Photosensing Properties of Pentacene OFETs Based on a Novel PMMA Copolymer Gate Dielectric


Loffredo F., Grimaldi I. A. , Miscioscia R., Nenna G., Villani F., Minarini C., et al.

JOURNAL OF DISPLAY TECHNOLOGY, cilt.11, ss.533-540, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 11 Konu: 6
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1109/jdt.2014.2363685
  • Dergi Adı: JOURNAL OF DISPLAY TECHNOLOGY
  • Sayfa Sayısı: ss.533-540

Özet

In the present work, bottom-gate top-contact organic field effect transistors (OFETs) were fabricated by evaporating a pentacene semiconductor film on top of a new insulating poly(methyl methacrylate) (PMMA) copolymer containing methacrylate units. The PMMA copolymer was synthesized in order to combine the well-known insulating properties of PMMA with the possibility to be efficiently photocured enabling photopatterning-based organic circuitry integration processes. The properties of the pentacene layer deposited on ITO/PMMA copolymer stack were studied through morphological and structural analyses. Device photoresponses and photoexcitated transients were investigated and compared to reference devices based on standard PMMA gate dielectric.

In the present work, bottom-gate top-contact organic field effect transistors (OFETs) were fabricated by evaporating a pentacene semiconductor film on top of a new insulating poly(methyl methacrylate) (PMMA) copolymer containing methacrylate units. The PMMA copolymer was synthesized in order to combine the well-known insulating properties of PMMA with the possibility to be efficiently photocured enabling photopatterning-based organic circuitry integration processes. The properties of the pentacene layer deposited on ITO/PMMA copolymer stack were studied through morphological and structural analyses. Device photoresponses and photoexcitated transients were investigated and compared to reference devices based on standard PMMA gate dielectric.