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Optimizing pentacene growth in low-voltage organic thin-film transistors prepared by dry fabrication techniques

Gupta, Swati and Chinnam, Krishna Chytanya and Zelzer, Mischa and Ulijn, Rein and Gleskova, Helena (2012) Optimizing pentacene growth in low-voltage organic thin-film transistors prepared by dry fabrication techniques. In: 2012 Materials Research Society Spring Meeting - Symposium J – Organic and Hybrid-Organic Electronics. MRS Symposium Proceedings, 1435 . Materials Research Society.

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Abstract

We have studied the effect of pentacene purity and evaporation rate on low-voltage organic thin-film transistors (OTFTs) prepared solely by dry fabrication techniques. The maximum field-effect mobility of 0.07 cm2/Vs was achieved for the highest pentacene evaporation rate of 0.32 Å/s and four-time purified pentacene. Four-time purified pentacene also led to the lowest threshold voltage of -1.1 V and inverse subthreshold slope of ~100 mV/decade. In addition, pentacene surface was imaged using atomic force microscopy, and the transistor channel and contact resistances for various pentacene evaporation rates were extracted and compared to field-effect mobilities.

Item type: Book Section
ID code: 40091
Keywords: organic thin-film transistor , dry fabrication , pentacene growth, Electrical engineering. Electronics Nuclear engineering, Physical and theoretical chemistry
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Science > Chemistry > Physical and theoretical chemistry
Department: Faculty of Engineering > Electronic and Electrical Engineering
Faculty of Science > Pure and Applied Chemistry
Technology and Innovation Centre > Bionanotechnology
Depositing user: Pure Administrator
Date deposited: 20 Jun 2012 13:48
Last modified: 05 Jan 2019 18:15
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URI: https://strathprints.strath.ac.uk/id/eprint/40091
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