Talane, TEMbule, PSNoto, LLShingange, KatekaniMhlongo, Gugu HMothudi, BMDhlamini, MS2018-11-292018-11-292018-12Talane, T.E., Mbule, P.S., Noto, L.L., Shingange, K., Mhlongo, G.H., Mothudi, B.M. and Dhlamini, M.S. 2018. Sol-gel preparation and characterization of Er3+ doped TiO2 luminescent nanoparticles. Materials Research Bulletin, vol 108, pp 234-2410025-54081873-4227https://www.sciencedirect.com/science/article/pii/S0025540818314405?via%3Dihubhttp://hdl.handle.net/10204/10557Copyright: 2018 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Materials Research Bulletin, vol 108, pp 234-241The present paper reports on down-and up-conversion luminescence behaviour of sol-gel derived erbium doped titanium dioxide with anatase structure. Through combined structural, optical and electron microscope analysis, effective and influence of Er(sup)3+ doping into TiO(sub)2 lattice has been demonstrated using X-Ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and optical reflectance spectra. XRD results showed only anatase diffraction peaks of TiO(sub)2, indicating the formation of a pure anatase phase even after Er(sup)3+ incorporation into TiO(sub)2 lattice. Selected Area Electron Diffraction (SAED) confirmed that the synthesized TiO2 nanoparticles are polycrystalline in nature which correlated well with XRD findings. Upon excitation at 320 nm, two down-conversion contributions at 378 nm and 435 nm attributed to indirect band gap and defect-related emissions, respectively were observed from both pure and Er(sup)3+ doped TiO(sub)2 nanoparticles. On the other hand, strong green up-conversion emission centred at 544 nm ascribed to (sup)4S(sub)3/2 (sup)4I(sub)15/2 transition of Er(sup)3+ was observed under 980 nm laser excitation for all Er(sup)3+ doped TiO(sub)2 samples. This result analysis brings insight on understanding of structural, optical and luminescence properties of Er(sup)3+ doped TiO(sub)2 nanoparticles for use in solar cells and bio imaging devices.enSol-gelDown-conversion luminescenceNanoparticlesTiO2:Er3+Up-conversion luminescenceArticleTalane, T., Mbule, P., Noto, L., Shingange, K., Mhlongo, G. H., Mothudi, B., & Dhlamini, M. (2018). Sol-gel preparation and characterization of Er3+ doped TiO2 luminescent nanoparticles. http://hdl.handle.net/10204/10557Talane, TE, PS Mbule, LL Noto, Katekani Shingange, Gugu H Mhlongo, BM Mothudi, and MS Dhlamini "Sol-gel preparation and characterization of Er3+ doped TiO2 luminescent nanoparticles." (2018) http://hdl.handle.net/10204/10557Talane T, Mbule P, Noto L, Shingange K, Mhlongo GH, Mothudi B, et al. Sol-gel preparation and characterization of Er3+ doped TiO2 luminescent nanoparticles. 2018; http://hdl.handle.net/10204/10557.TY - Article AU - Talane, TE AU - Mbule, PS AU - Noto, LL AU - Shingange, Katekani AU - Mhlongo, Gugu H AU - Mothudi, BM AU - Dhlamini, MS AB - The present paper reports on down-and up-conversion luminescence behaviour of sol-gel derived erbium doped titanium dioxide with anatase structure. Through combined structural, optical and electron microscope analysis, effective and influence of Er(sup)3+ doping into TiO(sub)2 lattice has been demonstrated using X-Ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and optical reflectance spectra. XRD results showed only anatase diffraction peaks of TiO(sub)2, indicating the formation of a pure anatase phase even after Er(sup)3+ incorporation into TiO(sub)2 lattice. Selected Area Electron Diffraction (SAED) confirmed that the synthesized TiO2 nanoparticles are polycrystalline in nature which correlated well with XRD findings. Upon excitation at 320 nm, two down-conversion contributions at 378 nm and 435 nm attributed to indirect band gap and defect-related emissions, respectively were observed from both pure and Er(sup)3+ doped TiO(sub)2 nanoparticles. On the other hand, strong green up-conversion emission centred at 544 nm ascribed to (sup)4S(sub)3/2 (sup)4I(sub)15/2 transition of Er(sup)3+ was observed under 980 nm laser excitation for all Er(sup)3+ doped TiO(sub)2 samples. This result analysis brings insight on understanding of structural, optical and luminescence properties of Er(sup)3+ doped TiO(sub)2 nanoparticles for use in solar cells and bio imaging devices. DA - 2018-12 DB - ResearchSpace DP - CSIR KW - Sol-gel KW - Down-conversion luminescence KW - Nanoparticles KW - TiO2:Er3+ KW - Up-conversion luminescence LK - https://researchspace.csir.co.za PY - 2018 SM - 0025-5408 SM - 1873-4227 T1 - Sol-gel preparation and characterization of Er3+ doped TiO2 luminescent nanoparticles TI - Sol-gel preparation and characterization of Er3+ doped TiO2 luminescent nanoparticles UR - http://hdl.handle.net/10204/10557 ER -