Multifaceted Study of CuTCNQ Thin-Film Materials. Fabrication, Morphology, and Spectral and Electrical Switching Properties

A series of CuTCNQ (TCNQ = 7,7,8,8-tetracyano- p -quinodimethane) thin-film materials were prepared by different methods or under different conditions and characterized by scanning electron microscopic analyses, infrared, Raman, and UV−vis spectral analyses, and current−voltage characteristic measurements. All of the spectral analyses were compared with those of chemically synthesized pure CuTCNQ powder produced by the metathetical reaction of CuI and TCNQ. The effects of the preparation methods or growth parameters upon the morphology of the film materials and their physical properties were discussed.