Synthesis and spectroscopic characterization of solution processable highly ordered polythiophene–carbon nanotube nanohybrid structures
作者： T Schuettfort , H J Snaith , A Nish , R J Nicholas
DOI: 10.1088/0957-4484/21/2/025201
关键词: Band gap 、 Charge carrier 、 Photoluminescence excitation 、 Polythiophene 、 Organic solar cell 、 Electron mobility 、 Carbon nanotube 、 Nanotechnology 、 Materials science 、 Crystallinity
摘要: We report on the synthesis and spectroscopic study of a novel highly ordered nanohybrid structure consisting single-walled carbon nanotube (SWNT) coated with crystalline regio-regular poly(3-hexylthiophene) (rrP3HT) discuss applicability nanohybrids in organic photovoltaics. The use solvent extraction technique allows to be produced high yield purity. find evidence that crystallinity rrP3HT is enhanced presence SWNTs, which introduces reduced optical band gap increased carrier mobility polymer. Study photoluminescence excitation spectra SWNTs reveals an efficient energy transfer excitons created SWNTs. This expected limit our ability as charge separating interface can therefore explain low efficiency P3HT-SWNT solar cells date. In addition, careful consideration necessary when attempting improve state art polymer-fullerene photovoltaic devices order make their mobilities crystallinity.
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