Results 31 to 40 of about 482 (171)

Advances and Challenges in Heavy-Metal-Free InP Quantum Dot Light-Emitting Diodes

Micromachines, 2022
Light-emitting diodes based on colloidal quantum dots (QLEDs) show a good prospect in commercial application due to their narrow spectral linewidths, wide color range, excellent luminance efficiency, and long operating lifetime.
Xiaojie Jiang, Zhen Fan, Li Luo, Lishuang Wang   +3 more
doaj   +1 more source

Highly Efficient All-Solution-Processed Quantum Dot Light-Emitting Diodes Using MoO_x Nanoparticle Hole Injection Layer

Nanomaterials, 2023
This paper presents a study that aims to enhance the performance of quantum dot light-emitting didoes (QLEDs) by employing a solution-processed molybdenum oxide (MoOx) nanoparticle (NP) as a hole injection layer (HIL).
Ji-Hun Yang, Gyeong-Pil Jang, Su-Young Kim, Young-Bin Chae, Kyoung-Ho Lee, Dae-Gyu Moon, Chang-Kyo Kim   +6 more
doaj   +1 more source

PIN quantum-dot LEDs with enhanced efficiency and stability enabled by bulk-heterojunction hole transport layer

Nano Research
Although quantum-dot light-emitting diodes (QLEDs) can exhibit high efficiency and long lifetime, the realization of QLEDs-based displays remains challenging due to their complex multilayer architectures and the use of unstable poly(3,4 ...
Heng Zhang, Zhe Wang, Dawei Yang, Bingsuo Zou, Shuming Chen   +4 more
doaj   +1 more source

All-Inorganic Red-Light Emitting Diodes Based on Silicon Quantum Dots

Crystals, 2019
We report herein an all-inorganic quantum dot light emitting diode (QLED) where an optically active layer of crystalline silicon (Si) is mounted. The prototype Si-QLED has an inverted device architecture of ITO/ZnO/QD/WO3/Al multilayer, which was ...
Batu Ghosh, Naoto Shirahata
doaj   +1 more source

Bromide Decorated Eco‐Friendly ZnSeTe/ZnSe/ZnS Quantum Dots for Efficient Blue Light‐Emitting Diodes

Advanced Materials Interfaces, 2023
Multi‐shelled ZnSeTe/ZnSe/ZnS quantum dots (QDs) have served as a promising eco‐friendly emitter for blue quantum dot light‐emitting diodes (QLEDs). While extensive studies have concentrated on the optimization of the shell species and thickness of the ...
Zhishuai Zheng, Zhenwei Ren, Wenlin Xia, Chengzhao Luo, Jie Li, Wenchen Ma, Huifeng Ji, Hengfei Shi, Yu Chen   +8 more
doaj   +1 more source

Recent progress and challenges in top‐emitting quantum dot light‐emitting diodes

FlexMat, EarlyView.
This review summarizes recent advances in top‐emitting quantum‐dot light‐emitting diodes (TE‐QLEDs), including device architectures, microcavity engineering, angular‐emission management, and operational stability, highlighting optical–electrical–thermal co‐optimization as the key pathway toward reliable, high‐performance TE‐QLEDs. Abstract Top‐emitting
Chengyi Chen, Yuqi Liang, Mian Wei, Qiulei Xu, Huimin Zhang, Zhenghui Wu, Huaibin Shen   +6 more
wiley   +1 more source

Enhance the Light Extraction Efficiency of QLED with Surface Micro-Nanostructure [PDF]

Journal of Nanomaterials, 2020
Quantum dot light-emitting diodes (QLEDs) are usually a flat multilayer structure. The luminous efficiency of QLEDs is limited because the light extraction is constrained owing to the substrate mode at the air/substrate interface, the waveguide mode at the conductive glass/organic interface, and the surface plasmon polaritons (SPPs) along the metal ...
Zilei Liu, Feng Li, Gaoxiang Huang, Jiahu Wei, Guangyu Jiang, Yan Huang   +5 more
openaire   +1 more source

Tin‐based perovskite light‐emitting diodes: Progress and perspective

InfoScience, EarlyView.
This review assesses tin‐based perovskite light‐emitting diodes (PeLEDs), focusing on the limitations of Sn2+ oxidation–induced defects and uncontrolled crystallization. By evaluating advanced device engineering and structural innovations, this article highlights their viability in narrowband pure‐red displays and near‐infrared optical communication ...
Wenhao Bai, Tongtong Xuan, Guanhua Ren, Ting Gong, Kunjie Song, Jiaxin Duan, Huili Li, Rong‐Jun Xie   +7 more
wiley   +1 more source

MXenes in Next‐Generation Light‐Emitting Diodes: Innovations, Challenges, and Future Prospects

Laser &Photonics Reviews, EarlyView.
This review provides a systematic and critical overview of MXene integration in LEDs from their synthesis strategies and electronic characteristics to their roles as electrodes, interlayers, and emissive materials. It also explores the emerging prospects and challenges for MXene‐enabled flexible, transparent, and intelligent display technologies that ...
Awais Ali, Muhammad Ahsan Saeed, Waqas Ahmad, Hanseok Seo, Junhyeok Park, Seongkeun Oh, Hyung Jin Choi, Muhammad Junaid Sultan, Rana Mujahid, Soong Ju Oh   +9 more
wiley   +1 more source

Unraveling the efficiency losses and improving methods in quantum dot-based infrared up-conversion photodetectors

Opto-Electronic Science
Quantum dot-based up-conversion photodetector, in which an infrared photodiode (PD) and a quantum dot light-emitting diode (QLED) are back-to-back connected, is a promising candidate for low-cost infrared imaging.
Jiao Jiao Liu, Xinxin Yang, Qiulei Xu, Ruiguang Chang, Zhenghui Wu, Huaibin Shen   +5 more
doaj   +1 more source