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Title: Light quasiparticles dominate electronic transport in molecularcrystal field-effect transistors

Abstract

We report on an infrared spectroscopy study of mobile holesin the accumulation layer of organic field effect transistors based onrubrene single crystals. Our data indicate that both transport andinfrared properties of these transistors at room temperature are governedby light quasiparticles in molecular orbital bands with the effectivemasses m* comparable to free electron mass. Furthermore, the m* valuesinferred from our experiments are in agreement with those determined fromband structure calculations. These findings reveal no evidence forprominent polaronic effects, which is at variance with the common beliefsof polaron formation in molecular solids.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
COLLABORATION - UCSD
OSTI Identifier:
927388
Report Number(s):
LBNL-63226
Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: 458121; BnR: KC0204016; TRN: US200811%%136
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 99; Related Information: Journal Publication Date: July 6, 2007; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
36; 75; ELECTRONS; FIELD EFFECT TRANSISTORS; MOLECULAR CRYSTALS; MONOCRYSTALS; POLARONS; SPECTROSCOPY; TRANSISTORS; TRANSPORT; Field-Effect Transistors Rubrene Infrared FTIR Synchrotronquasiparticles

Citation Formats

Li, Z Q, Podzorov, V, Sai, N, Martin, M C, Gershenson, M E, Di Ventra, M, and Basov, D N. Light quasiparticles dominate electronic transport in molecularcrystal field-effect transistors. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.99.016403.
Li, Z Q, Podzorov, V, Sai, N, Martin, M C, Gershenson, M E, Di Ventra, M, & Basov, D N. Light quasiparticles dominate electronic transport in molecularcrystal field-effect transistors. United States. https://doi.org/10.1103/PhysRevLett.99.016403
Li, Z Q, Podzorov, V, Sai, N, Martin, M C, Gershenson, M E, Di Ventra, M, and Basov, D N. 2007. "Light quasiparticles dominate electronic transport in molecularcrystal field-effect transistors". United States. https://doi.org/10.1103/PhysRevLett.99.016403.
@article{osti_927388,
title = {Light quasiparticles dominate electronic transport in molecularcrystal field-effect transistors},
author = {Li, Z Q and Podzorov, V and Sai, N and Martin, M C and Gershenson, M E and Di Ventra, M and Basov, D N},
abstractNote = {We report on an infrared spectroscopy study of mobile holesin the accumulation layer of organic field effect transistors based onrubrene single crystals. Our data indicate that both transport andinfrared properties of these transistors at room temperature are governedby light quasiparticles in molecular orbital bands with the effectivemasses m* comparable to free electron mass. Furthermore, the m* valuesinferred from our experiments are in agreement with those determined fromband structure calculations. These findings reveal no evidence forprominent polaronic effects, which is at variance with the common beliefsof polaron formation in molecular solids.},
doi = {10.1103/PhysRevLett.99.016403},
url = {https://www.osti.gov/biblio/927388}, journal = {Physical Review Letters},
issn = {0031-9007},
number = ,
volume = 99,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 2007},
month = {Mon Apr 30 00:00:00 EDT 2007}
}