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n-CdTe单晶表面用H_2PtCl_6或RuCl_3溶液浸渍,显著提高了电池的效率及稳定性.除选择金属离子种类外,电极预处理及浸渍时间对修饰作用也有很大影响.固体表面分析表明,在PtCl_6~(2-)溶液中短时间浸渍的电极表面上有大量铂岛,能减少表面缺陷并催化界面反应.在RuCl_3溶液中浸渍,将可使Ru~(3+)离子吸附于电极表面,有利于光电化学反应.PdCl_2溶液浸渍或长时间PtCl_6~(2-)溶液处理均得到不利的结果.
The surface of n-CdTe single crystal was impregnated with H_2PtCl_6 or RuCl_3 solution, which significantly improved the efficiency and stability of the battery.In addition to the choice of metal ion species, the electrode pretreatment and immersion time greatly affected the modification.The solid surface analysis showed that in the presence of The surface of PtCl_6 ~ (2-) solution immersed in a short time has a large number of platinum islands, which can reduce the surface defects and catalyze the interfacial reaction.In RuCl_3 solution, Ru_ (3+) ions can be adsorbed on the electrode surface, Is conducive to the photoelectrochemical reaction.PdCl_2 solution immersion or prolonged PtCl_6 ~ (2) solution treatment were unfavorable results.