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; Hayden, Oliver and So, Franky and Blom, Paul and Richter, Henning and Park, Jongwook, eds. (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, USA.

[thumbnail of Gupta-etal-MRSSM-2012-Optimizing-pentacene-growth-in-low-voltage-organic-thin-film]
Preview
 PDF (Gupta-etal-MRSSM-2012-Optimizing-pentacene-growth-in-low-voltage-organic-thin-film)
Gupta_etal_MRSSM_2012_Optimizing_pentacene_growth_in_low_voltage_organic_thin_film.pdf
Accepted Author Manuscript
Download (323kB)| Preview

    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.

    ORCID iDs

    Gupta, Swati, Chinnam, Krishna Chytanya, Zelzer, Mischa, Ulijn, Rein ORCID logoORCID: https://orcid.org/0000-0001-7974-3779 and Gleskova, Helena ORCID logoORCID: https://orcid.org/0000-0001-7195-9639; Hayden, Oliver, So, Franky, Blom, Paul, Richter, Henning and Park, Jongwook
    CORE (COnnecting REpositories)