Effects of pre-annealing conditions on the characteristics of ZnO nanorods and ZnO/p-Si heterojunction diodes grown through hydrothermal method

► Seed layer annealing at various temperatures and atmospheres ► Effect of pre-annealing on ZnO nanorods (NRs) ► Effect of pre-annealing on ZnO NRs/p-Si heterojunction diodes ► Pre-annealing temperature affects the property of ZnO NRs ► Pre-annealing in O2 results in filling oxygen-vacancy-related defects