【摘要】 本文研究了由硬脂酸香豆素制得的LB膜对n-Si/Ni电极性能的修饰作用.该LB膜沉积方式是Z型的,成膜之后光吸收蓝移（由343nm移至325nm）.在60 mW·cm^-2溴钨灯光照下,n-Si/Ni/3LB/Fe（CN）₆^3-14-/Pt电池的光电转换效率增大了一倍,稳定性亦有明显改善.交流阻抗测量表明,光照使n-Si/Ni/3LB电极的电解电阻大大减小,实验结果表明,硬脂酸香豆素LB膜对n-Si/Ni电极上的光致电荷传递过程的修饰作用是良好的.更多还原

【Abstract】 The modification of stearic acid-coumarin LB films on the performance of n-Si/Ni electrode has been studied in this paper The deposition of the LB film was Z-type. There was a blue shift of absorption peak （from 348 nm to 325 nm） after the film had been prepared on a glass plate. Under the illumination of 60mW·cm^-2bromine tungstem lamp light, the energy conversion efficiency of n-Si/Ni/3LB/Fe（CN）₆^3-/4-/ Pt cell has been increased by 100％ and the stability has been apparently enhanced. The AC impedance measurement has shown that the charge transfer resistance of n -Si/Ni/3LB electrode decreased greatly under the irradiation. The research results indicates that the modification of stearic acid-coumarin LB films on the photoelectron transfer process on n-Si/Ni electrode is good.更多还原