In-situ Cadmium Surface Passivation of Perovskite Nanocrystals for Blue LEDs

2021 ◽  
Author(s):  
Woo Hyeon Jeong ◽  
Zhongkai Yu ◽  
Luca Gregori ◽  
Jonghee Yang ◽  
Su Ryong Ha ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diodes ◽  
Surface Passivation ◽  
Low Cost ◽  
Color Purity ◽  
Next Generation ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Excellent Color

Next-generation electroluminescent displays require efficient and stable red, green and blue light-emitting diodes (LEDs) with low cost, excellent color purity and flexibility, for which perovskites-based LEDs (PeLEDs) are a promising...

In Situ-Fabricated Perovskite Nanocrystals for Deep-Blue Light-Emitting Diodes

2020 ◽  
Vol 11 (24) ◽  
pp. 10348-10353
Author(s):  
Wenjie Xu ◽  
Ruiqi Ji ◽  
Pinlei Liu ◽  
Lu Cheng ◽  
Lin Zhu ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Deep Blue

scholarly journals Device Modeling of Quantum Dot–Organic Light Emitting Diodes for High Green Color Purity

2021 ◽  
Vol 11 (6) ◽  
pp. 2828
Author(s):  
Byoung-Seong Jeong
Keyword(s):  
Quantum Dot ◽  
Emission Spectrum ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Wavelength Band ◽  
Light Emitting ◽  
Green Color ◽  
Organic Light

In this study, the optimal structure for obtaining high green color purity was investigated by modeling quantum dot (QD)–organic light-emitting diodes (OLED). It was found that even if the green quantum dot (G-QD) density in the G-QD layer was 30%, the full width at half maximum (FWHM) in the green wavelength band could be minimized to achieve a sharp emission spectrum, but it was difficult to completely block the blue light leakage with the G-QD layer alone. This blue light leakage problem was solved by stacking a green color filter (G-CF) layer on top of the G-QD layer. When G-CF thickness 5 μm was stacked, blue light leakage was blocked completely, and the FWHM of the emission spectrum in the green wavelength band was minimized, resulting in high green color purity. It is expected that the overall color gamut of QD-OLED can be improved by optimizing the device that shows such excellent green color purity.

Suppression of Halide Migration and Immobile Ionic Surface Passivation for Blue Perovskite Light-Emitting Diodes

2022 ◽  
Author(s):  
Chan Beom Park ◽  
Yun Seop Shin ◽  
Yung Jin Yoon ◽  
Hyungsu Jang ◽  
Jung Geon Son ◽  
...  
Keyword(s):  
Optical Properties ◽  
Light Emitting Diodes ◽  
Surface Passivation ◽  
Optoelectronic Properties ◽  
Light Emitting ◽  
Perovskite Nanocrystals

Cs-based perovskite nanocrystals (PeNCs) have been considered to be superb emitters for perovskite light-emitting diodes (PeLEDs) due to their remarkable optoelectronic properties. Still, poor optical properties are mainly attributed to...

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...

Engineering Color-Stable Blue Light-Emitting Diodes with Lead Halide Perovskite Nanocrystals

2019 ◽  
Vol 11 (24) ◽  
pp. 21655-21660 ◽  
Author(s):  
Stefan T. Ochsenbein ◽  
Franziska Krieg ◽  
Yevhen Shynkarenko ◽  
Gabriele Rainò ◽  
Maksym V. Kovalenko
Keyword(s):  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Halide Perovskite ◽  
Lead Halide

51.2: Invited Paper: Efficient Light‐emitting Diodes Based on In‐situ Fabricated Perovskite Nanocrystals

2019 ◽  
Vol 50 (S1) ◽  
pp. 567-567
Author(s):  
Dengbao Han ◽  
Muhammad Imran ◽  
Xin Zhang ◽  
Chenhui Wang ◽  
Shuai Chang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Perovskite Nanocrystals

Enhanced stability and performance of light-emitting diodes based on in situ fabricated FAPbBr3 nanocrystals via ligand compensation with n-octylphosphonic acid

2020 ◽  
Vol 8 (29) ◽  
pp. 9936-9944 ◽  
Author(s):  
Yanan Wu ◽  
Lihui Liu ◽  
Wei Wang ◽  
Wenzhu Zhang ◽  
Hongtao Yu ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Device Efficiency ◽  
Improved Stability ◽  
And Performance ◽  
Enhanced Stability

Dual ligands are introduced for the in situ fabrication of perovskite nanocrystals, leading to higher crystallinity, improved stability and device efficiency.

Exciton engineering based on star-shaped blue thermally activated delayed fluorescence emitters for efficient white organic light-emitting diodes

2021 ◽  
Author(s):  
Hui Xu ◽  
Zhe Li ◽  
Chunbo Duan ◽  
Ying Li ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Environmental Sustainability ◽  
Light Emitting Diodes ◽  
Low Cost ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Next Generation ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light

White organic light emitting diodes (OLED) are promising as the next-generation lighting sources, for which thermally activated delayed fluorescence (TADF) materials provides an alternative feature low cost and environmental sustainability,...

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