Title :
Effect of pentacene thickness on organic thin film transistors: Role of pentacene/insulator interface
Author :
Gupta, Dipti ; Katiyar, M. ; Deepak
Author_Institution :
Indian Inst. of Technol., Kanpur
Abstract :
A top contact organic (pentacene) thin film transistor (OTFT) is exhibiting a variation in extracted field effect mobility as thickness of pentacene changes from 10 to 35 nm. Device simulation of an ideal OTFT does not exhibit any dependence on semiconductor thickness, as expected. In simulations, we systematically introduced effects based on low-mobility-layer adjacent to the dielectric, and energy level shift in the same layer as compared to the bulk pentacene, which then explains the experimental observations.
Keywords :
organic semiconductors; semiconductor process modelling; semiconductor thin films; thin film transistors; device simulation; dielectric/semiconductor interface; organic thin film transistor; pentacene thickness; pentacene/insulator interface; semiconductor thickness; Dielectric devices; Dielectric substrates; Dielectric thin films; Dielectrics and electrical insulation; Displays; Electrodes; Inorganic materials; Organic thin film transistors; Pentacene; Thin film transistors; Device Simulation; Dielectric/semiconductor interface; Organic thin film transistor; Pentacene; Pentacene thickness;
Conference_Titel :
Physics of Semiconductor Devices, 2007. IWPSD 2007. International Workshop on
Conference_Location :
Mumbai
Print_ISBN :
978-1-4244-1728-5
Electronic_ISBN :
978-1-4244-1728-5
DOI :
10.1109/IWPSD.2007.4472587
