title: Stable core/shell CdTe/Mn-CdS quantum dots sensitized three-dimensional, macroporous ZnO nanosheet photoelectrode and their photoelectrochemical properties.
abstract: A novel photoelectrode based on ZnS/CdTe/Mn-CdS/ZnS-sensitized three-dimensional macroporous ZnO nanosheet (NS) has been prepared by electrodeposition and successive ion layer adsorption and reaction (SILAR) method. The photoelectrode performances were significantly improved through the coupling of the core/shell CdTe/Mn-CdS quantum dots (QDs) with ZnO NS, and the introduction of the ZnS layer as a potential barrier. The photocurrent density systematically increases from ZnO NS (0.45 mA/cm(2)), CdTe/Mn-CdS/ZnO NS (4.98 mA/cm(2)), to ZnS/CdTe/Mn-CdS/ZnS/ZnO (6.23 mA/cm(2)) under the irradiation of AM 1.5G simulated sunlight. More important, the ZnS/CdTe/Mn-CdS/ZnS-sensitized ZnO NS photoelectrode provides a remarkable photoelectrochemical cell efficiency of 4.20% at -0.39 V vs Ag/AgCl.
authors.affiliation: State Key Lab of Chemo/Biosensing & Chemometrics, College of Chemistry & Chemical Engineering, Hunan University , Changsha 410082, China.
authors.forename: Weili
authors.initials: W
authors.lastname: Li
authors.forename: Pengtao
authors.initials: P
authors.lastname: Sheng
authors.forename: Hongyan
authors.initials: H
authors.lastname: Feng
authors.forename: Xuehua
authors.initials: X
authors.lastname: Yin
authors.forename: Xuewei
authors.initials: X
authors.lastname: Zhu
authors.forename: Xu
authors.initials: X
authors.lastname: Yang
authors.forename: Qingyun
authors.initials: Q
authors.lastname: Cai