Improvement of Light Extraction Efficiency in n-ZnO:Ga/i-ZnO/p-Si Heterojunction LED Using Truncated Pyramid Patterned Si Substrates

2019 ◽  
Vol 25 (9) ◽  
pp. 177-182
Author(s):  
Jae Hyun Kim ◽  
Mi Kyung Choi ◽  
Hong-Seok Seo ◽  
Won Suk Han ◽  
Young Yi Kim ◽  
...  
Keyword(s):  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Si Substrates ◽  
Truncated Pyramid

ZnO Nano-arrays on High Power Blue LED Chip for Enhanced Light Extraction Efficiency

2012 ◽  
Vol 27 (7) ◽  
pp. 716-720
Author(s):  
Bing XU ◽  
Jun-Liang ZHAO ◽  
Jian-Ming ZHANG ◽  
Xiao-Wei SUN ◽  
Fu-Wei ZHUGE ◽  
...  
Keyword(s):  
High Power ◽  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Blue Led

Light extraction efficiency enhancement of CH3NH3PbBr3 light-emitting diodes using nanopatterned PEDOT:PSS layers

2021 ◽  
Vol 119 (23) ◽  
pp. 233302
Author(s):  
Shukun Weng ◽  
Min Sun ◽  
Liping Zhang ◽  
Lubing Jiang ◽  
Chao Shi ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Efficiency Enhancement ◽  
Light Emitting

scholarly journals Holographic Fabrication and Optical Property of Graded Photonic Super-Crystals with a Rectangular Unit Super-Cell

Photonics ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 34 ◽  
Author(s):  
Safaa Hassan ◽  
Oliver Sale ◽  
David Lowell ◽  
Noah Hurley ◽  
Yuankun Lin
Keyword(s):  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Interference Lithography ◽  
Light Modulator ◽  
Light Emitting ◽  
Polarization Effects ◽  
Organic Light ◽  
Super Cell ◽  
Phase Engineering

Recently developed graded photonic super-crystals show an enhanced light absorption and light extraction efficiency if they are integrated with a solar cell and an organic light emitting device, respectively. In this paper, we present the holographic fabrication of a graded photonic super-crystal with a rectangular unit super-cell. The spatial light modulator-based pixel-by-pixel phase engineering of the incident laser beam provides a high resolution phase pattern for interference lithography. This also provides a flexible design for the graded photonic super-crystals with a different ratio of length over the width of the rectangular unit super-cell. The light extraction efficiency is simulated for the organic light emitting device, where the cathode is patterned with the graded photonic super-crystal. The high extraction efficiency is maintained for different exposure thresholds during the interference lithography. The desired polarization effects are observed for certain exposure thresholds. The extraction efficiency reaches as high as 75% in the glass substrate.

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