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利用Cd(CH3COO)2·2H2O与Na2S·9H2O,以双齿络合剂乙二胺辅助水溶液通过溶剂热法合成了高产率的CdS纳米棒.X射线衍射(XRD)和透射电子显微镜(TEM)结果表明,产物为六方纤锌矿相的三齿状CdS纳米棒,直径约为10~15nm,臂长为100nm左右;利用旋转涂膜在氧化铟锡(ITO)导电玻璃基底制备了不同含量CdS与聚乙烯基咔唑(PVK)复合结构薄膜,荧光光谱结果显示出复合薄膜荧光强度随CdS组分的增加而逐渐降低,而表面光电压谱图则表明相应的光电压信号逐渐增强,这种现象主要是由于CdS与PVK之间存在匹配的能级,促使两者发生了电荷转移,使电子-空穴对产生了有效分离而提高载流子产生效率,同时我们对两者之间发生的电荷转移过程进行了分析.
CdS nanorods were prepared by solvothermal method using Cd (CH 3 CO 2) 2 · 2H 2 O and Na 2 S · 9H 2 O as solvates in the presence of bidentate complexing agent ethylenediamine as auxiliary solution.XRD and TEM were used to synthesize CdS nanorods, The results show that the product is a hexagonal wurtzite tridentate CdS nanorods with a diameter of about 10 ~ 15nm and an arm length of about 100nm. CdS films with different contents of CdS were prepared on indium tin oxide (ITO) conductive glass substrate by spin coating And polyvinylcarbazole (PVK) composite films, the fluorescence spectra showed that the fluorescence intensity of the composite films decreased with the increase of CdS content, while the surface photovoltage spectra showed that the corresponding photo voltage signal gradually increased. This phenomenon Mainly due to the existence of a matching energy level between CdS and PVK, prompting the occurrence of charge transfer between the two, so that the electron-hole pair can effectively separate and improve the efficiency of carrier generation. At the same time, the charge generated between the two The transfer process was analyzed.