Abstract
Halogen-bridged nickel compounds have attracted much attention because they show large optical nonlinearity and photoinduced insulator-metal transition. We report a new fabrication method for thin film samples of the Ni compounds. Using these thin film samples, we have performed femtosecond pump-probe spectroscopy. Photomodulated absorption induced by resonant and nonresonant photoexcitation on charge-transfer band have revealed that excitons decay very fast with the time constant τ less than 2 picoseconds and charge carriers decay relatively slow with τ > 20 ps. The slower decay of the charge carriers is attributable to the formation of polarons and the resultant decrease of their mobility.
Original language | English |
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Article number | 012011 |
Journal | Journal of Physics: Conference Series |
Volume | 148 |
DOIs | |
Publication status | Published - 2009 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)