scholarly journals Phosphor-Free InGaN White Light Emitting Diodes Using Flip-Chip Technology

Materials ◽  
2017 ◽  
Vol 10 (4) ◽  
pp. 432 ◽  
Author(s):  
Ying-Chang Li ◽  
Liann-Be Chang ◽  
Hou-Jen Chen ◽  
Chia-Yi Yen ◽  
Ke-Wei Pan ◽  
...  
Keyword(s):  
White Light ◽  
Flip Chip ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Chip Technology ◽  
White Light Emitting Diodes

scholarly journals Performance Improvement of GaN-Based Flip-Chip White Light-Emitting Diodes with Diffused Nanorod Reflector and with ZnO Nanorod Antireflection Layer

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Hsin-Ying Lee ◽  
Yu-Chang Lin ◽  
Yu-Ting Su ◽  
Chia-Hsin Chao ◽  
Véronique Bardinal
Keyword(s):  
Blue Light ◽  
White Light ◽  
Flip Chip ◽  
Light Emitting Diodes ◽  
Light Output ◽  
Nanorod Array ◽  
Zno Nanorod ◽  
Light Emitting ◽  
Zno Nanorod Array ◽  
White Light Emitting Diodes

The GaN-based flip-chip white light-emitting diodes (FCWLEDs) with diffused ZnO nanorod reflector and with ZnO nanorod antireflection layer were fabricated. The ZnO nanorod array grown using an aqueous solution method was combined with Al metal to form the diffused ZnO nanorod reflector. It could avoid the blue light emitted out from the Mg-doped GaN layer of the FCWLEDs, which caused more blue light emitted out from the sapphire substrate to pump the phosphor. Moreover, the ZnO nanorod array was utilized as the antireflection layer of the FCWLEDs to reduce the total reflection loss. The light output power and the phosphor conversion efficiency of the FCWLEDs with diffused nanorod reflector and 250 nm long ZnO nanorod antireflection layer were improved from 21.15 mW to 23.90 mW and from 77.6% to 80.1% in comparison with the FCWLEDs with diffused nanorod reflector and without ZnO nanorod antireflection layer, respectively.

Effect of flip-chip height on the optical performance of conformal white-light-emitting diodes

2018 ◽  
Vol 43 (5) ◽  
pp. 1015 ◽  
Author(s):  
Zongtao Li ◽  
Yong Tang ◽  
Jiasheng Li ◽  
Xinrui Ding ◽  
Caiman Yan ◽  
...  
Keyword(s):  
White Light ◽  
Flip Chip ◽  
Light Emitting Diodes ◽  
Optical Performance ◽  
Light Emitting ◽  
White Light Emitting Diodes

Enhanced Cyan Emission and Optical Tuning of Ca 3 Ga 4 O 9 :Bi 3+ for High‐Quality Full‐Spectrum White Light‐Emitting Diodes

2020 ◽  
Vol 8 (22) ◽  
pp. 2001037 ◽  
Author(s):  
Dongjie Liu ◽  
Xiaohan Yun ◽  
Guogang Li ◽  
Peipei Dang ◽  
Maxim S. Molokeev ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
High Quality ◽  
Full Spectrum ◽  
Light Emitting ◽  
White Light Emitting Diodes

Glass-ceramic composites for high-power white-light-emitting diodes

2021 ◽  
Author(s):  
Alessandro Longato ◽  
Sebastiano Picco ◽  
Lorenzo Moro ◽  
Matteo Buffolo ◽  
Carlo De Santi ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Glass Ceramic ◽  
Light Emitting Diodes ◽  
Ceramic Composites ◽  
Light Emitting ◽  
White Light Emitting Diodes
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