Among all organic semiconductors, pentacene has been shown to have the highest thin film mobility reported to date. The crystalline structure of the first few pentacene layers deposited on a dielectric substrate is strongly dependent on the dielectric surface properties, directly affecting the charge mobility of pentacene thin film OTFTs. Herein, we report that there is a direct correlation bet...

The realization of wearable electronic devices with extremely thin and flexible form factors has been a major technological challenge. While substrates typically limit the thickness of thin-film electronic devices, they are usually necessary for their fabrication and functionality. Here we report on ultra-thin organic transistors and integrated circuits using device components whose substrates ...

Organic/inorganic interfaces play a crucial role in organic electronic devices such as organic field effect transistors (OFETs), organic light emitting diodes (OLEDs) and organic photovoltaics (OPVs). The properties of organic thin-film transistors depend on the transport of charges induced at the semiconductor/gate insulator interface. Structural defects near this interface influence the charg...

NdON, HfON, and their mixtures (NdxHf(1−x)ON) with different Hf contents are adopted as the gate dielectrics of pentacene organic thin-film transistors (OTFTs). Their capacitance–voltage characteristics reveal that incorporation generates negative fixed charges in dielectric for assisting applied voltage, thus achieving a low threshold voltage OTFT. X-ray photoelectron spectroscopy (XPS) atomic...

The mechanical properties of interfaces and more precisely the adhesion are of great importance to understand the reliability of thin film devices. Organic thin film transistors (OTFT) on flexible substrate are a new class of electronic components. Since these devices are flexible and intended for different fields of application like sensors and displays, they will undergo a lot of mechanical a...

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