In this study we present the effect of elevated temperatures from 300K to 400K on the electrical properties of copper Phthalocyanine (CuPc) based organic field effect transistors (OFET). Thin films of organic semiconductor CuPc (40nm) and semitransparent Al (20nm) were deposited in sequence, by vacuum evaporation on a glass substrate with previously deposited Ag source and drain electrodes with...

Intramolecular alkyne aromatization is a powerful tool that enables the synthesis of nonplanar polycyclic aromatic hydrocarbons. Herein, an unexpected intramolecular via trifluoroacetic acid-promoted cyclization described, in which two structural isomers, expanded [9]helicene (1) and π-extended double [4]helicene (2) are obtained. A possible rearrangement mechanism proposed to account for forma...

We report for the first time the use of a microfluidic supercritical antisolvent process (μSAS) to synthesize semiconducting polymer nanoparticles (NPs) of poly(3-hexylthiophene) (P3HT). Solvent-free P3HT NPs with average diameters as small as 36 ± 8 nm are obtained. They are continuously spray-coated on substrates to fabricate OFET devices, demonstrating hole mobility through the nanoparticle ...

some issues; leakage, tunneling currents, boron diffusion are threatening sio2 to be used as a good gate dielectric for the future of the cmos (complementary metal- oxide- semiconductor) transistors. for finding an alternative and novel gate dielectric, the nio (nickel oxide) and pva (polyvinyl alcohol) nano powders were synthesized with the sol-gel method and their nano structural properties w...

We have investigated features of liquid crystalline materials for organic polycrystalline field effect transistors (OFETs) with a model liquid crystalline material of 5,5”-dioctylterthiophene (8-TTP-8). Bulk mobility in polycrystalline thin films of 8-TTP-8 via its liquid crystalline phase was easily determined by time-of-flight experiments. Furthermore, we could evaluate impurity contamination...

In article number 2100724, Deyang Ji, Liqiang Li, Harald Fuchs, and co-workers summarize recent advances of nanospheres lithography in organic electronics, including their applications versatile electronic devices, such as field-effect transistors (OFETs), OFET-based sensors, vertical light-emitting (VOLETs), light emitting diodes (OLEDs), photovoltaic devices (OPVs) some new emerging devices.

Herein, we report the structural, electronic, and charge transfer properties of N-[5′-methyl-3′-isoxasolyl]-N-[(E)-1-(-2-thiophene)] methylidene] amine (L) its Fe2+, Co2+, Ni2+, Cu2+, Zn2+ complexes (dubbed A, B, C, D, E, respectively) using density functional theory (DFT). All molecules investigated were optimized at BP86/def2-TZVP/RI level theory. Single point energy calculations carried out ...

The mechanical properties and structural design flexibility of charge-trapping polymer electrets have led to their widespread use in organic field-effect transistor (OFET) memories. For example, the polyfluorene-based conjugated/insulating block copolymers (BCPs), confined fiberlike polyfluorene nanostructures insulating matrix act as effective hole-trapping sites, leading controllable memory p...

Organic semiconductors present several technological advantages as the active materials in the development of new, flexible electronics. Here we provide an overview of current developments in organic thin-film field-effect transistor (OFET)[1] and circuit technologies. Discussion and analysis are presented in the context of tetrabenzoporphyrin (TBP), a solution-processable organic semiconductor...

With its excellent mechanical flexibility, low-cost and low-temperature processing, the solution processed organic field-effect transistor (OFET) is a promising platform technology for developing ubiquitous sensor applications in digital health, environment monitoring and Internet of Things. However, a contradiction between achieving low voltage operation and having stable performance severely ...