Cr3+ and Yb3+ co-doped perovskite-like phosphor with improved thermal stability by efficient energy transfer DOI Creative Commons
Meijuan Zheng,

Xiaoling Dong,

Dan Wu

и другие.

AIP Advances, Год журнала: 2024, Номер 14(5)

Опубликована: Май 1, 2024

With the development of white light-emitting diode (LED) technology, near-infrared (NIR) phosphor-converted (pc) LED is becoming a new emerging light source. However, due to lack long wavelength components phosphors, application NIR pc-LED restricted. In this work, continuous ultra-broadband emission without gap in 850–950 nm region has been realized Mg4Nb2O9 (MNO):Cr3+, Yb3+ phosphor. Meanwhile, when compared MNO:Cr3+, an improved internal quantum efficiency (from 55.4% 72.6%) and thermal stability 39% 63% at 100 °C) have obtained for Yb3+, which attributed combined effect efficient energy transfer from Cr3+ its nearest unique levels Yb3+. The performances fabricated devices by combining with 460 chips were also given, results demonstrate that phosphor may potential practical pc-LED.

Язык: Английский

Optimization of near-infrared luminescence performance in Cr3+-doped double perovskite Sr2ScTaO6 phosphor by Nb5+ ion substitution DOI

Mingxiao Han,

Zhexuan Gao,

Yi Zhang

и другие.

Journal of Alloys and Compounds, Год журнала: 2024, Номер 995, С. 174780 - 174780

Опубликована: Май 9, 2024

Язык: Английский

Процитировано

5
Enhanced Thermally Stability and Broadened Emission for Gd3Ga5O12:Cr3+ Phosphors via Si3N4 Substitution DOI Open Access
SunYueZi Chen,

Ziwei Lu,

Yongfu Liu

и другие.

Laser & Photonics Review, Год журнала: 2024, Номер unknown

Опубликована: Авг. 20, 2024

Abstract Far‐red (FR) and near‐infrared (NIR) spectroscopy technologies have attracted extensive attention. How to obtain luminescent materials suitable FR‐NIR phosphor‐converted light‐emitting diodes (pc‐LEDs) is a crucial challenge. Herein, Si 3 N 4 ‐substitution strategy employed regulate the luminescence of Gd Ga 5 O 12 :Cr 3+ (GGG:Cr ) phosphors. The bandwidth GGG:Cr 95 nm, then it broadened 116 nm due ‐substitution. Furthermore, at 423 K thermal stability enhanced 98.7% that room temperature, which higher than reported 92.7%@423 for ‐free sample. intensity optimal specimen elevated 2.9 times compared with sample sintered same condition. FR pc‐LED manufactured by using optimized sample, its output power 47.1 mW conversion efficiency 15.9% driven 100 mA. This work paves new way design high‐performance NIR

Язык: Английский

Процитировано

5
Structure regulation and luminescence improvement of Gd3Ga5O12:Cr3+: An anti-thermal quenching NIR phosphor for multifunctional applications DOI
Bing Zhang,

Yubo Feng,

Ying‐Kai Fu

и другие.

Ceramics International, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

5
Cr3+-doped garnet-type Ca3Al2Ge3O12 phosphors with high color purity and high quantum yield for plant growth lighting DOI

Lanxiu Xiao,

Jina Ding,

Xiaohua Li

и другие.

Ceramics International, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

5
Cr3+ and Yb3+ co-doped perovskite-like phosphor with improved thermal stability by efficient energy transfer DOI Creative Commons
Meijuan Zheng,

Xiaoling Dong,

Dan Wu

и другие.

AIP Advances, Год журнала: 2024, Номер 14(5)

Опубликована: Май 1, 2024

With the development of white light-emitting diode (LED) technology, near-infrared (NIR) phosphor-converted (pc) LED is becoming a new emerging light source. However, due to lack long wavelength components phosphors, application NIR pc-LED restricted. In this work, continuous ultra-broadband emission without gap in 850–950 nm region has been realized Mg4Nb2O9 (MNO):Cr3+, Yb3+ phosphor. Meanwhile, when compared MNO:Cr3+, an improved internal quantum efficiency (from 55.4% 72.6%) and thermal stability 39% 63% at 100 °C) have obtained for Yb3+, which attributed combined effect efficient energy transfer from Cr3+ its nearest unique levels Yb3+. The performances fabricated devices by combining with 460 chips were also given, results demonstrate that phosphor may potential practical pc-LED.

Язык: Английский

Процитировано

4