films as electron transport layers for high performance quantum dot light-emitting diodes

2017 ◽  
Vol 5 (19) ◽  
pp. 4724-4730 ◽  
Author(s):  
Shujie Wang ◽  
Yimeng Guo ◽  
Dandan Feng ◽  
Ling Chen ◽  
Yan Fang ◽  
...  
Keyword(s):  
Thin Films ◽  
Electron Transport ◽  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Charge Carriers ◽  
Light Emitting

ZMO, as an ETL, effectively balanced the injection of charge carriers into the quantum dot layer for a higher performance of QLEDs.

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