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Issue
Korean Journal of Chemical Engineering,
Vol.34, No.2, 495-499, 2017
Polyol-mediated synthesis of ZnO nanoparticle-assembled hollow spheres/nanorods and their photoanode performances
Kim SW, Nguyen TK, Thuan DV, Dang DK, Hur SH, Kim EJ, Hahn SH
ZnO nanoparticle-assembled hollow spheres (raspberry-like) and elliptical nanorods (rice-like) were synthesized via a facile polyol process. Employing ethylene glycol as a polyol led to a ZnO nanoparticle-assembled hollow sphere structure, while diethylene glycol resulted in an elliptical nanorod structure. The ZnO hollow spheres had a higher Brunauer-Emmett-Teller (BET) surface area, better dye adsorption, more incident light trapping, and lower defect density than the ZnO elliptical nanorods. The ZnO hollow sphere-based dye-sensitized solar cells (DSSCs) exhibited a three-times higher current density than the ZnO elliptical nanorod-based DSSCs.
Keywords: ZnO Hollow Spheres; ZnO Elliptical Nanorods; Polyol Process; Dye-sensitized Solar Cells
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