Improvement of the Light Emission Efficiency on Nonpolar a-plane GaN LEDs with SiO₂ Current Blocking Layer Article Swipe

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YOU? · · 2017 · Open Access · · DOI: https://doi.org/10.4313/jkem.2017.30.3.175

In this study, we investigate the $SiO_2$ current blocking layer (CBL) to improve light output power efficiency in nonpolar a-plane (11-20) GaN LEDs on a r-plane sapphire substrate. The $SiO_2$ CBL was produced under the p-pad layer using plasma enhanced chemical vapor deposition (PECVD). The results show that nonpolar GaN LED light output power with the $SiO_2$ CBL is considerably enhanced compared without the $SiO_2$ CBL. This can be attributed to reduced light absorption at the p-pad due to current blocking to the active layer by the $SiO_2$ CBL.

Related Topics

Materials Science

Light-Emitting Diode

Optoelectronics

Chemical Vapor Deposition

Electrical Engineering

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Materials science Light-emitting diode Optoelectronics Layer (electronics) Chemical vapor deposition Plasma-enhanced chemical vapor deposition Current (fluid) Sapphire Substrate (aquarium) Blocking (statistics) Absorption (acoustics) Optics Nanotechnology Composite material Electrical engineering Laser Oceanography Mathematics Geology Engineering Statistics Physics

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Type: article
Language: en
Landing Page: https://doi.org/10.4313/jkem.2017.30.3.175
PDF: http://society.kisti.re.kr/sv/SV_svpsbs03V.do?method=download&cn1=JAKO201712835100721
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DOI: https://doi.org/10.4313/jkem.2017.30.3.175

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Title: Improvement of the Light Emission Efficiency on Nonpolar a-plane GaN LEDs with SiO₂ Current Blocking Layer

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Type: article

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Language: en

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Publication year: 2017

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Publication date: 2017-03-01

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Authors: Seong Joo Hwang, Joon Seop Kwak

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Landing page: https://doi.org/10.4313/jkem.2017.30.3.175

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Concepts: Materials science, Light-emitting diode, Optoelectronics, Layer (electronics), Chemical vapor deposition, Plasma-enhanced chemical vapor deposition, Current (fluid), Sapphire, Substrate (aquarium), Blocking (statistics), Absorption (acoustics), Optics, Nanotechnology, Composite material, Electrical engineering, Laser, Oceanography, Mathematics, Geology, Engineering, Statistics, Physics

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Improvement of the Light Emission Efficiency on Nonpolar a-plane GaN LEDs with SiO2 Current Blocking Layer Article Swipe

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Improvement of the Light Emission Efficiency on Nonpolar a-plane GaN LEDs with SiO₂ Current Blocking Layer Article Swipe