Synthesis and Photoluminescence Properties of a Novel Red-Emitting Na2Y2Ti3O10:Eu3+,Sm3+ Phosphor for White-Light-Emitting Diodes

Synthesis and Photoluminescence Properties of a Novel Red-Emitting Na2Y2Ti3O10:Eu3+,Sm3+ Phosphor for White-Light-Emitting Diodes

A novel red-emitting Na2Y2Ti3O10:Eu3+,Sm3+ phosphor was synthesized for the first time, and its photoluminescence (PL) properties were investigated for application to white-light-emitting diodes (W-LEDs). The Na2Y1Eu1Ti3O10 phosphor showed a 3-fold higher PL intensity compared to that of a commercia...

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Veröffentlicht in:Journal of physical chemistry. C 2011-12, Vol.115 (49), p.24334-24340
Hauptverfasser: Kang, Dongseok, Yoo, Hyoung Sun, Jung, Sang Hoon, Kim, Hyunki, Jeon, Duk Young
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Sprache:eng ; jpn
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C: Electron Transport, Optical and Electronic Devices, Hard Matter
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container_issue 49
container_start_page 24334
container_title Journal of physical chemistry. C
container_volume 115
creator Kang, Dongseok
Yoo, Hyoung Sun
Jung, Sang Hoon
Kim, Hyunki
Jeon, Duk Young
description A novel red-emitting Na2Y2Ti3O10:Eu3+,Sm3+ phosphor was synthesized for the first time, and its photoluminescence (PL) properties were investigated for application to white-light-emitting diodes (W-LEDs). The Na2Y1Eu1Ti3O10 phosphor showed a 3-fold higher PL intensity compared to that of a commercial red-emitting Y2O2S:Eu3+ phosphor under 396 nm irradiation. Sm3+ ions were introduced as a sensitizer, and they increased the PL intensity by up to 35% under 410 nm irradiation. The effects of introducing the sensitizer were investigated by measuring the quantum efficiencies and the time-resolved PL decay curves. The Na2Y1Eu1Ti3O10 phosphor exhibited remarkable resistance to thermal quenching, and a W-LED comprising the phosphor showed bright white emission with a color rendering index (R a) of 83, a color temperature of 5556 K, and Commission Internationale de I’Eclairage (CIE) color coordinates of (0.3306, 0.3754).
doi_str_mv 10.1021/jp202742m
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title Synthesis and Photoluminescence Properties of a Novel Red-Emitting Na2Y2Ti3O10:Eu3+,Sm3+ Phosphor for White-Light-Emitting Diodes
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