Multifunctional Phosphor with High-Efficient Near-Infrared Emission Based on Antimony-Zinc Halides.
Tao HuangZiXuan WangTongzhou LiXiaodong ShenWeizheng LiangQuan NiuXianci ZhongBingsuo ZouPublished in: ACS applied materials & interfaces (2024)
Metal halide-based broadband near-infrared (NIR) luminescent materials face problems such as complicated preparation, high cost, low photoluminescence quantum yield, and high excitation energy. Here, incorporating Sb 3+ and Br - into (C 20 H 20 P) 2 ZnCl 4 crystals allowed for the achievement of efficient broadband near-infrared emission under 400 nm excitation while maintaining satisfactory environmental and thermal stability. The compounds exhibit a broad range of emission bands from 550 to 1050 nm, with a photoluminescence quantum yield of 93.57%. This is a groundbreaking achievement for organic-inorganic hybrid metal halide NIR luminescent materials. The near-infrared emission is suggested to originate from [SbX 5 ] 2- , as supported by the femtosecond transient absorption spectra and density-functional theory calculations. This phosphor-based NIR LEDs successfully demonstrate potential applications in night vision, medical imaging, information encryption, and anticounterfeiting.
Keyphrases
- energy transfer
- density functional theory
- photodynamic therapy
- light emitting
- quantum dots
- molecular dynamics
- fluorescence imaging
- drug release
- drug delivery
- healthcare
- fluorescent probe
- high speed
- high resolution
- mental health
- sensitive detection
- solid state
- depressive symptoms
- physical activity
- human health
- risk assessment
- subarachnoid hemorrhage
- sleep quality
- solid phase extraction