Khan, Sovann Park, Bo-In Han, Joon Soo Lee, Seung Yong Cho, So-Hye 2024-01-19T22:03:59Z 2024-01-19T22:03:59Z 2021-09-03 2018-08 0922-6168 https://pubs.kist.re.kr/handle/201004/121100 Near-infrared (NIR) quantum cutting phosphors serve as a potential material for fabricating photovoltaic spectral convertors. In many cases, quantum cutting phosphors are obtained via a wet chemical method coupled with a post-annealing treatment-a very costly process. In this report, we used continuous flame spray pyrolysis (FSP) for fabricating Y2O3:Tb3+-Yb3+ quantum-cutting phosphors without any post-treatment. Based on characterizations by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction, we found that as-synthesized Y2O3:Tb3+-Yb3+ phosphors exhibit hollow and shell-like micro-structures composed of highly crystalline and pure cubic-phase nanoparticles (< 50 nm). Photoluminescence studies of the phosphors revealed that NIR emissions appeared with the introduction of Yb to Y2O3:Tb3+. Phosphor size was successfully controlled by managing the concentration of the metal precursor solution for FSP. The Y2O3:Tb3+-Yb3+ phosphors were then embedded into transparent poly-ethylene-co-vinyl acetate (EVA) film to form a spectral convertor. The composite films of Y2O3:Tb3+-Yb3+ phosphors and poly-EVA were found to be highly transparent in the visible range (> 500 nm), making them suitable as spectral photovoltaic convertors. English SPRINGER SPRAY-PYROLYSIS NANOPARTICLES PHOTOLUMINESCENCE Flame synthesized Y2O3:Tb3+-Yb3+ phosphors as spectral convertors for solar cells Article 10.1007/s11164-018-3270-y 1 RESEARCH ON CHEMICAL INTERMEDIATES, v.44, no.8, pp.4619 - 4632 RESEARCH ON CHEMICAL INTERMEDIATES 44 8 4619 4632 scie scopus 000439954400004 2-s2.0-85042606567 Chemistry, Multidisciplinary Chemistry Article SPRAY-PYROLYSIS NANOPARTICLES PHOTOLUMINESCENCE Nanophosphor Spectral converter Luminescence Solar cell Flame spray pyrolysis Quantum cutting