Improved Sensitization of Zinc Oxide Nanorods by Cadmium Telluride Quantum Dots through Charge Induced Hydrophilic Surface Generation

Figure 7

Normalized photoluminescence (PL) measurements on CdTe QD decorated ZnO NR substrates showing lower luminescence (improved charge transfer from QD to ZnO) in UV treated ZnO substrates as compared to air-annealed ZnO substrates. The excitation was carried out at 450 nm, where ZnO is inactive to avoid interference by ZnO emission peaks.