Efficient pure-red perovskite light-emitting diodes using dual-Lewis-base molecules for interfacial modification

2021 ◽  
Author(s):  
Rui Yang ◽  
Yanqing Li ◽  
Minglei Guo ◽  
Xiao-Yi Cai ◽  
Jianxin Tang
Keyword(s):  
Light Emitting Diodes ◽  
Low Cost ◽  
Lewis Base ◽  
Color Purity ◽  
Light Emitting ◽  
Full Color ◽  
Color Displays ◽  
Interfacial Modification ◽  
High Color Purity

Perovskite light-emitting diodes (PeLEDs) are promising for full-color displays due to high color purity, low-cost and solution processability. However, pure-red PeLEDs still lag behind their green and deep-red counterparts in...

Solution Processed Fabrication of Perovskite Light-Emitting Diodes: Towards Low Cost and Commercial Applications

2021 ◽  
Author(s):  
Jianfeng Zhang ◽  
Bin Wei ◽  
Lin Wang ◽  
Xuyong Yang
Keyword(s):  
Light Emitting Diodes ◽  
Low Cost ◽  
Color Purity ◽  
Color Gamut ◽  
Light Emitting ◽  
Metal Halide Perovskite ◽  
Wide Color Gamut ◽  
Halide Perovskite ◽  
Commercial Applications ◽  
High Color Purity

Metal halide perovskite light-emitting diodes (PeLEDs) have emerged as one of the most promising candidates for next-generation high-resolution displays, due to their wide color gamut, high color purity and low-cost...

High performance red phosphorescent organic electroluminescent devices with characteristic mechanisms by utilizing terbium or gadolinium complexes as sensitizers

2017 ◽  
Vol 5 (8) ◽  
pp. 2066-2073 ◽  
Author(s):  
Rongzhen Cui ◽  
Weiqiang Liu ◽  
Liang Zhou ◽  
Xuesen Zhao ◽  
Yunlong Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Electroluminescent Devices ◽  
Light Emitting ◽  
Organic Light ◽  
Gadolinium Complexes ◽  
Organic Electroluminescent ◽  
High Color Purity

High performance sensitized organic light-emitting diodes with high color purity were obtained by utilizing terbium or gadolinium complexes as sensitizers.

65‐3: Quantum Dot Light‐emitting Diodes with High Color Purity RGB Cadmium‐Free Quantum Dots

2021 ◽  
Vol 52 (1) ◽  
pp. 953-956
Author(s):  
Tatsuya Ryowa ◽  
Yusuke Sakakibara ◽  
Tadashi Kobashi ◽  
Keisuke Kitano ◽  
Masaya Ueda ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Color Purity ◽  
Light Emitting ◽  
High Color Purity

Halide Perovskite Based Light-emitting Diodes: A Scaling Up Perspective

2021 ◽  
Author(s):  
Ting Zhang ◽  
Lin Wang ◽  
Lingmei Kong ◽  
Chengxi Zhang ◽  
Haiyong He ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Low Cost ◽  
Scaling Up ◽  
Color Gamut ◽  
High Definition ◽  
Light Emitting ◽  
Metal Halide Perovskite ◽  
Wide Color Gamut ◽  
Halide Perovskite ◽  
High Color Purity

Metal halide perovskite light-emitting diodes (PeLEDs) have aroused extensive attention due to their high color purity, wide color gamut, low-cost solution processability, showing great potential for application in next-generation high-definition...

scholarly journals Structural and spectral dynamics of single-crystalline Ruddlesden-Popper phase halide perovskite blue light-emitting diodes

2020 ◽  
Vol 6 (4) ◽  
pp. eaay4045 ◽  
Author(s):  
Hong Chen ◽  
Jia Lin ◽  
Joohoon Kang ◽  
Qiao Kong ◽  
Dylan Lu ◽  
...  
Keyword(s):  
Density Functional ◽  
Light Emitting Diodes ◽  
Degradation Mechanism ◽  
Density Functional Theory Calculation ◽  
Underlying Mechanism ◽  
Color Purity ◽  
Spectral Evolution ◽  
Heat Management ◽  
Light Emitting ◽  
High Color Purity

Achieving perovskite-based high–color purity blue-emitting light-emitting diodes (LEDs) is still challenging. Here, we report successful synthesis of a series of blue-emissive two-dimensional Ruddlesden-Popper phase single crystals and their high–color purity blue-emitting LED demonstrations. Although this approach successfully achieves a series of bandgap emissions based on the different layer thicknesses, it still suffers from a conventional temperature-induced device degradation mechanism during high-voltage operations. To understand the underlying mechanism, we further elucidate temperature-induced device degradation by investigating the crystal structural and spectral evolution dynamics via in situ temperature-dependent single-crystal x-ray diffraction, photoluminescence (PL) characterization, and density functional theory calculation. The PL peak becomes asymmetrically broadened with a marked intensity decay, as temperature increases owing to [PbBr6]4− octahedra tilting and the organic chain disordering, which results in bandgap decrease. This study indicates that careful heat management under LED operation is a key factor to maintain the sharp and intense emission.

High efficiency and high color purity blue-emitting NaSrBO3:Ce3+ phosphor for near-UV light-emitting diodes

2011 ◽  
Vol 21 (19) ◽  
pp. 6869 ◽  
Author(s):  
Wei-Ren Liu ◽  
Chien-Hao Huang ◽  
Chih-Pin Wu ◽  
Yi-Chen Chiu ◽  
Yao-Tsung Yeh ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Uv Light ◽  
Color Purity ◽  
Light Emitting ◽  
High Color Purity
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