Tunable photoluminescence and energy transfer of YBO3:Tb3+, Eu3+ forwhite light emitting diodes

Xianwen Zhang; Zhi Zhao; Xin Zhang; Archis Marathe; David B. Cordes; Brandon Weeks; Jharna Chaudhuri

Tunable photoluminescence and energy transfer of YBO3:Tb3+, Eu3+ forwhite light emitting diodes

Xianwen Zhang, Zhi Zhao, Xin Zhang, Archis Marathe, David B. Cordes, Brandon Weeks, Jharna Chaudhuri

Research output: Contribution to journal › Article › peer-review

Abstract

Rare-earth (Eu3+, Tb3+) ion co-doped YBO3 phosphors with a morphology of uniform flower-like assembly are fabricated by a facile hydrothermal method without the use of surfactant, organic ligands, or further sintering treatment. Photoluminescence (PL) studies have demonstrated that under the excitation of 365 nm ultraviolet (UV) light, YBO3: Tb3+, Eu3+ emits a white light, including three emissions: a blue band attributed to self-trapped excitons (STEs), a green band due to the Tb3+ transition of D-5(4)-F-7(j) (j = 6, 5, 4, and 3), and a red band due to the Eu3+ transition of D-5(0)-F-7(j) (j = 0, 1, 2, 3, and 4). Energy transfers from host YBO3 to Tb3+, and Eu3+ and Tb3+ to Eu3+, as well as tunable emission by varying the relative doping ratios are demonstrated. The combination of blue emission from STEs with green and red emissions from activators provides a novel and efficient technique to make white light emitting diodes (WLEDs).

Original language	English
Pages (from-to)	7202-7207
Journal	Journal of Materials Chemistry C
State	Published - 2013

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@article{d3fe1ec14db747f099fe14d56bd368a6,

title = "Tunable photoluminescence and energy transfer of YBO3:Tb3+, Eu3+ forwhite light emitting diodes",

abstract = "Rare-earth (Eu3+, Tb3+) ion co-doped YBO3 phosphors with a morphology of uniform flower-like assembly are fabricated by a facile hydrothermal method without the use of surfactant, organic ligands, or further sintering treatment. Photoluminescence (PL) studies have demonstrated that under the excitation of 365 nm ultraviolet (UV) light, YBO3: Tb3+, Eu3+ emits a white light, including three emissions: a blue band attributed to self-trapped excitons (STEs), a green band due to the Tb3+ transition of D-5(4)-F-7(j) (j = 6, 5, 4, and 3), and a red band due to the Eu3+ transition of D-5(0)-F-7(j) (j = 0, 1, 2, 3, and 4). Energy transfers from host YBO3 to Tb3+, and Eu3+ and Tb3+ to Eu3+, as well as tunable emission by varying the relative doping ratios are demonstrated. The combination of blue emission from STEs with green and red emissions from activators provides a novel and efficient technique to make white light emitting diodes (WLEDs).",

author = "Xianwen Zhang and Zhi Zhao and Xin Zhang and Archis Marathe and Cordes, {David B.} and Brandon Weeks and Jharna Chaudhuri",

year = "2013",

language = "English",

pages = "7202--7207",

journal = "Journal of Materials Chemistry C",

issn = "2050-7534",

}

TY - JOUR

T1 - Tunable photoluminescence and energy transfer of YBO3:Tb3+, Eu3+ forwhite light emitting diodes

AU - Zhang, Xianwen

AU - Zhao, Zhi

AU - Zhang, Xin

AU - Marathe, Archis

AU - Cordes, David B.

AU - Weeks, Brandon

AU - Chaudhuri, Jharna

PY - 2013

Y1 - 2013

N2 - Rare-earth (Eu3+, Tb3+) ion co-doped YBO3 phosphors with a morphology of uniform flower-like assembly are fabricated by a facile hydrothermal method without the use of surfactant, organic ligands, or further sintering treatment. Photoluminescence (PL) studies have demonstrated that under the excitation of 365 nm ultraviolet (UV) light, YBO3: Tb3+, Eu3+ emits a white light, including three emissions: a blue band attributed to self-trapped excitons (STEs), a green band due to the Tb3+ transition of D-5(4)-F-7(j) (j = 6, 5, 4, and 3), and a red band due to the Eu3+ transition of D-5(0)-F-7(j) (j = 0, 1, 2, 3, and 4). Energy transfers from host YBO3 to Tb3+, and Eu3+ and Tb3+ to Eu3+, as well as tunable emission by varying the relative doping ratios are demonstrated. The combination of blue emission from STEs with green and red emissions from activators provides a novel and efficient technique to make white light emitting diodes (WLEDs).

AB - Rare-earth (Eu3+, Tb3+) ion co-doped YBO3 phosphors with a morphology of uniform flower-like assembly are fabricated by a facile hydrothermal method without the use of surfactant, organic ligands, or further sintering treatment. Photoluminescence (PL) studies have demonstrated that under the excitation of 365 nm ultraviolet (UV) light, YBO3: Tb3+, Eu3+ emits a white light, including three emissions: a blue band attributed to self-trapped excitons (STEs), a green band due to the Tb3+ transition of D-5(4)-F-7(j) (j = 6, 5, 4, and 3), and a red band due to the Eu3+ transition of D-5(0)-F-7(j) (j = 0, 1, 2, 3, and 4). Energy transfers from host YBO3 to Tb3+, and Eu3+ and Tb3+ to Eu3+, as well as tunable emission by varying the relative doping ratios are demonstrated. The combination of blue emission from STEs with green and red emissions from activators provides a novel and efficient technique to make white light emitting diodes (WLEDs).

M3 - Article

SP - 7202

EP - 7207

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

SN - 2050-7534

ER -