ZnCdO nanowires with up to 45% Cd are demonstrated showing room temperature photoluminescence (PL) down to 2.02 eV and a radiative efficiency similar to that of ZnO nanowires. Analysis of the microstructure in individual nanowires confirms the presence of a single wurtzite phase even at the highest Cd contents, with a homogeneous distribution of Cd both in the longitudinal and transverse directions. Thermal annealing at 550 °C yields an overall improvement of the PL, which is blue-shifted as a result of the homogeneous decrease of Cd throughout the nanowire, but the single wurtzite structure is fully maintained.
Optical properties and microstructure of 2.02-3.30 eV ZnCdO nanowires: Effect of thermal annealing
M. Lopez-Ponce, A. Hierro, J. M. Ulloa, P. Lefebvre, E. Muñoz, S. Agouram, V. Muñoz-Sanjosé, K. Yamamoto, A. Nakamura, J. Temmyo; Optical properties and microstructure of 2.02-3.30 eV ZnCdO nanowires: Effect of thermal annealing. Appl. Phys. Lett. 8 April 2013; 102 (14): 143103. https://doi.org/10.1063/1.4799491
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