Synthesis and Luminescence Characteristics of Cr3+ doped Y3Al5O12 Phosphors

Brenda A. Smith; Reza T. Dabestani; Linda A. Lewis; Cyril V. Thompson; Case T. Collins; Tolga Aytug

doi:10.2172/1223077

Synthesis and Luminescence Characteristics of Cr³⁺ doped Y₃Al₅O₁₂ Phosphors

Brenda A. Smith
, Reza T. Dabestani
, Linda A. Lewis
, Cyril V. Thompson
, Case T. Collins
, Tolga Aytug

Research output: Other contribution › Technical Report

Abstract

Luminescence performance of yttrium aluminum garnet (Y₃Al₅O₁₂) phosphors as a function of Cr³⁺ concentration has been investigated via two different wet-chemical synthesis techniques, direct- (DP) and hydrothermal-precipitation (HP). Using either of these methods, the red-emitting phosphor [Y₃Al_5-xCr_xO₁₂ (YAG: Cr³⁺)] showed similar photoluminescence (PL) intensities once the dopant concentration was optimized. Specifically, the YAG: Cr³⁺ PL emission intensity reached a maximum at Cr3+ concentrations of x = 0.02 (0.4 at.%) and x = 0.13 (2.6 at.%) for DP and HP processed samples, respectively. The results indicated the strong influence of the processing method on the optimized YAG: Cr³⁺ performance, where a more effective energy transfer rate between a pair of Cr3+ activators at low concentration levels was observed by using the DP synthesis technique. Development of a highly efficient phosphor, using a facile synthesis approach, could significantly benefit consumer and industrial applications by improving the operational efficiency of a wide range of practical devices.

Original language	English
Place of Publication	United States
DOIs	https://doi.org/10.2172/1223077
State	Published - 2015

Keywords

chromium
dopant concentration
Y3Al5O12
luminescence
cathodoluminescence

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10.2172/1223077

Cite this

@misc{58117bfd6380468283d6e290dae9de2d,

title = "Synthesis and Luminescence Characteristics of Cr3+ doped Y3Al5O12 Phosphors",

abstract = "Luminescence performance of yttrium aluminum garnet (Y3Al5O12) phosphors as a function of Cr3+ concentration has been investigated via two different wet-chemical synthesis techniques, direct- (DP) and hydrothermal-precipitation (HP). Using either of these methods, the red-emitting phosphor [Y3Al5-xCrxO12 (YAG: Cr3+)] showed similar photoluminescence (PL) intensities once the dopant concentration was optimized. Specifically, the YAG: Cr3+ PL emission intensity reached a maximum at Cr3+ concentrations of x = 0.02 (0.4 at.\%) and x = 0.13 (2.6 at.\%) for DP and HP processed samples, respectively. The results indicated the strong influence of the processing method on the optimized YAG: Cr3+ performance, where a more effective energy transfer rate between a pair of Cr3+ activators at low concentration levels was observed by using the DP synthesis technique. Development of a highly efficient phosphor, using a facile synthesis approach, could significantly benefit consumer and industrial applications by improving the operational efficiency of a wide range of practical devices.",

keywords = "chromium, dopant concentration, Y3Al5O12, luminescence, cathodoluminescence",

author = "Smith, \{Brenda A.\} and Dabestani, \{Reza T.\} and Lewis, \{Linda A.\} and Thompson, \{Cyril V.\} and Collins, \{Case T.\} and Tolga Aytug",

year = "2015",

doi = "10.2172/1223077",

language = "English",

type = "Other",

}

TY - GEN

T1 - Synthesis and Luminescence Characteristics of Cr3+ doped Y3Al5O12 Phosphors

AU - Smith, Brenda A.

AU - Dabestani, Reza T.

AU - Lewis, Linda A.

AU - Thompson, Cyril V.

AU - Collins, Case T.

AU - Aytug, Tolga

PY - 2015

Y1 - 2015

N2 - Luminescence performance of yttrium aluminum garnet (Y3Al5O12) phosphors as a function of Cr3+ concentration has been investigated via two different wet-chemical synthesis techniques, direct- (DP) and hydrothermal-precipitation (HP). Using either of these methods, the red-emitting phosphor [Y3Al5-xCrxO12 (YAG: Cr3+)] showed similar photoluminescence (PL) intensities once the dopant concentration was optimized. Specifically, the YAG: Cr3+ PL emission intensity reached a maximum at Cr3+ concentrations of x = 0.02 (0.4 at.%) and x = 0.13 (2.6 at.%) for DP and HP processed samples, respectively. The results indicated the strong influence of the processing method on the optimized YAG: Cr3+ performance, where a more effective energy transfer rate between a pair of Cr3+ activators at low concentration levels was observed by using the DP synthesis technique. Development of a highly efficient phosphor, using a facile synthesis approach, could significantly benefit consumer and industrial applications by improving the operational efficiency of a wide range of practical devices.

AB - Luminescence performance of yttrium aluminum garnet (Y3Al5O12) phosphors as a function of Cr3+ concentration has been investigated via two different wet-chemical synthesis techniques, direct- (DP) and hydrothermal-precipitation (HP). Using either of these methods, the red-emitting phosphor [Y3Al5-xCrxO12 (YAG: Cr3+)] showed similar photoluminescence (PL) intensities once the dopant concentration was optimized. Specifically, the YAG: Cr3+ PL emission intensity reached a maximum at Cr3+ concentrations of x = 0.02 (0.4 at.%) and x = 0.13 (2.6 at.%) for DP and HP processed samples, respectively. The results indicated the strong influence of the processing method on the optimized YAG: Cr3+ performance, where a more effective energy transfer rate between a pair of Cr3+ activators at low concentration levels was observed by using the DP synthesis technique. Development of a highly efficient phosphor, using a facile synthesis approach, could significantly benefit consumer and industrial applications by improving the operational efficiency of a wide range of practical devices.

KW - chromium

KW - dopant concentration

KW - Y3Al5O12

KW - luminescence

KW - cathodoluminescence

U2 - 10.2172/1223077

DO - 10.2172/1223077

M3 - Technical Report

CY - United States