Multifunctional Naphthol Sulfonic Salt Incorporated in Lead-Free 2D Tin Halide Perovskite for Red Light-Emitting Diodes

ACS Photonics ◽  
2020 ◽  
Vol 7 (8) ◽  
pp. 1915-1922
Author(s):  
Congcong Gao ◽  
Yuanzhi Jiang ◽  
Changjiu Sun ◽  
Jingrui Han ◽  
Tingwei He ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Red Light ◽  
Lead Free ◽  
Light Emitting ◽  
Halide Perovskite

Quasi-2D lead-free halide perovskite using superalkali cations for red-light-emitting diodes

Nanoscale ◽  
2021 ◽  
Author(s):  
Tingwei Zhou ◽  
Anlong Kuang
Keyword(s):  
Light Emitting Diodes ◽  
Red Light ◽  
Lead Free ◽  
Two Dimensional ◽  
Light Emitting ◽  
Halide Perovskites ◽  
Halide Perovskite

Two dimensional halide perovskites have attracted intense attention, but there is no study to consider the quasi-2D lead-free perovskites with superalkali cations as potential emitting materials. Herein, the quasi-2D [C6H5(CH2)2NH3]2H5O2Sn2Br7...

Highly luminescent and stable lead-free cesium copper halide perovskite powders for UV-pumped phosphor-converted light-emitting diodes

2020 ◽  
Vol 8 (6) ◽  
pp. 768 ◽  
Author(s):  
Lingling Xie ◽  
Bingkun Chen ◽  
Fa Zhang ◽  
Ziheng Zhao ◽  
Xinxin Wang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Lead Free ◽  
Copper Halide ◽  
Light Emitting ◽  
Halide Perovskite

Two-dimensional lead-free halide perovskite materials and devices

2019 ◽  
Vol 7 (41) ◽  
pp. 23563-23576 ◽  
Author(s):  
Jie Wang ◽  
Jianchao Dong ◽  
Feifei Lu ◽  
Chenglin Sun ◽  
Qichun Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Emitting Diodes ◽  
Lead Free ◽  
Two Dimensional ◽  
Light Emitting ◽  
Perovskite Materials ◽  
Halide Perovskite

The progresses, challenges, and perspectives on emerging 2D lead-free halide perovskite materials and relevant light-emitting diodes/solar cells have been elaborately summarized.

Ammonium acetate passivated CsPbI3 perovskite nanocrystals for efficient red light-emitting diodes

Nanoscale ◽  
2020 ◽  
Vol 12 (14) ◽  
pp. 7712-7719 ◽  
Author(s):  
Yongsheng Zhu ◽  
Jun Zhao ◽  
Gang Yang ◽  
Xiumei Xu ◽  
Gencai Pan
Keyword(s):  
Ammonium Acetate ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Optoelectronic Properties ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Halide Perovskite ◽  
Lead Halide

Lead halide perovskite nanocrystals (PNCs) have very recently emerged as promising emitters for their superior optoelectronic properties.

scholarly journals Color-pure red light-emitting diodes based on two-dimensional lead-free perovskites

2020 ◽  
Vol 6 (42) ◽  
pp. eabb0253
Author(s):  
Fanglong Yuan ◽  
Xiaopeng Zheng ◽  
Andrew Johnston ◽  
Ya-Kun Wang ◽  
Chun Zhou ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Crystallization Rate ◽  
Lead Free ◽  
Forming Process ◽  
Information Display ◽  
Light Emitting ◽  
Wide Color Gamut ◽  
Display Technology

It remains a central challenge to the information display community to develop red light-emitting diodes (LEDs) that meet demanding color coordinate requirements for wide color gamut displays. Here, we report high-efficiency, lead-free (PEA)2SnI4 perovskite LEDs (PeLEDs) with color coordinates (0.708, 0.292) that fulfill the Rec. 2100 specification for red emitters. Using valeric acid (VA)—which we show to be strongly coordinated to Sn2+—we slow the crystallization rate of the perovskite, improving the film morphology. The incorporation of VA also protects tin from undesired oxidation during the film-forming process. The improved films and the reduced Sn4+ content enable PeLEDs with an external quantum efficiency of 5% and an operating half-life exceeding 15 hours at an initial brightness of 20 cd/m2. This work illustrates the potential of Cd- and Pb-free PeLEDs for display technology.

scholarly journals Understanding the luminescent nature of organic radicals for efficient doublet emitters and pure-red light-emitting diodes

2020 ◽  
Vol 19 (11) ◽  
pp. 1224-1229 ◽  
Author(s):  
Alim Abdurahman ◽  
Timothy J. H. Hele ◽  
Qinying Gu ◽  
Jiangbin Zhang ◽  
Qiming Peng ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Red Light ◽  
Organic Radicals ◽  
Light Emitting

Recent progress on defect modulation for highly efficient metal halide perovskite light-emitting diodes

2021 ◽  
Vol 22 ◽  
pp. 100946
Author(s):  
Le Ma ◽  
Boning Han ◽  
Fengjuan Zhang ◽  
Leimeng Xu ◽  
Tao Fang ◽  
...  
Keyword(s):  
Recent Progress ◽  
Light Emitting Diodes ◽  
Metal Halide ◽  
Light Emitting ◽  
Highly Efficient ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

Efficient organic manganese (II) bromide green-light-emitting diodes enabled by manipulating hole and electron transport layer

2021 ◽  
Author(s):  
Hyunsik Im ◽  
Atanu Jana ◽  
Vijaya Gopalan Sree ◽  
QIANKAI BA ◽  
Seong Chan Cho ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Green Light ◽  
Transport Layer ◽  
Lead Free ◽  
Electron Transport Layer ◽  
Flat Panel Displays ◽  
Flat Panel ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Light Emitting Devices

Lead-free, non-toxic transition metal-based phosphorescent organic–inorganic hybrid (OIH) compounds are promising for next-generation flat-panel displays and solid-state light-emitting devices. In the present study, we fabricate highly efficient phosphorescent green-light-emitting diodes...

Efficient All-inorganic Perovskite Light-emitting Diodes Enabled by Manipulating Crystal Orientation

2021 ◽  
Author(s):  
Wenjing Feng ◽  
Kebin Lin ◽  
Wenqiang Li ◽  
Xiangtian Xiao ◽  
Jianxun Lu ◽  
...  
Keyword(s):  
Active Layer ◽  
Crystal Orientation ◽  
Light Emitting Diodes ◽  
Metal Halide ◽  
Device Performance ◽  
Light Emitting ◽  
Inorganic Perovskite ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

Metal halide perovskite light-emitting diodes (PeLEDs) are promising in lighting and display application, and the corresponding device performance is highly dependent on the film quality of the active layer. However,...

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