A high quantum efficiency plant growth LED by using a deep-red-emitting α-Al2O3:Cr3+ phosphor

被引：42

作者：

Van Quang, Nguyen ^{[1
]}

Thi Huyen, Nguyen ^{[1
]}

Tu, Nguyen ^{[2
,3
]}

Quang Trung, Do ^{[2
,3
]}

Duc Anh, Dao ^{[4
]}

Tran, Manh Trung ^{[4
]}

Hung, Nguyen Duy ^{[5
]}

Viet, Dao Xuan ^{[5
]}

Huy, Pham Thanh ^{[3
,4
]}

机构：

[1] Hanoi Pedag Univ 2, Dept Chem, Phuc Yen, Vinh Phuc, Vietnam

[2] Phenikaa Univ, Fac Fundamental Sci, Hanoi 10000, Vietnam

[3] A&A Green Phoenix Grp, Phenikaa Res & Technol Inst PRATI, 167 Hoang Ngan, Hanoi 10000, Vietnam

[4] Phenikaa Univ, Fac Mat Sci & Engn, Hanoi 10000, Vietnam

[5] Hanoi Univ Sci & Technol HUST, Adv Inst Sci & Technol AIST, 01 Dai Co Viet St, Hanoi 10000, Vietnam

来源：

DALTON TRANSACTIONS | 2021年 / 50卷 / 36期

关键词：

LUMINESCENT PROPERTIES; PHOTOLUMINESCENT PROPERTIES; COMBUSTION SYNTHESIS; THERMAL-STABILITY; HIGH-POWER; IN-GLASS; CR3+; CRYSTAL; LIGHT; TEMPERATURE;

D O I：

10.1039/d1dt00115a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Although it has been extensively studied for decades, the alpha-Al2O3:Cr3+ phosphor has rarely been investigated for horticultural lighting. In this work, for the first time, a prototype of a plant growth light-emitting diode (LED) has been fabricated by coating a deep-red-emitting alpha-Al2O3:Cr3+ phosphor onto a near-ultraviolet (NUV) chip. The alpha-Al2O3:Cr3+ phosphor, synthesized by a co-precipitation method and annealed at 1500 degrees C for 2 h, emits an outstanding narrow peak at 695 nm. The alpha-Al2O3:0.6%Cr3+ phosphor shows a high activation energy of 0.29 eV, a long lifetime of 3.4 ms, and a superior color purity of 100%. The chromatic coordinates and the QE value of the red LED obtained by coating an alpha-Al2O3:0.6%Cr3+ phosphor on a NUV chip are (x = 0.5650, y = 0.2429) and 87.1%, respectively.

引用

页码：12570 / 12582

页数：13

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