In this work, the sol–gel method was used to prepare Ytterbium (Yb(sup3+)) doped ZnO nano-phosphors with different concentrations of Yb(sup3+) ions. Their structural, morphological, photoluminescence, electronic states and the chemical composition analysis were investigated in detail. Both pure and Yb(sup3+) doped ZnO were found to have hexagonal wurtzite structure with the particle size in the range of 4–7 nm in diameter. Addition of Yb(sup3+) ions into the ZnO host lattice led to enhanced exciton emission from ZnO indicating energy transfer from Yb(sup3+) ions to ZnO or a reduction of oxygen related defects.
Reference:
Kabongo, G.L, Mhlongo, G.H, Mothudi, B.M, Hillie, K.T, Swart, H.C and Dhlamini, M.S. 2014. Enhanced exciton emission from ZnO nano-phosphor induced by Yb3+ ions. Materials Letters, vol. 119, pp 71-74
Kabongo, G., Mhlongo, G. H., Mothudi, B., Hillie, K., Swart, H., & Dhlamini, M. (2014). Enhanced exciton emission from ZnO nano-phosphor induced by Yb3+ ions. http://hdl.handle.net/10204/7798
Kabongo, GL, Gugu H Mhlongo, BM Mothudi, KT Hillie, HC Swart, and MS Dhlamini "Enhanced exciton emission from ZnO nano-phosphor induced by Yb3+ ions." (2014) http://hdl.handle.net/10204/7798
Kabongo G, Mhlongo GH, Mothudi B, Hillie K, Swart H, Dhlamini M. Enhanced exciton emission from ZnO nano-phosphor induced by Yb3+ ions. 2014; http://hdl.handle.net/10204/7798.
