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Organic FET devices based upon latent pigments of unsubstituted diketopyrrolopyrrole or quinacridone

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Organic FETs based upon unsubstituted diketopyrrolopyrrole (DPP) or quinacridone (QA) have been fabricated, using their solvent-soluble precursors called latent pigments (t-BOC DPP and t-BOC QA) that can be also regenerated into their parent pigments by heating around 200 °C. Use of latent pigments enables us to fabricate FET devices by means of spin coating, offering a low-cost fabrication process rather than an expensive vacuum technology. The objective of the present investigation is to evaluate the performance of DPP- and QA-based FETs prepared by latent pigments. As a result, the field effect mobilities of about 7.19×10−6 and 8.23×10−6 cm2/Vs have been obtained for FET devices based upon t-BOC DPP and QA, respectively. These values are almost equivalent to those of the FETs prepared by vacuum deposition of DPP and QA: 1.43×10−5 and 1.08×10−5 cm2/Vs, respectively. The present result leads us to conclude that the latent pigment technology is a promising low-cost process to fabricate organic FETs.

Document Type: Research Article

Publication date: January 1, 2007

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  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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