TY - JOUR
T1 - (Ba,Sr)Y2Si2Al2O2N 5:Eu2+
T2 - A novel near-ultraviolet converting green phosphor for white light-emitting diodes
AU - Liu, Wei Ren
AU - Yeh, Chiao Wen
AU - Huang, Chien Hao
AU - Lin, Chun Che
AU - Chiu, Yi Chen
AU - Yeh, Yao Tsung
AU - Liu, Ru Shi
PY - 2011/3/21
Y1 - 2011/3/21
N2 - A highly intense green-emitting phosphor BaY2Si 2Al2O2N5:Eu2+ (BYN:Eu2+) peaking at 511 nm was synthesized by a solid state reaction. The structure refinement, luminescence properties of BYN:Eu 2+ phosphors as well as their thermal quenching and the fabrication of white-light-emitting diodes (W-LEDs) were firstly investigated. By partially substituting Ba by Sr, namely (Ba,Sr)Y2Si2Al 2O2N5:Eu2+ (BSYN:Eu2+), the emission peak was shifted to 565 nm, giving a yellow-orange color, due to the splitting of the 5d energy level. By utilizing a mixture of blue-emitting BaMgAl10O17:Eu2+, green-emitting BYN:Eu 2+ and red-emitting CaAlSiN3:Eu2+ phosphors as light converters, an intense white GaN-based n-UV-LED (380 nm) was fabricated to a exhibit good color-rendering index Ra of 84.5 at a correlated color temperature of 5089 K and CIE coordinates of (0.3425, 0.3478). Based on these results, we are currently evaluating the potential application of BYN:Eu2+ as a green-emitting near-UV convertible phosphor.
AB - A highly intense green-emitting phosphor BaY2Si 2Al2O2N5:Eu2+ (BYN:Eu2+) peaking at 511 nm was synthesized by a solid state reaction. The structure refinement, luminescence properties of BYN:Eu 2+ phosphors as well as their thermal quenching and the fabrication of white-light-emitting diodes (W-LEDs) were firstly investigated. By partially substituting Ba by Sr, namely (Ba,Sr)Y2Si2Al 2O2N5:Eu2+ (BSYN:Eu2+), the emission peak was shifted to 565 nm, giving a yellow-orange color, due to the splitting of the 5d energy level. By utilizing a mixture of blue-emitting BaMgAl10O17:Eu2+, green-emitting BYN:Eu 2+ and red-emitting CaAlSiN3:Eu2+ phosphors as light converters, an intense white GaN-based n-UV-LED (380 nm) was fabricated to a exhibit good color-rendering index Ra of 84.5 at a correlated color temperature of 5089 K and CIE coordinates of (0.3425, 0.3478). Based on these results, we are currently evaluating the potential application of BYN:Eu2+ as a green-emitting near-UV convertible phosphor.
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U2 - 10.1039/c0jm03573d
DO - 10.1039/c0jm03573d
M3 - Article
AN - SCOPUS:79952267290
SN - 0959-9428
VL - 21
SP - 3740
EP - 3744
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
IS - 11
ER -