Center of Materials Technology and Photonics & Electrical Engineering Department, Technological Educational Institute (TEI) of Crete, Heraklion 71004 Crete, Greece.
ACS Appl Mater Interfaces. 2012 Sep 26;4(9):4864-70. doi: 10.1021/am301204g. Epub 2012 Aug 24.
A solution-processed graphene content was synthesized by treatment of graphite oxide (GO) with phenyl isothiocyanate (PITC) by taking advantage of the functional carboxyl groups of graphene oxide. The GO was prepared by the oxidation of natural graphite powder and was expanded by ultrasonication in order to exfoliate single or/and few-layered graphene oxide sheets. The functionalized graphene oxide, GO-PITC, can be dispersed within poly-(3-hexylthiophene) (P3HT) and can be utilized as the electron acceptor in bulk heterojunction polymer photovoltaic cells. When P3HT is doped with GO-PITC, a great quenching of the photoluminescence of the P3HT occurred, indicating a strong electron transfer from the P3HT to the GO-PITC. The utilization of GO-PITC as the electron acceptor material in poly-(3-hexylthiophene) (P3HT) bulk heterojunction photovoltaic devices was demonstrated, yielding in a power conversion efficiency enhancement of 2 orders of magnitude compared with that of pristine P3HT.
通过利用氧化石墨烯（GO）的功能羧基基团，用苯异硫氰酸酯（PITC）处理氧化石墨（GO）合成了一种溶液处理的石墨烯含量。GO 通过天然石墨粉末的氧化和超声处理来制备，以剥离单或/和少层氧化石墨烯片。功能化的氧化石墨烯 GO-PITC 可以分散在聚（3-己基噻吩）（P3HT）中，并可用作体异质结聚合物光伏电池中的电子受体。当 P3HT 掺杂 GO-PITC 时，P3HT 的光致发光发生了很大的猝灭，表明从 P3HT 到 GO-PITC 的电子转移很强。GO-PITC 被用作聚（3-己基噻吩）（P3HT）体异质结光伏器件中的电子受体材料，与原始 P3HT 相比，功率转换效率提高了 2 个数量级。
