Li2SrSiO4:Ce3+, Pr3+ Phosphor with Blue, Red, and Near‐Infrared Emissions Used for Plant Growth LED

• DOI: 10.1111/jace.13952
• Publication Date: 2015-10-03T05:39:45Z
• Authors: Jiayu Chen; Chongfeng Guo; Zheng Yang; Ting Li; Jin Zhao
• Keywords: 01 natural sciences; 7. Clean energy; 0104 chemical sciences

Ce 3+ /Pr codoped Li 2 SrSiO 4 ( LSS ) phosphors with blue, red, and near‐infrared NIR tri‐emission have been prepared via a high‐temperature solid‐state reaction method. Under the excitation of 200 to 400 nm near‐ultraviolet n ‐ UV ), photoluminescence PL spectra are composed visible two parts. The former exhibits blue red emission bands centered at around 428 from 5 d –4 f transition 611 1 D → 3 H Pr , those overlap photosynthesis action plants absorption chlorophylls carotenoids. While later presents broad band peaking near 1039 caused by G matching bacteriochlorophyll. Their intensity ratios (B: R: could be tuned altering relative concentration in meet requirements multifarious bacteria. efficient energy transfer takes place host, which ascribed an exchange interaction according decay curves phosphors. Results suggest that present : great potential applications plant growth LED .