Chen, HM, Chen CK, Lin CC, Liu RS, Yang H, Chang WS, Chen KH, Chan TS, Lee JF, Tsai DP.? 2011.??Multi-bandgap-sensitized ZnO nanorod photoelectrode arrays for water splitting: an X-ray absorption spectroscopy approach for the electronic evolution under solar illumination. J. Phys. Chem. C. 115:21971-21980.