| 초록 |
Photocatalysis enables solar energy conversion as a form of chemical bonding, which means we can store, transport and utilize solar light. To achieve solar-to-fuel conversion efficiency for industrial application, photocatalysts should simultaneously satisfy several properties, such as wide range of light absorption, outstanding charge carrier generation and transport efficiency, and high catalytic reaction rate and product selectivity. Quantum-confined semiconductor nanocrystals has attracted great attentions in that respect, as they have tunability of absorption coefficients of wide range of energies, high carrier mobility and stability. In this work, we systematically control CdSe core position in the CdS nanorod with adjusting growth rate in axial direction in CdSe/CdS dot-in-rod heterostructure. CdSe/CdS dot-in-rod core position dependent photocatalytic activity and design efficient structure of CdSe/CdS dot-in-rod structure for photocatalytic hydrogen evolution. By using different facet reactivity of wurtzite structure, we can control growth kinetics of CdSe/CdS dot-in-rod in each nanorod axial direction. |
