Inorganic perovskite engineering through incorporation of a carboxylic acid containing ligand for performance enhancement in perovskite light-emitting diodes

2019 ◽  
Vol 7 (45) ◽  
pp. 14141-14147
Author(s):  
Jiayue Chen ◽  
Xiaojie Chen ◽  
Dongyu Ma ◽  
Guangfu Li ◽  
Juan Zhao ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Light Emitting Diodes ◽  
Performance Enhancement ◽  
Device Performance ◽  
Light Emitting ◽  
Inorganic Perovskite ◽  
Engineering Strategy

A perovskite engineering strategy of incorporating a carboxylic acid containing ligand is proposed to enhance device performance of perovskite LEDs.

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,...

Pyridine-Incorporated Dihexylquaterthiophene: A Novel Blue Emitter for Organic Light Emitting Diodes (OLEDs)

2012 ◽  
Vol 65 (9) ◽  
pp. 1244 ◽  
Author(s):  
Prashant Sonar ◽  
Sonsoles Garcia Santamaria ◽  
Ting Ting Lin ◽  
Alan Sellinger ◽  
Henk Bolink
Keyword(s):  
Light Emitting Diodes ◽  
Blue Emission ◽  
Organic Light Emitting Diodes ◽  
High Yield ◽  
Device Performance ◽  
Host Matrix ◽  
Maximum Brightness ◽  
Light Emitting ◽  
Organic Light ◽  
Processing Techniques

The synthesis and characterisation of 2,5-bis(5′-hexyl-[2,2′-bithiophen]-5-yl)pyridine (Th4PY) and its use as a blue emitter in organic light emitting diodes (OLEDs) is reported. Th4PY was synthesised in high yield using a straightforward Suzuki coupling route with commercially available starting materials. As Th4PY is both soluble and has low molecular weight, blue OLEDs were fabricated using both spin-coating and vacuum deposition thin film processing techniques to study the effect of processing on device performance. OLED devices using a spin-coated layer consisting of 4′,4′′-tris(N-carbazolyl)triphenylamine (TCTA) and 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) as a host matrix together with Th4PY as emitter exhibited highly efficient sky-blue emission with a low turn-on voltage of 3 V, a maximum brightness close to 15000 cd m–2 at 8 V, and a maximum luminous efficiency of 7.4 cd A–1 (6.3 lm W–1) with CIE coordinates of x = 0.212, y = 0.320. The device performance characteristics are compared using various matrices and processing techniques. The promising sky-blue OLED performance, solution processability, and ambient stability make Th4PY a promising blue emitter for application in OLEDs.

Optical performance enhancement of chip-on-board light-emitting diodes through ionic wind patterning

2017 ◽  
Vol 56 (12) ◽  
pp. 3397 ◽  
Author(s):  
Jiading Wu ◽  
Jingcao Chu ◽  
Zefeng Zhang ◽  
Jiahui Huang ◽  
Huai Zheng ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Performance Enhancement ◽  
Ionic Wind ◽  
Optical Performance ◽  
Light Emitting

High-Performance Solution Processed Red Hyperfluorescent OLEDs Based on Cibalackrot

2022 ◽  
Author(s):  
Nicholle R. Wallwork ◽  
Masashi Mamada ◽  
Atul Shukla ◽  
Sarah K. M. McGregor ◽  
Chihaya Adachi ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Device Performance ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

Hyperfluorescent organic light-emitting diodes (OLEDs) has allowed remarkable device performances to be achieved using fluorescent emitters. Superior device performance has been realised using thermally evaporated emissive layers. However, for future...

Structure optimization of perovskite quantum dot light-emitting diodes

Nanoscale ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 5021-5029 ◽  
Author(s):  
Qasim Khan ◽  
Alagesan Subramanian ◽  
Guannan Yu ◽  
Khan Maaz ◽  
Delong Li ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Structure Optimization ◽  
Ambient Atmosphere ◽  
Light Emitting ◽  
Inorganic Perovskite

Although all-inorganic perovskite light emitting diodes (PeLED) have satisfactory stability under an ambient atmosphere, producing devices with high performance is challenging.

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