Enhanced Optical Output Power of Blue Light-Emitting Diode Grown on Sapphire Substrate with Patterned Distributed Bragg Reflector

2018 ◽  
Vol 7 (4) ◽  
pp. Q66-Q69 ◽  
Author(s):  
Chu-Young Cho ◽  
Kyung-Ho Park ◽  
Seong-Ju Park
Keyword(s):  
Output Power ◽  
Blue Light ◽  
Sapphire Substrate ◽  
Light Emitting Diode ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Light Emitting ◽  
Optical Output Power ◽  
Optical Output

scholarly journals Enhanced optical output power of blue light-emitting diodes with quasi-aligned gold nanoparticles

2014 ◽  
Vol 9 (1) ◽  
pp. 7 ◽  
Author(s):  
Yuanhao Jin ◽  
Qunqing Li ◽  
Guanhong Li ◽  
Mo Chen ◽  
Junku Liu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Output Power ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Optical Output Power ◽  
Optical Output

AlGaInP Light Emitting Diode with Coupled Distributed Bragg Reflector Structure

2017 ◽  
Vol 54 (5) ◽  
pp. 052301
Author(s):  
郑元宇 Zheng Yuanyu ◽  
吴超瑜 Wu Chaoyu ◽  
林峰 Lin Feng ◽  
伍明跃 Wu Mingyue ◽  
周启伦 Zhou Qilun ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Light Emitting

Enhanced optical output power of green light-emitting diodes by surface plasmon of gold nanoparticles

2011 ◽  
Vol 98 (5) ◽  
pp. 051106 ◽  
Author(s):  
Chu-Young Cho ◽  
Sang-Jun Lee ◽  
Jung-Hoon Song ◽  
Sang-Hyun Hong ◽  
Song-Mae Lee ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Output Power ◽  
Surface Plasmon ◽  
Light Emitting Diodes ◽  
Green Light ◽  
Light Emitting ◽  
Optical Output Power ◽  
Optical Output

Fabrication and characterization of microcavity organic light-emitting diode with CaF2/ZnS distributed Bragg reflector

2020 ◽  
Vol 699 ◽  
pp. 137912 ◽  
Author(s):  
Takuya Kitabayashi ◽  
Teruyuki Asashita ◽  
Naoya Satoh ◽  
Takayuki Kiba ◽  
Midori Kawamura ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Fabrication And Characterization

scholarly journals Output Power Monitoring of Ultraviolet Light-Emitting Diode via Sapphire Substrate

Photonics ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 63
Author(s):  
Ching-Hua Chen ◽  
Jia-Jun Zhang ◽  
Chang-Han Wang ◽  
Tzu-Chieh Chou ◽  
Rui-Xiang Chan ◽  
...  
Keyword(s):  
Output Power ◽  
Sapphire Substrate ◽  
Uv Light ◽  
Light Emitting Diode ◽  
Scattered Light ◽  
Transimpedance Amplifier ◽  
Processing Parameter ◽  
Zero Bias ◽  
Light Emitting ◽  
Power Monitoring

Ultraviolet (UV) light plays an important role in air/water/surface sterilization now. Maintaining a certain light intensity is often required to attain the targeted effect. In this paper, on-chip power monitoring of a UV-A light-emitting diode (LED) via sapphire substrate is reported. A p–i–n photodiode loop that surrounds the UV-A LED was designed and fabricated to monitor the output power by detecting the scattered light of the LED propagating through the sapphire substrate. No particular waveguide structure or processing parameter control was needed. The monitoring responsivities per unit of surface-emitting power obtained were approximately 21 and 25 mA/W at photodiode biases of 0 and 3 V, respectively. When combined with a transimpedance amplifier, a monitoring responsivity of 1.87 V/mW at zero bias was measured, and a different monitoring responsivity could be customized by adjusting the gain of the transimpedance amplifier. The operation principle of this device might be applicable to UV-B or UV-C LEDs.

Sign in / Sign up

Export Citation Format

Share Document