Near-ultraviolet LED of the External Quantum Efficiency Over 45% and its Application to High-color Rendering Phosphor Conversion White LEDs

Near-ultraviolet LED of the External Quantum Efficiency Over 45% and its Application to High-color Rendering Phosphor Conversion White LEDs

Highly luminous efficiency and color rendering index (CRI) of 70 lm/W and 95 under low correlated color temperature (CCT) of 3177 K has been obtained by phosphor conversion (PC) white light-emitting diodes (LEDs) using near-ultra violet (n-UV) LEDs with the external quantum efficiency (EQE) of 46.7%...

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Veröffentlicht in:Journal of Light & Visual Environment 2008, Vol.32(1), pp.39-42
Hauptverfasser: SAKUTA, Hiroaki, FUKUI, Takeshi, MIYACHI, Tsutomu, KAMON, Kunihito, HAYASHI, Hideki, NAKAMURA, Nobutaka, UCHIDA, Yuji, KURAI, Satoshi, TAGUCHI, Tsunemasa
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external quantum efficiency
luminous efficacy
near-ultraviolet LED
phosphor conversion white LED
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container_end_page 42
container_issue 1
container_start_page 39
container_title Journal of Light & Visual Environment
container_volume 32
creator SAKUTA, Hiroaki
FUKUI, Takeshi
MIYACHI, Tsutomu
KAMON, Kunihito
HAYASHI, Hideki
NAKAMURA, Nobutaka
UCHIDA, Yuji
KURAI, Satoshi
TAGUCHI, Tsunemasa
description Highly luminous efficiency and color rendering index (CRI) of 70 lm/W and 95 under low correlated color temperature (CCT) of 3177 K has been obtained by phosphor conversion (PC) white light-emitting diodes (LEDs) using near-ultra violet (n-UV) LEDs with the external quantum efficiency (EQE) of 46.7%. The homogeneous spatial color uniformity on chromaticity of PC white LEDs excited by n-UV LEDs are particularly adequate to the general lighting applications.
doi_str_mv 10.2150/jlve.32.39
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; Open Access Titles of Japan
subjects external quantum efficiency
luminous efficacy
near-ultraviolet LED
phosphor conversion white LED
title Near-ultraviolet LED of the External Quantum Efficiency Over 45% and its Application to High-color Rendering Phosphor Conversion White LEDs
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