Pure red-light micrometer-scale emitting devices made from a nitride semiconductor reaches excellent efficiency.
Abstract
Energy is an indispensable part of our lives. We are challenging energy-saving novel light emitters and clean-energy generation systems at Energy Conversion Devices and Materials (ECO Devices) Laboratory at KAUST. The former is based on MOCVD technology, material science, and device technology. The latter is the nitride photocatalyst invented by Ohkawa.
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The paper reports that phonon-exciton interaction properties in experimental PL spectrum analysis and theoretical calculation of population transfers of excitonic levels.
ECO Devices Lab has developed unique White LEDs without phosphor by the original MOCVD technology. Nitride-based LED quantum structure emits white light that covers 410-770 nm. The LED light covers over 90% of the human visible region. The article entitled “Optoelectronic devices that emit warm and cool white light”.
ECO Devices Lab has developed unique White LEDs without phosphor by the original MOCVD technology. Nitride-based LED quantum structure emits white light that covers 410-770 nm. The LED light covers over 90% of the human visible region. The article entitled “KAUST Researchers Develop New Approach to Fabricate White-Light LEDs”.
A single semiconducting material can produce white light by emitting light across the visible spectrum.
ECO Devices Lab has developed unique White LEDs without phosphor by the original MOCVD technology. Nitride-based LED quantum structure emits white light that covers 410-770 nm. The LED light covers over 90% of the human visible region. The article entitled “Optoelectronic devices that emit warm and cool white light”.
ECO Devices Lab has developed unique White LEDs without phosphor by the original MOCVD technology. Nitride-based LED quantum structure emits white light that covers 410-770 nm. The LED light covers over 90% of the human visible region. The article entitled “Optoelectronic devices that emit warm and cool white light”.
ECO Devices Lab has developed unique White LEDs without phosphor by the original MOCVD technology. Nitride-based LED quantum structure emits white light that covers 410-770 nm. The LED light covers over 90% of the human visible region. The article entitled “Optoelectronic devices that emit warm and cool white light”.
Red LEDs created by ECO Devices Lab show excellent performance. A key technology at KAUST is an original metalorganic vapor-phase epitaxy (MOVPE) technology.
KAUST Discovery Issue 10 (August 31, 2020) / Fall semester 2020. p. 32-33
Prof. Ohkawa gave an online invited talk about AlGaN-MOVPE growth simulation. The talk explained the chemical process of nitride semiconductors’ MOVPE growth.
http://cvd.jpn.org/future/
Prof. Ohkawa gave an online invited talk about strain-compensated InGaN MQWs-based red LEDs at OPIC2020 (Optics & Photonics Taiwan International Conference).
https://optic2020.conf.tw/site/page.aspx?pid=20&sid=1350&lang=en
ECO Devices Lab and ALLOS will develop a key technology for micro-LED displays. That is nitride-based red LEDs using synergy with GaN-on-Si technology. The title of this article is “Micro-LED displays: new opportunities for nitride-based red LED technologies”.