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Effects of Pd and Ni Metals Electrolessly Deposited on Si Nanowires on Properties of Photoelectrochemical Solar Cell
Abstract:
A photoelectrochemical solar cell with a structure of modified Si nanowire anocle/K4Fe(CN)6+ K3Fe(CN)6/Pt cathode was prepared and studied. The Si nanowires were first formed by immersing n-Si chip in an etching solution of HF + AgNO3 and Pd and Ni metals were electrolessly deposited on the surface of Si nanowires. The modified anode was characterized by a scanning electron microscope for the surface and cross section view, and by an X-ray diffractometer for the phase and structure. The properties of the photoelectrochemical solar cell were measured under standard AM 1.5 simulated sunlight (100mW/cm2). The results showed that the total photoelectron conversion efficiency of the photoelectrochemical solar cell can be slightly increased when the Si nanowire anode was deposited with Pd metal, and can be greatly increased when deposited with Ni metal.
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686-689
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December 2011
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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