Various platinum (Pt) colloid solutions were prepared and used for the modification of n-type silicon (n-St) electrodes. All the photoelectrochemical (PEC) solar cells, equipped with the Pt-colloid modified n-St electrodes thus prepared, gave the open-circuit photovoltages (Voo) of 0.550 to 0.630 V, much higher than those (0.25 ~ 0.30 V) for n-St electrodes coated with continuous thin Pt layers, clearly showing the beneficial effect of the discontinuous metal coating. The PEC cells, equipped with the textured-surface n-St electrodes modified with the Pt colloid particles prepared by Bredig's method, yielded an energy conversion efficiency of 14.9% in a three-electrode configuration. The relation between the Voc and the size and distribution of the Pt particles is discussed.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 130.160.4.77 Downloaded on 2015-03-30 to IP
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