Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Structural, optical, and electrical properties of the organic molecular crystal 4-N,N- dimethylamino-4′-N′-methyl stilbazolium tosylate

Not Accessible

Your library or personal account may give you access

Abstract

We present dark conductivity, photoconductivity, and transient photoconductivity measurements of the organic salt 4-N,N-dimethylamino-4-N-methyl stilbazolium tosylate (DAST). By correlating these measurements to microscopic structural properties including both molecular orientation and intermolecular interactions, we have determined the charge-carrier generation and transport properties of DAST. The perfect alignment of the chromophores combined with the weak Van der Waals interactions [CHHC>2.5 Å (1 Å=0.1 nm)] determines a one-dimensional thermally activated conductivity with an activation energy of 0.34±0.03 eV along the chromophore chain. Photoconductivity that incorporates both positive and negative free charge carriers has been observed at a light energy of 1.6 eV, well below the first strong optical absorption band at 2.33 eV. That band is associated with intramolecular optical excitation. From transient photoconductivity data we found an upper limit of 3 ns to the free-carrier lifetime.

© 2002 Optical Society of America

Full Article  |  PDF Article
More Like This
Atomic-force microscope observation and molecular-scale flattening of the single-crystal surface of 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST)

H. Nanjo, P. Qian, N. Sanada, T. M. Suzuki, H. Takahashi, H. Ito, and K. Komatsu
Opt. Lett. 25(15) 1107-1109 (2000)

Generation of mid- to far-infrared ultrashort pulses in 4-dimethylamino-N-methyl-4-stilbazolium tosylate crystal

Takuya Satoh, Yoshihiro Toya, Shunsuke Yamamoto, Tsutomu Shimura, Kazuo Kuroda, Yoshinori Takahashi, Masashi Yoshimura, Yusuke Mori, Takatomo Sasaki, and Satoshi Ashihara
J. Opt. Soc. Am. B 27(12) 2507-2511 (2010)

Optical properties of 4-N,N-dimethylamino-4-N-methyl-stilbazolium 2,4,6-trimethylbenzenesulfonate crystals at terahertz frequencies

Marcel Stillhart, Arno Schneider, and Peter Günter
J. Opt. Soc. Am. B 25(11) 1914-1919 (2008)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved