摘要:
A method for performing a phase transition of an organic complex in which the phase transition can be performed with a high performance under specific conditions and a functional element using the same are provided. When EDO-TTF-based complex crystals are irradiated with photons as weak as about 1 to about 10 μJ per square centimeter, the EDO-TTF-based complex crystals undergo a phase transition to a metal phase (high temperature phase) and an insulator phase (low temperature phase), thereby changing the reflection spectrum and the electric conductivity. Thus, the operation is performed in a wavelength region of 1.5 to 0.8 μm with a high-sensitivity, at a high speed, and at room temperature.