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

Swati Gupta, Krishna Chytanya Chinnam, Mischa Zelzer, Rein Ulijn, Helena Gleskova

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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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.

Original languageEnglish
Title of host publication2012 Materials Research Society Spring Meeting - Symposium J – Organic and Hybrid-Organic Electronics
EditorsOliver Hayden, Franky So, Paul Blom, Henning Richter, Jongwook Park
Number of pages6
Publication statusPublished - Nov 2012
EventMaterials Research Society Spring Meeting 2012 - San Francisco, United States
Duration: 9 Apr 201213 Apr 2012

Publication series

NameMRS Symposium Proceedings
PublisherMaterials Research Society


ConferenceMaterials Research Society Spring Meeting 2012
CountryUnited States
CitySan Francisco


  • organic thin-film transistor
  • dry fabrication
  • pentacene growth

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