Development of an organic device for electric charge injection

• Grant number: 11/21302-0
• Support type: Scholarships abroad - Research Internship - Post-doctor
• Effective date (Start): March 01, 2012
• Effective date (End): August 31, 2012
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: José Alberto Giacometti
• Grantee: Élder Mantovani Lopes
• Supervisor abroad: David Martin Taylor
• Home Institution: Faculdade de Ciências e Tecnologia (FCT). Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil
• Local de pesquisa : Bangor University, Wales
• Associated to the scholarship: 09/08984-4 - Thin films of the semiconducting polymer poly(3-hexylthiophene) and its interface with insulators: study via impedance of MIS structure and photoluminescence, BP.PD

Abstract

This project, to be developed at Bangor University (UK) under the supervision of Prof. Dr. David Martin Taylor, aims to produce and evaluate an organic version of a charge injection device (CID) and exploring its potential for acting as a charge coupled device (CCD). A successful outcome will open the way to a new class of organic imaging and signal processing devices. The CID device is also an excellent test structure for fundamental studies on the effects of trapping/detrapping of carriers by traps at the insulator/semiconductor interface, providing essential information to the operation of organic field effect transistors (OFETs). The poly(3-hexiltiofeno), P3HT, will be used as semiconductor and the photoresist SU8 will be used as insulator, although different materials may be used depending on need. Capacitance as a function of voltage (CV) and current displacement measurements will be the main measurements used to study the devices properties. As a result, is expected to improve the efficiency of charge transfer along the insulator/semiconductor interface, providing the first definitive study on the viability of an organic CCD. The investigation of the insulator/semiconductor combinations for such applications will also stimulate the improvement of OFETs, in full synergy with the postdoctoral project currently developed by the beneficiary of this proposal in Brazil. (AU)