High performance organic field-effect transistors using ambient deposition of tetracene single crystals

• Single-crystal tetracene field-effect transistors studied.
• Active layer deposited under near ambient conditions using OVLS.
• Mobility of OVLS-grown tetracene is comparable to high quality crystalline films prepared by physical vapor deposition.

Organic molecular crystals (OMCs) are of significant interest due to their potential use in transistors, photovoltaic devices, light emitting diodes, and other applications. However, conventional vacuum-based methods of growing crystalline OMC films are costly and provide limited control over crystal growth. In this study, we present a new method for preparing high performance single-crystal tetracene field-effect transistors under near-ambient conditions using organic vapor-liquid-solid (OVLS) deposition. We find that the mobility of OVLS-grown tetracene is comparable to high quality crystalline films prepared by physical vapor deposition. These results establish OVLS deposition as a relatively low cost, low substrate temperature, and ambient pressure method for growing high quality OMC films for device applications.

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