Ultrafast conductivity dynamics in pentacene probed using terahertz spectroscopy

被引：46

作者：

Thorsmolle, VK ^{[1
]}

Averitt, RD ^{[1
]}

Chi, X ^{[1
]}

Hilton, DJ ^{[1
]}

Smith, DL ^{[1
]}

Ramirez, AP ^{[1
]}

Taylor, AJ ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 06期

关键词：

D O I：

10.1063/1.1644046

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present measurements of the transient photoconductivity in pentacene single crystals using optical-pump terahertz-probe spectroscopy. We have measured the temperature and fluence dependence of the mobility of the photoexcited charge carriers with picosecond resolution. The pentacene crystals were excited at 3.0 eV, which is above the bandgap of similar to2.2 eV, and the induced change in the far-infrared transmission was measured. At 30 K, the carrier mobility is muapproximate to0.4 cm(2)/V s and decreases to muapproximate to0.2 cm(2)/V s at room temperature. The transient terahertz signal reveals the presence of free carriers that are trapped on the time scale of a few picoseconds or less, possibly through the formation of excitons, small polarons, or trapping by impurities. (C) 2004 American Institute of Physics.

引用

页码：891 / 893

页数：3

共 50 条

[1] Ultrafast Terahertz Complex Conductivity Dynamics of Layered MoS2 Crystal Probed by Time-Resolved Terahertz Spectroscopy
Yang, Yong
He, Chuan
Huang, Yuanyuan
Zhu, Lipeng
Zhou, Yixuan
Xu, Xinlong
[J]. FRONTIERS IN PHYSICS, 2021, 9
[2] Ultrafast carrier dynamics in microcrystalline silicon probed by time-resolved terahertz spectroscopy
Fekete, L.
Kuzel, P.
Nemec, H.
Kadlec, F.
Dejneka, A.
Stuchlik, J.
Fejfar, A.
[J]. PHYSICAL REVIEW B, 2009, 79 (11):
[3] Photoexcited carrier relaxation dynamics in pentacene probed by ultrafast optical spectroscopy: Influence of morphology on relaxation processes
Thorsmolle, V. K.
Averitt, R. D.
Demsar, J.
Smith, D. L.
Tretiak, S.
Martin, R. L.
Chi, X.
Crone, B. K.
Ramirez, A. P.
Taylor, A. J.
[J]. PHYSICA B-CONDENSED MATTER, 2009, 404 (19) : 3127 - 3130
[4] Ultrafast photocurrents in MoSe2 probed by terahertz spectroscopy
Yagodkin, Denis
Nadvornik, Lukas
Gueckstock, Oliver
Gahl, Cornelius
Kampfrath, Tobias
Bolotin, Kirill, I
[J]. 2D MATERIALS, 2021, 8 (02)
[5] Intraband Ultrafast Terahertz Conductivity Dynamics in Graphene
Zhang, Zeyu
Jia, Tingyuan
Zhang, Wenjie
Ma, Guohong
Du, Juan
[J]. 2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2019,
[6] Terahertz Spectroscopy of Ultrafast Carrier Dynamics in Nanomaterials
Hegmann, Frank A.
Cooke, David G.
Walther, Markus
[J]. 2008 33RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES, VOLS 1 AND 2, 2008, : 203 - 203
[7] Picosecond transient photoconductivity in functionalized pentacene molecular crystals probed by terahertz pulse spectroscopy
Hegmann, FA
Tykwinski, RR
Lui, KPH
Bullock, JE
Anthony, JE
[J]. PHYSICAL REVIEW LETTERS, 2002, 89 (22) : 227403 - 227403
[8] Observation of rapid carrier relaxation in graphene oxide probed by ultrafast terahertz spectroscopy
Kim, Jaeseok
Oh, Juyeong
In, Chihun
Lee, Yun-Shik
Norris, Theodore B.
Jun, Seong Chan
Choi, Hyunyong
[J]. 2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2014,
[9] Ultrafast electron dynamics at surfaces probed by resonant Auger spectroscopy
Wurth, W
Menzel, D
[J]. CHEMICAL PHYSICS, 2000, 251 (1-3) : 141 - 149
[10] Carrier and coherent lattice dynamics of Si probed with ultrafast spectroscopy
Riffe, DM
Sabbah, AJ
[J]. Physics of Semiconductors, Pts A and B, 2005, 772 : 1226 - 1227

← 1 2 3 4 5 →