Thin films of a charge transfer complex, hepta-(tetrathiafulvalene) pentaiodide ( TTF7I5, TTF:I0-71 ), were prepared by double source evaporation of TTF and iodine. Crystalline films of TTF:I0-7i were obtained when substrate temperatures were kept between 0°C and 25°C. Orientation alignment of the crystalline films were affected by supply rate of iodine. By controlling the substrate temprature and the supply rate of iodine, highly oriented crystalline films were grown on mica substrates. It showed strong dichroism and anisotropic electrical propert ies.
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Yudasaka, M., Hironaga, K., Yamochi, H. et al. Thin Film Formations of Charge Transfer Complexes with Metallic Properties by Vacuum Deposition Method. MRS Online Proceedings Library 173, 137–142 (1989). https://doi.org/10.1557/PROC-173-137