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ArticleOriginal scientific text

Title

Photoinduced Ionic to Neutral Phase Transition in TTF-CA Studied by Time-Resolved Infrared Vibrational Spectroscopy

Authors 1, 1, 1, 1, 1, 2,

Affiliations

  1. Department of Materials Science, Tokyo Institute of Technology, Megro-ku, Tokyo 152-8551, Japan
  2. CREST, Japan Science and Technology Agency (JST), Japan
  3. Department of Environ. Chem. and Engineering, Tokyo Institute of Technology, Nagatsuta-Yokohama, 226-8502, Japan

Abstract

We studied the photoinduced ionic to neutral phase transition in tetrathiafulvalene-p-chloranil (TTF-CA) using time-resolved infrared vibrational spectroscopy. By monitoring the charge sensitive b1u ν10 band of CA after photoexcitation by a 1.55 eV pulse, we found that the photoinduced N-phase has the same charge of the N-phase in thermal equilibrium and there is no charge variation during the photoinduced phase transition. We also found that the photoinduced N-phase grows through at least two steps over 300 ps.

Keywords

ENG
78.30.Jw, 78.47.D-, 78.47.jg

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Acta Physica Polonica A
2012/121/2
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Pages:
340-342
Main language of publication
English
Published
2012-02

DOI: 10.12693/APhysPolA.121.340

Exact and natural sciences