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本文利用L-B技术,在p-Si(111)基底上铺展了单层厚度只有6的CuTSPc超薄分子膜(简称超分子膜)和具有C_(18)脂链间隙的CuTSPc L-B膜两种膜系,首次观察到了CuTSPc分子膜在这种特定界面中的表面光电压谱。并且发现,当CuTSPc仅为一个单分子层时,这两种膜系的表面光伏效应最强。我们的研究结果表明,只有紧邻半导体基底的一个单分子层厚度的染料分子对光致界面电荷转移起关键作用。最后在实验上证实这种电荷转移是电荷直接注入机制,而非间接注入机制。
In this paper, LB films were deposited on p-Si (111) substrate with CuTSPc ultrathin monolayer (thickness: 6) and CuTSPc LB film with C_ (18) , For the first time observed in the CuTSPc molecular film surface photovoltaics in this particular interface. And found that when CuTSPc is only a single molecular layer, the two films of the strongest surface photovoltaic effect. Our results show that only a monomolecular layer of dye molecules next to a semiconductor substrate plays a key role in the photointerruptive charge transfer. Finally, it is experimentally confirmed that this charge transfer is a charge direct injection mechanism rather than an indirect injection mechanism.