Molecular order of air-stable p-type organic thin-film transistors by tuning the extension of the π-conjugated core: the cases of indolo[3, 2-b]carbazole and triindole semiconductors. Issue 3 (28th October 2014)

• Record Type: Journal Article
• Authors: Reig, Marta; Puigdollers, Joaquim; Velasco, Dolores
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 3(2015)
• Page Start: 506
• Page End: 513
• Publication Date: 2014-10-28
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c4tc01692k
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Correlation of the OTFT performance with the molecular order in the semiconductor layers as a function of the extension of the π-conjugated core of a series of carbazole-based organic semiconductors. Abstract : Charge transport in organic devices depends strongly on the molecular order and morphology of the organic semiconductor thin films. In the design of new organic semiconductors, the selection of the appropriate core plays a key role in the molecular packing and charge transport characteristics of the organic device. Four derivatives of carbazole that mainly differ in the extension of the π-conjugated core, including indolo[3, 2- b ]carbazole and triindole derivatives, exhibited hole mobilities ranging from 10 −5 to 10 −2 cm 2 V −1 s −1 as active layers in organic thin-film transistors (OTFTs). X-ray analyses of the single crystals and evaporated thin films gave insights into the molecular packing of the compounds that justified their OTFTs characteristics.