Abstract
Graphene-coated Al2O3 (GCA)-TiO2 nanocomposite photoanodes were fabricated by dispersing the GCA (1, 3, and 5 wt.%) and TiO2 nanoparticles. Photoelectrochemical (PEC) responses under the white light illumination were significantly enhanced with the increase of the GCA content and all of the GCA-TiO2 films exhibited much better PEC responses than the electrode prepared from the TiO2 alone. The significantly improved PEC response of the GCA-TiO2 can be attributed to the enhanced electron transport.
Acknowledgment
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (grant number 2010–0003968), and the Human Resources Development Program (R&D Workforce Cultivation Track for Solar Cell Materials and Processes) of Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean Ministry of Knowledge Economy.
Notes
K.-S. Ahn and C.-J. Choi contributed equally to this work as the corresponding authors.