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Near-infrared quantum cutting in Yb3+ ion doped strontium vanadate |
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| Institution: | 1. Department of Physics, Sant Gadge Baba Amravati University, Amravati, MH 444602, India;2. Department of Physics, Toshniwal Art, Commerce and Science College, Sengoan, Hingoli, MH, India;1. Department of Chemistry, Clemson University, Clemson, SC 29634-0973, USA;2. Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC 29634-0909, USA;3. Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, Anderson, SC 29625, USA;1. Toshniwal ACS College, Sengaon, Hingoli 431542, India;2. Department of Physics, SGB Amravati University, Amravati 444602, India;3. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400085, India;1. Department of Physics, Sant Gadge Baba Amravati University, Amravati 44602, India;2. Department of Physics, Toshniwal ACS College, Sengaon, Hingoli 431542, India;3. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400094, India;1. Department of physics SGB, Amravati University, Amravati, 444602, India;2. Toshniwal College of Arts Science and Commerce, Hingoli, 431701, India |
| Abstract: | The materials Sr3?x(VO4)2:xYb were successfully synthesized by co-precipitation method varying the concentration of Yb3+ ions from 0 to 0.06 mol. It was characterize by powder X-ray powder diffraction (XRD) and surface morphology was studied by scanning electronic microscope (SEM). The photoluminescence (PL) properties were studied by spectrophotometers in near infra red (NIR) and ultra violet visible (UV–VIS) region. The Yb3+ ion doped tristrontium vanadate (Sr3(VO4)2) phosphors that can convert a photon of UV region (349 nm) into photons of NIR region (978, 996 and 1026 nm). Hence this phosphor could be used as a quantum cutting (QC) luminescent convertor in front of crystalline silicon solar cell (c-Si) panels to reduce thermalization loss due to spectral mismatch of the solar cells. The theoretical value of quantum efficiency (QE) was calculated from steady time decay measurement and the maximum efficiency approached up to 144.43%. The Sr(3?x) (VO4)2:xYb can be potentiality used for betterment of photovoltaic (PV) technology. |
| Keywords: | Luminescence Downconversion Inorganic phosphor Co-operative energy transfer Solar cells Co-precipitation |
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