采用空穴阻挡层提高有机太阳电池效率的研究

Adsorption Influencing Factors and Isotherms of Squid Melanin on Pb^2＋ and Cr^6＋

为研究BCP对有机太阳电池的影响,制备了含BCP层的体相异质结电池,器件结构为：ITO/PEDOT：PSS/P3HT＋PCBM/BCP/LiF/Al。结果表明：BCP层起到了空穴阻挡和电子传输的作用,器件性能随着BCP层厚度的不同而变化,当BCP厚度为6nm时,其性能最好。

In this study, squid melanin was used as adsorbent to remove of Pb^2＋ and Cr^6＋ from aqueous solutions, the adsorption factors including squid melanin content, adsorption time, adsorption temperature and solution pH were investigated, as well as the adsorption isotherms were analyzed. Results showed that the added squid melanin effectively adsorbed Pb^2＋ and Cr^6＋ in aqueous solutions. The removal rates of Pb^2＋ and Cr^6＋ were above 85.00% after adsorption of 15 min by squid melain. In addition, the removal rate of Pb^2＋ decreased with the increased adsorption temperatures, whereas, the maximum adsorption of Cr^6＋ was found at 35℃. The low adsorption capacity of squid melanin on Pb^2＋ was observed at solution pH of 5.0, and the effective solution pH for Cr^6＋ removal was in the range of 4.0 to 6.0. Furthermore, results of adsorption isotherms revealed that the adsorption characteristic of squid melanin on Cr^6＋ fitted well to Langmuir and Freundlich models. By comparison, the adsorption behavior of squid melanin on Pb^2＋ only had a good correlation with the Langmuir isotherm.