Fabrication of carbon nanotube hybrid films as transparent electrodes for small-molecule photovoltaic cells. Issue 30 (7th March 2016)

• Record Type: Journal Article
• Authors: Zhou, Ying; Wang, Zhiping; Saito, Takeshi; Miyadera, Tetsuhiko; Chikamatsu, Masayuki; Shimada, Satoru; Azumi, Reiko
• Is Part Of: RSC advances. Volume 6:Issue 30(2016)
• Page Start: 25062
• Page End: 25069
• Publication Date: 2016-03-07
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra01674j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A methodology for fabricating small-molecule photovoltaic cells on carbon nanotube transparent electrodes is demonstrated. Abstract : We demonstrate stable carbon nanotube (CNT) hybrid films as transparent electrodes for small-molecule photovoltaic cells. A photonic curing process is utilized to enhance the doping, and construct CNT hybrid films with solution-processed CuI and evaporated MoO3, respectively. These novel CNT–CuI and CNT–MoO3 hybrid films exhibit stable sheet resistances of 70 and 110 Ω per square at around 80% transmittance, respectively. OPV cells are fabricated by evaporating a tetraphenyldibenzoperiflanthene and fullerene bilayer heterojunction on a series of CNT hybrid films. The corresponding optimization of OPV cells are carried out on CNT–CuI and CNT–MoO3 hybrid films. The correlations between the cell performance and the surface morphology, sheet resistance and transmittance of these CNT hybrid films are discussed in detail. The optimum cell on the CNT–CuI film with a nanostructured cascade-type architecture exhibits a power conversion efficiency of 2.97%.