当前位置：
X-MOL 学术
›
Laser Photonics Rev.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Crystallization of Na2SrGe6O14:Cr3+,Yb3+ Glass Ceramics Enabling a Watt-Level Output Power NIR-I/NIR-II Lighting Source
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2023-10-06 , DOI: 10.1002/lpor.202300784 Taoze Wang 1 , Yuzhen Wang 1, 2 , Weibin Chen 1 , Zhiguo Xia 1, 2
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2023-10-06 , DOI: 10.1002/lpor.202300784 Taoze Wang 1 , Yuzhen Wang 1, 2 , Weibin Chen 1 , Zhiguo Xia 1, 2
Affiliation
|
Near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) lighting sources are applied in non-destructive examination and illumination supplements for night monitoring. As a critical component of NIR pc-LED, NIR phosphors are required to possess a high external quantum efficiency (EQE), super thermal stability, and broadband emission to meet applications. Here, Na2SrGe6O14:Cr3+ (NSGO:Cr) glass ceramics (GC) bulk via highly crystallization from glass precursor is fabricated and demonstrates an ultrabroad emission band centered at 815 nm with a full width at half-maximum (FWHM) of 214 nm and a high EQE of 49.2%. Moreover, Yb3+ co-doping significantly enhances Cr3+ → Yb3+ energy transfer (ET) due to the stronger Yb3+: 2F7/2-2F5/2 absorption. Benefiting from the ET process, the Cr/Yb co-doped GC exhibits NIR-I/II emission with improved thermal stability from 30.1% to 65.0%. Furthermore, an encapsulant-free NIR GC-converted LED (GCc-LED) is prepared and exhibits 52.2 mW NIR output power with a high photoelectric conversion efficiency (PCE) of 19.4%. Under a large current of 600 mA, the NIR device exhibits a watt-level output power of 922.4 mW with a PCE of 9.1%. Compared to conventional NIR powder phosphors, NSGO:Cr/Yb GC with high performance can open up an avenue for the fabrication of high power NIR lighting sources.
中文翻译：
Na2SrGe6O14:Cr3+,Yb3+ 玻璃陶瓷的结晶实现瓦级输出功率 NIR-I/NIR-II 光源
近红外（NIR）荧光粉转换发光二极管（pc-LED）光源应用于无损检测和夜间监控的照明补充。作为近红外pc-LED的关键组件，近红外荧光粉需要具备高外量子效率（EQE）、超强热稳定性和宽带发射以满足应用需求。在这里，通过玻璃前驱体的高度结晶制备了 Na 2 SrGe 6 O 14 :Cr 3+ (NSGO:Cr) 玻璃陶瓷 (GC) 块体，并展示了中心位于 815 nm 的超宽发射带，半峰全宽 ( FWHM）为 214 nm，EQE 高达 49.2%。此外，由于更强的Yb 3+ : 2 F 7/2 - 2 F 5/2吸收，Yb 3+共掺杂显着增强了Cr 3+ → Yb 3+能量转移(ET) 。受益于 ET 工艺，Cr/Yb 共掺杂 GC 表现出 NIR-I/II 发射，热稳定性从 30.1% 提高到 65.0%。此外，还制备了一种无密封剂的近红外GC转换LED（GCc-LED），其近红外输出功率为52.2 mW，光电转换效率（PCE）高达19.4%。在600 mA的大电流下，NIR器件表现出922.4 mW的瓦级输出功率，PCE为9.1%。与传统的近红外粉末荧光粉相比，高性能的NSGO:Cr/Yb GC可以为高功率近红外光源的制造开辟一条途径。
更新日期：2023-10-06
中文翻译：
Na2SrGe6O14:Cr3+,Yb3+ 玻璃陶瓷的结晶实现瓦级输出功率 NIR-I/NIR-II 光源
近红外（NIR）荧光粉转换发光二极管（pc-LED）光源应用于无损检测和夜间监控的照明补充。作为近红外pc-LED的关键组件，近红外荧光粉需要具备高外量子效率（EQE）、超强热稳定性和宽带发射以满足应用需求。在这里，通过玻璃前驱体的高度结晶制备了 Na 2 SrGe 6 O 14 :Cr 3+ (NSGO:Cr) 玻璃陶瓷 (GC) 块体，并展示了中心位于 815 nm 的超宽发射带，半峰全宽 ( FWHM）为 214 nm，EQE 高达 49.2%。此外，由于更强的Yb 3+ : 2 F 7/2 - 2 F 5/2吸收，Yb 3+共掺杂显着增强了Cr 3+ → Yb 3+能量转移(ET) 。受益于 ET 工艺，Cr/Yb 共掺杂 GC 表现出 NIR-I/II 发射，热稳定性从 30.1% 提高到 65.0%。此外，还制备了一种无密封剂的近红外GC转换LED（GCc-LED），其近红外输出功率为52.2 mW，光电转换效率（PCE）高达19.4%。在600 mA的大电流下，NIR器件表现出922.4 mW的瓦级输出功率，PCE为9.1%。与传统的近红外粉末荧光粉相比，高性能的NSGO:Cr/Yb GC可以为高功率近红外光源的制造开辟一条途径。
京公网安备 11010802027423号