The photon-current conversion properties of nanostructured TiO2/Q-CdS film electrode were studied by using the photocurrent action spectra and the photocurrent dependence of potential.Because of quantum size effect,th...The photon-current conversion properties of nanostructured TiO2/Q-CdS film electrode were studied by using the photocurrent action spectra and the photocurrent dependence of potential.Because of quantum size effect,the bandgap of Q-CdS particles was widened to 2.51eV which were prepared when they were immersed in Cd(NO3)2 and Na2S solution respectively for 60s and then dried at 80℃.The diagram of energy level of Q-CdS film was determined with the photocurrent-potential curves and photoelectrochemical method.The valence band of Q-CdS film was-6.168eV(vs Vaccum).The nanostructured TiO2/Q-CdS film electrode could enlarge absorption region and obviously increase the photocurrent.The photon-electron conversion efficiency could be improved.展开更多
文摘The photon-current conversion properties of nanostructured TiO2/Q-CdS film electrode were studied by using the photocurrent action spectra and the photocurrent dependence of potential.Because of quantum size effect,the bandgap of Q-CdS particles was widened to 2.51eV which were prepared when they were immersed in Cd(NO3)2 and Na2S solution respectively for 60s and then dried at 80℃.The diagram of energy level of Q-CdS film was determined with the photocurrent-potential curves and photoelectrochemical method.The valence band of Q-CdS film was-6.168eV(vs Vaccum).The nanostructured TiO2/Q-CdS film electrode could enlarge absorption region and obviously increase the photocurrent.The photon-electron conversion efficiency could be improved.
