摘要
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.
The photon - current conversion properties of nanostructured TiO2/Q - CdS film electrode were studied by using the plm- tocurrent action spectra and the photocurrent dependence of potential. Because of quantum size effect, the bandgap of Q - CdS parti- cles 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.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2007年第2期199-202,共4页
Chemical Research and Application
基金
国家自然科学基金资助项目(2057303120203008)
河北省自然科学基金资助项目(202351)
河北省教育厅指导性资助项目(Z2005203)
