GaN light-emitting diode with monolithically integrated photonic crystals and angled sidewall deflectors for efficient surface emission

2009 ◽  
Vol 94 (10) ◽  
pp. 101105 ◽  
Author(s):  
Joonhee Lee ◽  
Sungmo Ahn ◽  
Sihan Kim ◽  
Dong-Uk Kim ◽  
Heonsu Jeon ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Monolithically Integrated ◽  
Surface Emission

GaAs-Based Nanoneedle Light Emitting Diode and Avalanche Photodiode Monolithically Integrated on a Silicon Substrate

Nano Letters ◽  
2011 ◽  
Vol 11 (2) ◽  
pp. 385-390 ◽  
Author(s):  
Linus C. Chuang ◽  
Forrest G. Sedgwick ◽  
Roger Chen ◽  
Wai Son Ko ◽  
Michael Moewe ◽  
...  
Keyword(s):  
Silicon Substrate ◽  
Light Emitting Diode ◽  
Avalanche Photodiode ◽  
Light Emitting ◽  
Monolithically Integrated

Tunable, full-color nanowire light emitting diode arrays monolithically integrated on Si and sapphire

2016 ◽  
Author(s):  
Renjie Wang ◽  
Yong-Ho Ra ◽  
Yuanpeng Wu ◽  
Songrui Zhao ◽  
Hieu P. T. Nguyen ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Light Emitting ◽  
Monolithically Integrated ◽  
Full Color

Organic Light-Emitting Diode Microcavities from Transparent Conducting Metal Oxide Photonic Crystals

Nano Letters ◽  
2011 ◽  
Vol 11 (4) ◽  
pp. 1457-1462 ◽  
Author(s):  
Daniel P. Puzzo ◽  
Michael G. Helander ◽  
Paul G. O’Brien ◽  
Zhibin Wang ◽  
Navid Soheilnia ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Metal Oxide ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Transparent Conducting

Metalloporphyrins into Mesoporous Photonic Crystals: Towards Nanostructured Sensing Devices

2019 ◽  
Author(s):  
Rolando M. Caraballo ◽  
Diego Onna ◽  
Nicolás López Abdala ◽  
Galo J.A.A. Soler-Illia ◽  
Mariana Hamer
Keyword(s):  
Photonic Crystals ◽  
Hybrid Material ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Optical Filters ◽  
Spectral Window ◽  
Light Emitting ◽  
Future Design ◽  
Mesoporous Oxide ◽  
Specific Reactivity

<p>Metalloporphyrins are molecules capable of optically sensing targets due to their specific reactivity. Shifts in metalloporphyrins spectra are usually in the order of 30 nm, requiring a spectrophotometer for transducing the analyte concentration. Mesoporous oxide thin films photonic crystals (PC) act as optical filters, while their pores can host molecular moieties. In this work used a metalloporphyrin, Mn<sup>III</sup> meso-tetra(N-methyl-4-pyridyl) porphyrin (MP), to add a recognition functionality to a PC and, at the same time, retain their pore network, in order to develop a versatile and portable sensing device for volatile amines. The hybrid material MP@PC was prepared by immersion of the PC, synthesized from two mesoporous oxides with different refractive index, in an MP solution. The system was characterized by UV-Vis absorption and FTIR spectroscopies, and SEM microscopy. Sensing of small molecules was tested using ethylenediamine (EDA) as a volatile amine model, showing an absorbance increase in the PC spectral window with promising analytical parameters. The hybrid material presents enhanced sensing capabilities compared to MP or PC alone. A prototype device was built, aiming for a future design of simple, low-cost equipment, with a light emitting diode and a light-dependent resistor, including the MP@PC sensor. The device is capable of sensing with only 1.52 μg of MP on a 1 cm<sup>2</sup> glass slide and it is easily prepared and showed a very small detection limit.</p>

Enhanced optical power of GaN-based light-emitting diode with compound photonic crystals by multiple-exposure nanosphere-lens lithography

2014 ◽  
Vol 105 (1) ◽  
pp. 013108 ◽  
Author(s):  
Yonghui Zhang ◽  
Tongbo Wei ◽  
Zhuo Xiong ◽  
Liang Shang ◽  
Yingdong Tian ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Light Emitting Diode ◽  
Optical Power ◽  
Multiple Exposure ◽  
Light Emitting

scholarly journals Flexible and monolithically integrated multicolor light emitting diodes using morphology-controlled GaN microstructures grown on graphene films

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Keundong Lee ◽  
Dongha Yoo ◽  
Hongseok Oh ◽  
Gyu-Chul Yi
Keyword(s):  
Mechanical Stability ◽  
Growth Parameters ◽  
Light Emitting Diode ◽  
Growth Time ◽  
Controlled Growth ◽  
Light Emitting ◽  
Cvd Graphene ◽  
Monolithically Integrated ◽  
Graphene Films ◽  
Led Arrays

AbstractWe report flexible and monolithically integrated multicolor light-emitting diode (LED) arrays using morphology-controlled growth of GaN microstructures on chemical-vapor-deposited (CVD) graphene films. As the morphology-controlled growth template of GaN microstructures, we used position-controlled ZnO nanostructure arrays with different spacings grown on graphene substrates. In particular, we investigated the effect of the growth parameters, including micropattern spacings and growth time and temperature, on the morphology of the GaN microstructures when they were coated on ZnO nanostructures on graphene substrates. By optimizing the growth parameters, both GaN microrods and micropyramids formed simultaneously on the graphene substrates. Subsequent depositions of InGaN/GaN quantum well and p-GaN layers and n- and p-type metallization yielded monolithic integration of microstructural LED arrays on the same substrate, which enabled multicolor emission depending on the shape of the microstructures. Furthermore, the CVD graphene substrates beneath the microstructure LEDs facilitated transfer of the LED arrays onto any foreign substrate. In this study, Cu foil was used for flexible LEDs. The flexible devices exhibited stable electroluminescence, even under severe bending conditions. Cyclic bending tests demonstrated the excellent mechanical stability and reliability of the devices.

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