Results 1 to 10 of about 199 (104)

Top-Emitting Active-Matrix Quantum Dot Light-Emitting Diode Array with Optical Microcavity for Micro QLED Display [PDF]

Nanomaterials, 2022
An electroluminescent quantum-dot light-emitting diode (QLED) device and a micro QLED device array with a top-emitting structure were demonstrated in this study.
Kuo-Yang Lai, Shuan Yang, Tung-Chang Tsai, I-An Yao, Chiu-Lien Yang, Chih-Ching Chang, Hsueh-Shih Chen   +6 more
doaj   +6 more sources

Wide-Angle Mini-Light-Emitting Diodes without Optical Lens for an Ultrathin Flexible Light Source [PDF]

Micromachines, 2022
This report outlines a proposed method of packaging wide-angle (WA) mini-light-emitting diode (mini-LED) devices without optical lenses to create a highly efficient, ultrathin, flexible planar backlight for portable quantum dot light-emitting diode (QLED)
Yen-Lung Chen, Wen-Chung Chin, Chun-Wei Tsai, Chang-Che Chiu, Ching-Ho Tien, Zhi-Ting Ye, Pin Han   +6 more
doaj   +2 more sources

Biometric authentication security enhancement under quantum dot light-emitting diode display via fingerprint imaging and temperature sensing [PDF]

Scientific Reports, 2023
We improved biometric authentication security using dual recognition based on fingerprint image detection and skin-temperature-change sensing under quantum dot light-emitting diode (QLED) displays.
Hanyung Jung, Soobin Sim, Hyunkoo Lee
doaj   +2 more sources

Electrically pumped surface-emitting amplified spontaneous emission from colloidal quantum dots [PDF]

Light: Science & Applications
Colloidal quantum dots (QDs) are promising gain materials for realizing solution-processable, wavelength-tunable and low-cost laser diodes. However, achieving electrically pumped amplified spontaneous emission (ASE) in QDs, a prerequisite for lasing, is ...
Fengshou Tian, Tianhong Zhou, Xuanyu Zhang, Rui Chen, Shuming Chen   +4 more
doaj   +2 more sources

High-performance tandem CdSe/ZnS quantum-dot light-emitting diodes with a double-layer interconnecting layer composed of thermally evaporated and sputtered metal oxides

Journal of Information Display, 2022
High-performance tandem quantum-dot light-emitting diodes (QLEDs) are needed for practical next-generation displays. This study designed a high-performance interconnecting layer (ICL) that combines QLED units into tandem QLEDs and demonstrated its ...
Ohun Kwon, Dongjin Kim, Mijin Kim, Honyeon Lee   +3 more
doaj   +3 more sources

Surface-Engineered ZnO Nanoparticles via Acetone Immersion for Charge-Balanced High Resolution Full-Color Organic Light Emitting Diode Displays. [PDF]

Small
Acetone post‐immersion of OLEDs effectively passivates oxygen vacancies in the ZnO electron transport layer, reducing charge trapping and enhancing electron injection. This improves hole‐blocking at the interface and decreases exciton quenching in the emission layer, resulting in significantly enhanced electrical and optical device performance ...
Lee C, Kim HB, Lee R, Shin Y, Kim TH, Song JK, Lee H.   +6 more
europepmc   +2 more sources

Flexible CdSe/ZnS Quantum-Dot Light-Emitting Diodes with Higher Efficiency than Rigid Devices

Micromachines, 2022
Fabrication of high-performance, flexible quantum-dot light-emitting diodes (QLEDs) requires the reliable manufacture of a flexible transparent electrode to replace the conventional brittle indium tin oxide (ITO) transparent electrode, along with ...
Mijin Kim, Dongjin Kim, Ohun Kwon, Honyeon Lee   +3 more
doaj   +3 more sources

Hydrocolloid-Based Multiwavelength Stretchable QD-OLED Patch for Simultaneous Neonatal Jaundice and Dermatitis Treatment with Biosignal Monitoring. [PDF]

Adv Healthc Mater
Comparison of therapeutic and diagnostic applications of a surface‐emitting light source with multiwavelength emission characteristics. Abstract Conventional light‐emitting‐diode‐based light sources suffer from rigidity, localized heating, and poor adaptability to skin deformation, limiting their use in skin‐attached medical devices.
Kim IH, Kim YW, Jeong JY, Shin YJ, Lee C, Choi JG, Kwon OK, Kim KH, Kwon SJ, Cho ES, Jeon Y.   +10 more
europepmc   +2 more sources

Silicon Quantum Dot Light Emitting Diode at 620 nm

Micromachines, 2019
Here we report a quantum dot light emitting diode (QLED), in which a layer of colloidal silicon quantum dots (SiQDs) works as the optically active component, exhibiting a strong electroluminescence (EL) spectrum peaking at 620 nm.
Hiroyuki Yamada, Naoto Shirahata
doaj   +3 more sources

Enhancing the performance of CdSe/ZnS quantum-dot light-emitting diodes by utilizing hole injection layers fabricated with a solution-processed mixture of vanadium oxide and molybdenum oxide

Journal of Information Display
We developed a high-performance CdSe/ZnS quantum-dot light-emitting diode (QLED) incorporating a hole injection layer (HIL) composed of a solution-processed vanadium oxide (VO) and molybdenum oxide (MoO) mixture.
Suyoung Kim, Chang-Kyo Kim, Honyeon Lee
doaj   +3 more sources