|About this Abstract
||Materials Science & Technology 2011
||MS&T'11 Poster Session
||069 Zinc Oxide (ZnO) and Bandgap Engineering for Photoelectrochemical Splitting of Water to Produce Hydrogen
||Sudhakar Shet, Yanfa Yan, Heli Wang, Nuggehalli Ravindra, John Turner, Mowafak Al-Jassim
|On-Site Speaker (Planned)
We report material synthesis and characterization, and photoelectrochemical (PEC) measurements to explore methods to effectively reduce the band gap of ZnO for the application of PEC water splitting. We find that the band gap reduction of ZnO can be achieved by N and Cu incorporation into ZnO. We demonstrate that heavy Cu-incorporation lead to both p-type doping and band gap significantly reduced ZnO thin films. The p-type conductivity in our ZnO:Cu films is clearly revealed by Mott-Schottky plots. We further have successfully synthesized ZnO:N thin films with various reduced band gaps by reactive RF magnetron sputtering. The band gap reduction and photoresponse with visible light for N- and Cu-incorporated ZnO thin films are demonstrated.