Effect of film morphology on charge transport in C-60 based Organic Field Effect Transistors

Ullah, Mujeeb, Kadashchuk, Andre K., Stadler, Philipp, Kharchenko, Alexander, Pivrikas, Almantas, Simbrunner, Clemens, Sariciftci, Niyazi Serdar and Sitter, Helmut (2010). Effect of film morphology on charge transport in C-60 based Organic Field Effect Transistors. In: MRS Spring Meeting - Symposia GG/HH/II – Organic Photovoltaics and Related Electronics - From Excitons to Devices. MRS Spring Meeting, San Francisco, United States, (137-144). 5-9 April 2010. doi:10.1557/PROC-1270-II06-68


Author Ullah, Mujeeb
Kadashchuk, Andre K.
Stadler, Philipp
Kharchenko, Alexander
Pivrikas, Almantas
Simbrunner, Clemens
Sariciftci, Niyazi Serdar
Sitter, Helmut
Title of paper Effect of film morphology on charge transport in C-60 based Organic Field Effect Transistors
Conference name MRS Spring Meeting
Conference location San Francisco, United States
Conference dates 5-9 April 2010
Proceedings title MRS Spring Meeting - Symposia GG/HH/II – Organic Photovoltaics and Related Electronics - From Excitons to Devices   Check publisher's open access policy
Journal name Materials Research Society Symposium Proceedings   Check publisher's open access policy
Place of Publication Warrendale, PA, United State
Publisher Materials Research Society
Publication Year 2010
Sub-type Fully published paper
DOI 10.1557/PROC-1270-II06-68
ISBN 9781605112473
ISSN 0272-9172
1946-4274
Volume 1270
Start page 137
End page 144
Total pages 8
Language eng
Formatted Abstract/Summary
The critical factor that limits the efficiencies of organic electronic devices is the low charge carrier mobility which is attributed to disorder in organic films. In this work we study the effects of active film morphology on the charge transport in Organic Field Effect Transistors (OFETs). We fabricated the OFETs using different substrate temperature to grow different morphologies of C60 films by Hot Wall Epitaxy. Atomic Force Microscopy images and XRD results showed increasing grain size with increasing substrate temperature. An increase in field effect mobility was observed for different OFETs with increasing grain size in C60 films. The temperature dependence of charge carrier mobility in these devices followed the empirical relation named as Meyer-Neldel Rule and showed different activation energies for films with different degree of disorder. A shift in characteristic Meyer-Neldel energy was observed with changing C60 morphology which can be considered as an energetic disorder parameter.
Keyword Active-Matrix Displays
Meyer-Neldel Rule
Conjugated Polymers
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Mathematics and Physics
 
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