skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

We report on an infrared spectroscopy study of mobile holes in the accumulation layer of organic field-effect transistors based on rubrene single crystals. Our data indicate that both transport and infrared properties of these transistors at room temperature are governed by light quasiparticles in molecular orbital bands with the effective masses m[small star, filled]comparable to free electron mass. Furthermore, the m[small star, filled]values inferred from our experiments are in agreement with those determined from band structure calculations. These findings reveal no evidence for prominent polaronic effects, which is at variance with the common beliefs of polaron formation in molecular solids.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Advanced Light Source Division
OSTI Identifier:
937495
Report Number(s):
LBNL-979E
Journal ID: 0031-9007
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 99; Related Information: Journal Publication Date: July 6, 2007
Country of Publication:
United States
Language:
English
Subject:
75; 36; Rubrene, Infread, FET, organic, effective mass

Citation Formats

Li, Z. Q., Podzorov, V., Sai, N., Martin, Michael C., Gershenson, M. E., Di Ventra, M., and Basov, D. N. Light quasiparticles dominate electronic transport in molecular crystal field-effect transistors. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.99.016403.
Li, Z. Q., Podzorov, V., Sai, N., Martin, Michael C., Gershenson, M. E., Di Ventra, M., & Basov, D. N. Light quasiparticles dominate electronic transport in molecular crystal field-effect transistors. United States. doi:10.1103/PhysRevLett.99.016403.
Li, Z. Q., Podzorov, V., Sai, N., Martin, Michael C., Gershenson, M. E., Di Ventra, M., and Basov, D. N. Thu . "Light quasiparticles dominate electronic transport in molecular crystal field-effect transistors". United States. doi:10.1103/PhysRevLett.99.016403. https://www.osti.gov/servlets/purl/937495.
@article{osti_937495,
title = {Light quasiparticles dominate electronic transport in molecular crystal field-effect transistors},
author = {Li, Z. Q. and Podzorov, V. and Sai, N. and Martin, Michael C. and Gershenson, M. E. and Di Ventra, M. and Basov, D. N.},
abstractNote = {We report on an infrared spectroscopy study of mobile holes in the accumulation layer of organic field-effect transistors based on rubrene single crystals. Our data indicate that both transport and infrared properties of these transistors at room temperature are governed by light quasiparticles in molecular orbital bands with the effective masses m[small star, filled]comparable to free electron mass. Furthermore, the m[small star, filled]values inferred from our experiments are in agreement with those determined from band structure calculations. These findings reveal no evidence for prominent polaronic effects, which is at variance with the common beliefs of polaron formation in molecular solids.},
doi = {10.1103/PhysRevLett.99.016403},
journal = {Physical Review Letters},
number = ,
volume = 99,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}