High power and high efficiency blue light emitting diode on freestanding semipolar (101¯1¯) bulk GaN substrate

2007 ◽  
Vol 90 (23) ◽  
pp. 233504 ◽  
Author(s):  
Hong Zhong ◽  
Anurag Tyagi ◽  
Natalie N. Fellows ◽  
Feng Wu ◽  
Roy B. Chung ◽  
...  
Keyword(s):  
Blue Light ◽  
High Power ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Bulk Gan

High power and high efficiency green light emitting diode on free-standing semipolar (112) bulk GaN substrate

2007 ◽  
Vol 1 (4) ◽  
pp. 162-164 ◽  
Author(s):  
Hitoshi Sato ◽  
Anurag Tyagi ◽  
Hong Zhong ◽  
Natalie Fellows ◽  
Roy B. Chung ◽  
...  
Keyword(s):  
High Power ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Green Light ◽  
Free Standing ◽  
Light Emitting ◽  
Bulk Gan

High Power and High Efficiency Blue InGaN Light Emitting Diodes on Free-Standing Semipolar (30\bar3\bar1) Bulk GaN Substrate

2010 ◽  
Vol 49 (8) ◽  
pp. 080203 ◽  
Author(s):  
Ingrid L. Koslow ◽  
Junichi Sonoda ◽  
Roy B. Chung ◽  
Chih-Chien Pan ◽  
Stuart Brinkley ◽  
...  
Keyword(s):  
High Power ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Free Standing ◽  
Light Emitting ◽  
Bulk Gan

Vertical Stand Transparent Light-Emitting Diode Architecture for High-Efficiency and High-Power Light-Emitting Diodes

2010 ◽  
Vol 49 (8) ◽  
pp. 080210 ◽  
Author(s):  
Chih-Chien Pan ◽  
Ingrid Koslow ◽  
Junichi Sonoda ◽  
Hiroaki Ohta ◽  
Jun-Seok Ha ◽  
...  
Keyword(s):  
High Power ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Light Emitting

Efficient and high-power AlGaN-based ultraviolet light-emitting diode grown on bulk GaN

2001 ◽  
Vol 79 (6) ◽  
pp. 711-712 ◽  
Author(s):  
Toshio Nishida ◽  
Hisao Saito ◽  
Naoki Kobayashi
Keyword(s):  
Ultraviolet Light ◽  
High Power ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Bulk Gan

Demonstration of high power blue-green light emitting diode on semipolar (112̄2) bulk GaN substrate

2007 ◽  
Vol 43 (15) ◽  
pp. 825 ◽  
Author(s):  
H. Zhong ◽  
A. Tyagi ◽  
N.N. Fellows ◽  
R.B. Chung ◽  
M. Saito ◽  
...  
Keyword(s):  
High Power ◽  
Light Emitting Diode ◽  
Green Light ◽  
Light Emitting ◽  
Bulk Gan

scholarly journals Effects of 462 nm Light-Emitting Diode on the Inactivation of Escherichia coli and a Multidrug-Resistant by Tetracycline Photoreaction

2018 ◽  
Vol 7 (9) ◽  
pp. 278 ◽  
Author(s):  
Shiuh-Tsuen Huang ◽  
Chun-Yi Wu ◽  
Nan‐Yao Lee ◽  
Chien-Wei Cheng ◽  
Meei-Ju Yang ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Blue Light ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Phosphate Buffer Solution ◽  
Multidrug Resistant ◽  
Molecular Formula ◽  
Light Illumination ◽  
Light Emitting ◽  
E Coli

The adaptability of bacterial resistance to antibiotics contributes to its high efficiency during evolution. Tetracycline (TC) is a broad-spectrum antimicrobial agent. Chromatographic analyses and mass spectrometry were used to study the effects of the light illumination of a 462 nm light-emitting diode (LED) on the conformational changes of TC in a phosphate buffer solution (PBS, pH 7.8). Especially, the inactivation of superoxide anion radicals (O2•−) and Escherichia coli (E. coli), including that of a multidrug-resistant E. coli (MDR E. coli), were investigated during the photolysis of TC. A photolysis product of TC (PPT) was generated in an alkaline solution after the illumination of a blue light. The mass spectra of PPT had characteristic ion signals in m/z 459, 445, and 249.1 Da. The PPT has the molecular formula of C22H22N2O9, and the exact mass is 458.44 g/mol. The inactivation of MDR E. coli is not significant with TC treatment. The drug-resistant ability of MDR E. coli has a less significant effect on PPT, and the changed conformation of TC retained the inactivation ability of MDR E. coli upon blue light photoreaction. With TC, illuminated by a blue light in a pH 7.8 PBS, O2•− was generated from TC photolysis, which enhanced the inactivation of E. coli and MDR E. coli. A 96.6% inactivation rate of MDR E. coli was reached with TC under 2.0 mW/cm2 blue light illumination at 25 ± 3 °C for 120 min, and the effects of the TC-treated photoreaction on MDR E. coli viability repressed the growth of MDR E. coli by 4 to 5 logs. The present study of the blue light photoreaction of TC offers a new approach to the inactivation of MDR E. coli.

Deep blue light-emitting diode based on high molecular weight poly(9,9-dioctylfluorene) with high efficiency and color stability

2008 ◽  
Vol 9 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Shin-Rong Tseng ◽  
Shiuan-Yi Li ◽  
Hsin-Fei Meng ◽  
Yi-Hsiang Yu ◽  
Chia-Ming Yang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Blue Light ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Color Stability ◽  
Light Emitting ◽  
Deep Blue ◽  
High Molecular Weight Poly
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