https://scholars.lib.ntu.edu.tw/handle/123456789/606925
標題: | Ni2+-Doped Garnet Solid-Solution Phosphor-Converted Broadband Shortwave Infrared Light-Emitting Diodes toward Spectroscopy Application | 作者: | Yuan L Jin Y Wu H Deng K Qu B Chen L Hu Y Liu R.-S. RU-SHI LIU |
關鍵字: | broadband emission;Ni2+;shortwave infrared;spectroscopy;SWIR LED;Garnets;Infrared radiation;Infrared spectroscopy;Light emission;Light emitting diodes;Phosphors;Broadband emission;Infrared light emitting diodes;Infrared light-emitting diodes;Performance;Short wave infrared;Shortwave infrared light-emitting diode;Spectroscopy applications;Synergetics;Solid solutions | 公開日期: | 2022 | 卷: | 14 | 期: | 3 | 起(迄)頁: | 4265-4275 | 來源出版物: | ACS Applied Materials and Interfaces | 摘要: | Broadband shortwave infrared (SWIR) light-emitting diodes (LEDs), capable of advancing the next-generation solid-state smart invisible lighting technology, have sparked tremendous interest and will launch ground-breaking spectroscopy and instrumental applications. Nevertheless, the device performance is still suppressed by the low quantum efficiency and limited emission bandwidth of the critical phosphor layer. Herein, we report a high-performance Ni2+-doped garnet solid-solution broadband SWIR emitter centered at ?1450 nm with a large full-width at half-maximum of ?300 nm, thereby fabricating, for the first time, a directly excited Ni2+-doped garnet solid-solution phosphor-converted broadband SWIR LED device. A synergetic enhancement strategy, adding a fluxing agent and a charge compensator simultaneously, is proposed to deliver a more than 20-fold increase of the SWIR emission intensity and nearly 2-fold improvement of the thermal quenching behavior. The site occupation and mechanism behind the synergetic enhancement strategy are elucidated by a combination of experimental study and theoretical calculation. A prototype of the SWIR LED with a radiation flux of 1.25 mW is fabricated and utilized as an invisible SWIR light source to demonstrate the SWIR spectroscopy applications. This work not only opens a window to explore novel broadband SWIR phosphors but also provides a synergetic strategy to remarkably improve the performance of artificial SWIR LED light sources. ? |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123110036&doi=10.1021%2facsami.1c20084&partnerID=40&md5=ab25882e0e9b817a7da8bda7bbf03632 https://scholars.lib.ntu.edu.tw/handle/123456789/606925 |
ISSN: | 19448244 | DOI: | 10.1021/acsami.1c20084 |
顯示於: | 化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。