Using agglomerated Ag grid to improve the light output of near ultraviolet AlGaN-based light-emitting diode
| Autor: | Sun Kyung Kim, Daesung Kang, Jun-Yong Kim, Jae Seong Park, Tae Yeon Seong, Jin-Young Na |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Annealing (metallurgy) 02 engineering and technology 01 natural sciences law.invention Optics law 0103 physical sciences Electrical and Electronic Engineering Near ultraviolet 010302 applied physics business.industry 021001 nanoscience & nanotechnology Condensed Matter Physics Grid Atomic and Molecular Physics and Optics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Indium tin oxide Wavelength Electrode Optoelectronics 0210 nano-technology business Light-emitting diode Voltage |
| Zdroj: | Microelectronic Engineering. 169:29-33 |
| ISSN: | 0167-9317 |
| DOI: | 10.1016/j.mee.2016.11.015 |
| Popis: | In this study, we introduced mesh-patterned Ag grid (width: 1520m) to enhance the light output power of near ultraviolet (385nm) AlGaN-based light emitting diode (LEDs). The Ag grid was intentionally agglomerated by annealing at 500C for 1min in air. The output performance of AlGaN-based LEDs fabricated with Ag-grid/indium tin oxide (ITO) electrodes was compared with those with ITO electrode. At a wavelength of 385nm, the samples had transmittances of 54.274.1%. LEDs with the Ag-grid/ITO contacts exhibited lower forward voltages of 3.323.57V at 20mA than LED with the ITO electrode (3.64V). The LEDs with the Ag-grid/ITO electrodes exhibited 15.615.9% higher light output (at 400mW) than that with the ITO electrode. Based on finite-difference time-domain simulations, the improved output performance is briefly described and discussed. Display Omitted Agglomerated Ag grid used to improve the light output power of AlGaN-based LEDs.Agglomerated Ag grid samples had transmittances of 54.274.1% at 385nm.LEDs with Ag grid show much lower forward voltages than LEDs with ITO contact.LEDs with Ag grid yield higher output power than LEDs with ITO electrode |
| Databáze: | OpenAIRE |
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