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Synthesis of a p‑Type Semiconducting Phenothiazine Exfoliatable Layered Crystal

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journal contribution
posted on 13.08.2013, 00:00 by Minkyung Lee, Ji Eun Park, Chibeom Park, Hee Cheul Choi
Phenothiazine (PTZ) crystals are grown by a physical vapor transport method in a horizontal tube furnace. The resulting disk-type PTZ single crystals have a layered structure, which can be mechanically exfoliated into stacked individual layers to exhibit various colors depending on the thickness. The PTZ single-crystal field-effect transistor (FET) devices exhibit a p-type semiconducting property with 3.03 × 10–6 S/cm electrical conductivity, 1.15 × 10–4 cm2/(V s) carrier mobility, and a 104 on/off ratio.