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>> The ZnO is able to produce hydrogen from water however it can only absorb ultraviolet region due to its 3.37eV of wide band gap. Therefore efficiency of solar hydrogen production is low. In this work we reportinvestigation results of improved visible light photo-catalytic properties of CdSe quantum dots(QDs) sensitized ZnOnanorod heterostructures. Hydrothermally vertically grown ZnO nanorod arrays on FTO glass were sensitized withCdSe by using SILAR(successive ionic layer adsorption and reaction) method. Morphology of grown ZnO andCdSe sensitized ZnO nanorods had been investigated by FE-SEM that shows length of 2.0μm, diameter of 120~150nm nanorod respectively. Photocatalytic measurements revealed that heterostructured samples show improved photocurrent density under the visible light illumination. Improved visible light performance of the heterostructures is resulting from narrow band gap of the CdSe and its favorable conduction band positions relativeto potentials of ZnO band and water redox reaction.Key words : Hydrothermal method(), Photocatalyst(), ZnO(), Quantum dot(), Hydrogen()

CdSe Sensitized ZnO Nanorods on FTO Glass for Hydrogen Production under Visible Light Irradiation