Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Dynamics of a photoinduced phase transition in polydiacetylene crystals

Dynamics of a photoinduced phase transition in polydiacetylene crystals The dynamical process of the photoinduced phase transition in polydiacetylene (PDA) single crystals has been investigated by time-resolved spectroscopy with varying temperature, excitation photon energy, and intensity. The photoinduced phase transition can be driven bidirectionally between the two ( A and B ) phases by dichromatic irradiation of a laser pulse, when the temperature of the PDA crystal is kept around the phase transition temperature ( T c ). It was found that primary process of the photoinduced phase transition is mostly completed within 50 ns. In addition, occurrence of a transient domain injection has been confirmed at temperatures far below and above T c . Together with the time-resolved measurement of photocurrent, we have found a close correlation between the photocurrent intensity and the phase conversion efficiency. This suggests that the domain walls separating the A and B phases can carry the charge. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Dynamics of a photoinduced phase transition in polydiacetylene crystals

Physical Review B , Volume 52 (9) – Sep 1, 1995
9 pages

Loading next page...
 
/lp/american-physical-society-aps/dynamics-of-a-photoinduced-phase-transition-in-polydiacetylene-7Pd6zr5oVd

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
American Physical Society (APS)
Copyright
Copyright © 1995 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.52.6265
Publisher site
See Article on Publisher Site

Abstract

The dynamical process of the photoinduced phase transition in polydiacetylene (PDA) single crystals has been investigated by time-resolved spectroscopy with varying temperature, excitation photon energy, and intensity. The photoinduced phase transition can be driven bidirectionally between the two ( A and B ) phases by dichromatic irradiation of a laser pulse, when the temperature of the PDA crystal is kept around the phase transition temperature ( T c ). It was found that primary process of the photoinduced phase transition is mostly completed within 50 ns. In addition, occurrence of a transient domain injection has been confirmed at temperatures far below and above T c . Together with the time-resolved measurement of photocurrent, we have found a close correlation between the photocurrent intensity and the phase conversion efficiency. This suggests that the domain walls separating the A and B phases can carry the charge.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Sep 1, 1995

There are no references for this article.