High-performance white OLEDs with high color-rendering index for next-generation solid-state lighting

2011 ◽  
Vol 19 (11) ◽  
pp. 838 ◽  
Author(s):  
Takuya Komoda ◽  
Nobuhiro Ide ◽  
Kittichungchit Varutt ◽  
Kazuyuki Yamae ◽  
Hiroya Tsuji ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Solid State Lighting ◽  
Next Generation ◽  
Color Rendering Index ◽  
White Oleds ◽  
Color Rendering

Phosphorescent White OLEDs for Solid-state Lighting

2009 ◽  
Vol 1212 ◽  
Author(s):  
Sean Xia ◽  
Peter Levermore ◽  
Vadim Adamovich ◽  
Chun Lin ◽  
Raymond C. Kwong ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Energy Efficient ◽  
High Efficiency ◽  
Solid State Lighting ◽  
Energy Star ◽  
Lighting Industry ◽  
Partial Energy ◽  
White Oleds ◽  
Color Rendering

AbstractWhite OLEDs (WOLEDTMs) fabricated using energy efficient phosphorescent OLED (PHOLEDTM) technology open up exciting new ways to develop efficient white lighting. WOLEDs have the potential to transform the lighting industry. In this presentation, phosphorescent WOLEDs with high conductivity transport layers will be discussed. White light can be generated by partial energy transfer from blue to green and red. Single WOLED stacks are demonstrated that match the Energy Star® lighting color criteria for 2700K and 3000K with high efficiency (˜80 lm/W) and high color rendering indices (˜80). Both devices had operational lifetimes (LT70%) over 30,000 hours measured from an initial luminance of 1,000 cd/m2. Different techniques to improve optical outcoupling will also be discussed.

High-Performance White-OLED Devices for Next-Generation Solid-State Lighting

2013 ◽  
Vol 29 (5) ◽  
pp. 38-43
Author(s):  
Kazuyuki Yamae ◽  
Hiroya Tsuji ◽  
Varutt Kittichungchit ◽  
Nobuhiro Ide ◽  
Takuya Komoda
Keyword(s):  
Solid State ◽  
High Performance ◽  
Solid State Lighting ◽  
Next Generation ◽  
White Oled

Promotion of solid-state lighting for ZnCdSe quantum dot modified-YAG-based white light-emitting diodes

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 51989-51996 ◽  
Author(s):  
Shu-Ru Chung ◽  
Sheng-Shiun Chen ◽  
Kuan-Wen Wang ◽  
Cyuan-Bin Siao
Keyword(s):  
Solid State ◽  
Quantum Dot ◽  
White Light ◽  
Light Emitting Diodes ◽  
Solid State Lighting ◽  
Light Emitting ◽  
Photoluminescence Quantum Yield ◽  
Color Rendering Index ◽  
White Light Emitting Diodes ◽  
Color Rendering

In this study, the effect of quantum dot (QD) addition and photoluminescence quantum yield (PL QY) of QDs on the luminous efficacy and color rendering index (CRI) of white light-emitting diodes (LEDs) has been investigated.

Broadband white luminescent phosphor Ba(Si7−xAlx)Liy(N10−x+yOx−y):Eu2+ with a high color rendering index for solid state lighting

2021 ◽  
Vol 9 (16) ◽  
pp. 5497-5504
Author(s):  
Takashi Takeda ◽  
Shiro Funahashi ◽  
Rong-Jun Xie ◽  
Naoto Hirosaki
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Solid State Lighting ◽  
Color Rendering Index ◽  
Color Rendering

Broadband white luminescent particles by introducing Li into the crystal structure of Ba(Si7−xAlx)(N10−xOx):Eu2+.

scholarly journals Color Rendering Index Thermal Stability Improvement of Glass-Based Phosphor-Converted White Light-Emitting Diodes for Solid-State Lighting

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Chun-Chin Tsai
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
White Light ◽  
Light Emitting Diodes ◽  
Solid State Lighting ◽  
Light Emitting ◽  
Warm White Light ◽  
Color Rendering Index ◽  
White Light Emitting Diodes ◽  
Color Rendering

High color rendering index performance has been required for phosphor-converted warm-white light-emitting diodes (PC-WWLEDs) in lighting industry. The characteristics of low-temperature fabricated phosphor (yellow: Ce3+:YAG, green: Tb3+:YAG, and red: CaAlClSiN3:Eu2+) doped glass were presented for applications to high color rendering index warm-white-light-emitting diodes. Color coordinates (x, y) = (0.36, 0.29), quantum yield (QY) = 55.6%, color rending index (CRI) = 85.3, and correlated color temperature (CCT) = 3923 K were characterized. Glass-based PC-WWLEDs was found able to maintain good thermal stability for long-time high-temperature operation. QY decay, CRI remenance, and chromaticity shift were also analyzed for glass- and silicone-based high-power PC-WLEDs by thermal aging at 150°C and 250°C for industrial test standard’s aging time 1008 hours. Better than the silicone’s, thermal stability of glass-based PC-WLEDs has been improved. The resulted high color rendering index (CRI) glass phosphor potentially can be used as a phosphor layer for high-performance and low-cost PC-WLEDs used in next-generation indoor solid-state lighting applications.

Novel blue fluorescent materials for high-performance nondoped blue OLEDs and hybrid pure white OLEDs with ultrahigh color rendering index

Nano Energy ◽  
2020 ◽  
Vol 68 ◽  
pp. 104325 ◽  
Author(s):  
Futong Liu ◽  
Hui Liu ◽  
Xiangyang Tang ◽  
Shenghong Ren ◽  
Xin He ◽  
...  
Keyword(s):  
High Performance ◽  
Fluorescent Materials ◽  
Color Rendering Index ◽  
White Oleds ◽  
Color Rendering ◽  
Pure White

72.1: Invited Paper: High Performance White OLEDs for Next Generation Solid State Lightings

2011 ◽  
Vol 42 (1) ◽  
pp. 1056-1059 ◽  
Author(s):  
Takuya Komoda ◽  
Hiroya Tsuji ◽  
Kazuyuki Yamae ◽  
Kittichungchit Varutt ◽  
Yuko Matsuhisa ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Next Generation ◽  
White Oleds
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