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Accession Number:
ADA563572
Title:
Polymeric and Molecular Materials for Advanced Organic Electronics
Descriptive Note:
Final rept. 15 Jun 2008-30 Nov 2012
Corporate Author:
NORTHWESTERN UNIV EVANSTON IL DEPT OF CHEMISTRY
Report Date:
2011-07-25
Pagination or Media Count:
21.0
Abstract:
During the project period, we made strong progress in I organic semiconductors, 2 gate dielectrics, and 3 fundamental studies of charge transport. In 1, we expanded our understanding of the architectural and electronic structure requirements for n-type semiconductors and the role grain boundaries play in transport. To accomplish this, we developed new synthetic routes to processable small molecules and polymers, and characterizedoptimized structural, electronic, and processing properties. In 2, we expanded the SAND self-assembled nanodielectric concept to vapor-deposited V-SAND and to spin-coated. printable variants. All have excellent dielectric and insulating properties, a remarkable ability to minimize trapped charge between thin film transistor dielectric and semiconductor layers, and because of the high capacitances, lowe red transistor operating voltages. These characteristics enable many new types of devices with outstanding performance, such as transparent and flexible transistors. In 3, we showed via variable-temperature studies that transport mechanisms involve multiple trapping and release mechanisms which are sensitive to the semiconductor film processing and the gate dielectric.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
