Morphological and Optoelectronic Characteristics of Nanocomposites Comprising Graphene Nanosheets and Poly(3-hexylthiophene)

被引:18
作者
Chang, Yo-Wei [1 ]
Yu, Shiau-Wei [2 ]
Liu, Cheng-Hao [1 ]
Tsiang, Raymond Chien-Chao [1 ,2 ]
机构
[1] Natl Chung Cheng Univ, Dept Chem Engn, Chiayi 621, Taiwan
[2] Natl Chung Cheng Univ, Inst Optomechatron, Chiayi 621, Taiwan
关键词
Graphene; Nanocomposite; Poly(3-hexylthiophene); Optoelectronics; EXFOLIATED GRAPHITE OXIDE; REDUCTION; POLYMERS; NANOPLATELETS; DISPERSIONS; DEVICES; SERIES; CHAIN; GAS;
D O I
10.1166/jnn.2010.2555
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
P3HT/graphene nanocomposite was prepared via in-situ reduction of exfoliated graphite oxide in the P3HT polymer matrix, where the exfoliated graphite oxide was formed beforehand via the oxidation of graphite via the Hummers method. The oxidation reaction not only imparts functional groups, such as C=O, C-OH, and C-O-C, to graphite but also causes exfoliation of the resulting graphite oxide. The functional groups render graphite oxide an additional, lower thermal degradation temperature (T-d) and the exfoliation shifts the XRD pattern towards a much smaller angle. The oxidation of graphite into graphite oxide creates a pleated flaking morphology for graphite oxide as opposed to that of graphite. UV/Vis and photoluminescence (PL) spectra of P3HT/graphene nanocomposite indicate that the existence of graphene does not alter the UV/Vis and PL excitation characteristics of P3HT, and the P3HT/graphene composite has higher electron mobility, a smaller band gap and higher conductivity than the pristine P3HT.
引用
收藏
页码:6520 / 6526
页数:7
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