Tunable, full-color nanowire light emitting diode arrays monolithically integrated on Si and sapphire

2016 ◽  
Author(s):  
Renjie Wang ◽  
Yong-Ho Ra ◽  
Yuanpeng Wu ◽  
Songrui Zhao ◽  
Hieu P. T. Nguyen ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Light Emitting ◽  
Monolithically Integrated ◽  
Full Color

scholarly journals Highly flexible, full-color, top-emitting quantum dot light-emitting diode tapes

2013 ◽  
Author(s):  
Xuyong Yang ◽  
Evren Mutlugun ◽  
Yuan Gao ◽  
Yongbiao Zhao ◽  
Swee Tiam Tan ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Full Color

25.1: Invited Paper: Quantum dots based full-color display on micro-light-emitting-diode technology

2018 ◽  
Vol 49 ◽  
pp. 267-270 ◽  
Author(s):  
CHIH-HAO LIN ◽  
CHUN-FU LEE ◽  
CHIEN-CHUNG LIN ◽  
CHEN-HSIEN CHU ◽  
CHIN-WEI SHER ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Color Display ◽  
Full Color

scholarly journals Operando direct observation of spin-states and charge-trappings of blue light-emitting-diode materials in thin-film devices

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Fumiya Osawa ◽  
Kazuhiro Marumoto
Keyword(s):  
Blue Light ◽  
High Performance ◽  
Density Functional ◽  
Light Emitting Diode ◽  
Green Light ◽  
Spin States ◽  
Light Emitting ◽  
Full Color ◽  
Color Displays ◽  
Materials Used

Abstract Spin-states and charge-trappings in blue organic light-emitting diodes (OLEDs) are important issues for developing high-device-performance application such as full-color displays and white illumination. However, they have not yet been completely clarified because of the lack of a study from a microscopic viewpoint. Here, we report operando electron spin resonance (ESR) spectroscopy to investigate the spin-states and charge-trappings in organic semiconductor materials used for blue OLEDs such as a blue light-emitting material 1-bis(2-naphthyl)anthracene (ADN) using metal–insulator–semiconductor (MIS) diodes, hole or electron only devices, and blue OLEDs from the microscopic viewpoint. We have clarified spin-states of electrically accumulated holes and electrons and their charge-trappings in the MIS diodes at the molecular level by directly observing their electrically-induced ESR signals; the spin-states are well reproduced by density functional theory. In contrast to a green light-emitting material, the ADN radical anions largely accumulate in the film, which will cause the large degradation of the molecule and devices. The result will give deeper understanding of blue OLEDs and be useful for developing high-performance and durable devices.

GaAs-Based Nanoneedle Light Emitting Diode and Avalanche Photodiode Monolithically Integrated on a Silicon Substrate

Nano Letters ◽  
2011 ◽  
Vol 11 (2) ◽  
pp. 385-390 ◽  
Author(s):  
Linus C. Chuang ◽  
Forrest G. Sedgwick ◽  
Roger Chen ◽  
Wai Son Ko ◽  
Michael Moewe ◽  
...  
Keyword(s):  
Silicon Substrate ◽  
Light Emitting Diode ◽  
Avalanche Photodiode ◽  
Light Emitting ◽  
Monolithically Integrated

Full-Color Fluorescent Display Devices Using a Near-UV Light-Emitting Diode

1996 ◽  
Vol 35 (Part 2, No. 7A) ◽  
pp. L838-L839 ◽  
Author(s):  
Yuichi Sato ◽  
Nobuyuki Takahashi ◽  
Susumu Sato
Keyword(s):  
Uv Light ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Display Devices ◽  
Full Color

scholarly journals Full-Color LCD Microdisplay System Based on OLED Backlight Unit and Field-Sequential Color Driving Method

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Sungho Woo ◽  
Dae-Hwan Kim ◽  
Yoon Soo Han ◽  
Byeong-Dae Choi
Keyword(s):  
Light Emitting Diode ◽  
Frame Rate ◽  
Driving Frequency ◽  
Light Emitting ◽  
Organic Layers ◽  
Organic Light Emitting Diode ◽  
Full Color ◽  
Organic Light ◽  
Color Mixing ◽  
The Given

We developed a single-panel LCD microdisplay system using a field-sequential color (FSC) driving method and an organic light-emitting diode (OLED) as a backlight unit (BLU). The 0.76′′ OLED BLU with red, green, and blue (RGB) colors was fabricated by a conventional UV photolithography patterning process and by vacuum deposition of small molecule organic layers. The field-sequential driving frequency was set to 255 Hz to allow each of the RGB colors to be generated without color mixing at the given display frame rate. A prototype FSC LCD microdisplay system consisting of a 0.7′′ LCD microdisplay panel and the 0.76′′ OLED BLU successfully exhibited color display and moving picture images using the FSC driving method.

Stereoscopic Full-Color Light Emitting Diode Display Using Parallax Barrier for Different Interpupillary Distances

2002 ◽  
Vol 9 (6) ◽  
pp. 244-250 ◽  
Author(s):  
Hirotsugu Yamamoto ◽  
Takeshi Sato ◽  
Syuji Muguruma ◽  
Yoshio Hayasaki ◽  
Yoshifumi Nagai ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Light Emitting ◽  
Full Color

A Single-Phase Full-Color Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ Micron Belt Mat for White-Light Emitting Diode Application

2016 ◽  
Vol 697 ◽  
pp. 727-732 ◽  
Author(s):  
Bo Cui ◽  
Qing Hong Zhang ◽  
Hong Zhi Wang ◽  
Yao Gang Li
Keyword(s):  
Heat Treatment ◽  
White Light ◽  
Single Phase ◽  
Uv Light ◽  
Light Emitting Diode ◽  
Electrospinning Process ◽  
Light Emitting ◽  
Full Color ◽  
Color Tunable ◽  
White Light Emitting Diodes

A new kind of Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ oxyfluoride phosphor micron belt mat was obatained by simply electrospinning process and subsequent heat treatment. XRD result shows that a pure Ca4Si2O7F2 phase can be obtained at low temperature of around 900 °C. The micron belt precursor has a smooth surface and uniform morphology, and the width and thickness of the belt is about 2 μm and 200 nm. The morphology of micron belt is well retained after heat treatment, forming a plat phosphor mat consisting of uniform micron belt network. Ca4Si2O7F2:Ce3+, Ca4Si2O7F2:Tb3+, and Ca4Si2O7F2:Sm3+ exhibit the characteristic emissions of Ce3+ (4f7→4f65d1, blue), Tb3+ (4f8→4f75d, green), and Sm3+ (4f6→4f65d, red) under the excitation of near-UV light, respectively. By adjusting the doping concentration of Ce3+, Tb3+, Sm3+ ions a white emission in a single phase was obtained under the excitation of 360 nm. We have demonstrated that Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ phosphor mat can be a promising candidate for a color-tunable phosphor mat applied in a near-UV White light emitting diodes.

scholarly journals Ternary complex [Sm(acac)3(5-Br-2,2′-bpy)] for the solution-processed white polymer light-emitting diode (WPLED)

2020 ◽  
Author(s):  
Jiaxiang Liu
Keyword(s):  
Solid State ◽  
White Light ◽  
Ternary Complex ◽  
Light Emitting Diode ◽  
Primary Component ◽  
Solution Processed ◽  
Light Emitting ◽  
Full Color ◽  
Polymer Light Emitting Diode ◽  
The Ideal

In consideration of the Sm3þ-centered characteristic orange-light as the ideal color-primary component toward a dichromatic white-light, herein, through the doping of the complex [Sm(acac)3(5-Br-2,20-bpy)] (2; Hacac ¼ acetylacetone; 5-Br-2,2′-bpy ¼ 5-Br-2,20-bipyridine) into the PVK (PVK ¼ poly(N-vinyl-carbazole)) host, the obtained PVK@2 film (10:1, wt/wt) exhibits the straightforward solid-state white-light (ΦPL ¼ 6.7%). Further using the PVK@2 film (10:1; wt/wt) as the emitting layer, its singlecomponent solution-processed WPLED gives the electroluminescent performance (LMax of 360.9 cd/m2, ηMax c of 1.08 cd/A) satisfactory enough for portable full-color flat displays

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