Ni2+-Doped Garnet Solid-Solution Phosphor-Converted Broadband Shortwave Infrared Light-Emitting Diodes toward Spectroscopy Application

• DOI: 10.1021/acsami.1c20084
• Publication Date: 2022-01-13T21:14:05Z
• Authors: Lifang Yuan; Yahong Jin; Haoyi Wu; Kaiyuan Deng; Bingyan Qu; Li Chen; Yihua Hu; Ru-Shi Liu
• Keywords: Solid-State Lighting; Night vision

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 instrumental applications. Nevertheless, device performance is still suppressed by low quantum efficiency limited emission bandwidth critical phosphor layer. Herein, we report a high-performance Ni2+-doped garnet solid-solution broadband SWIR emitter centered at ∼1450 nm with large full-width half-maximum ∼300 nm, thereby fabricating, for first time, directly excited phosphor-converted LED device. A synergetic enhancement strategy, adding fluxing agent charge compensator simultaneously, proposed to deliver more than 20-fold increase intensity nearly 2-fold improvement thermal quenching behavior. The site occupation mechanism behind strategy are elucidated combination experimental study theoretical calculation. prototype radiation flux 1.25 mW fabricated utilized as an light source demonstrate This work not only opens window explore novel phosphors but also provides remarkably improve artificial sources.