title: UV-Vis-NIR luminescence properties and energy transfer mechanism of LiSrPO4:Eu2+, Pr3+ suitable for solar spectral convertor.
abstract: An efficient near-infrared (NIR) phosphor LiSrPO(4):Eu(2+), Pr(3+) is synthesized by solid-state reaction and systematically investigated using x-ray diffraction, diffuse reflection spectrum, photoluminescence spectra at room temperature and 3 K, and the decay curves. The UV-Vis-NIR energy transfer mechanism is proposed based on these results. The results demonstrate Eu(2+) can be an efficient sensitizer for harvesting UV photon and greatly enhancing the NIR emission of Pr(3+) between 960 and 1060 nm through efficient energy feeding by allowed 4f-5d absorption of Eu(2+) with high oscillator strength. Eu(2+)/Pr(3+) may be an efficient donor-acceptor pair as solar spectral converter for Si solar cells.
authors.affiliation: Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Chunmeng
authors.initials: C
authors.lastname: Liu
authors.forename: Jinke
authors.initials: J
authors.lastname: Tang
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Kuang
authors.forename: Mingmei
authors.initials: M
authors.lastname: Wu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Su
mesh_terms: D011211:Electric Power Supplies; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007259:Infrared Rays; D008094:Lithium / Q000737:chemistry*; D008163:Luminescent Measurements / Q000295:instrumentation*; D012993:Solar Energy; D014466:Ultraviolet Rays
chemical_list: D008094:Lithium