An article includes a flexible electronic component and a flexible support coupled to the flexible electronic component. The flexible support is configured to support the flexible electronic component but also limit local bending of the flexible component. The flexible support defines a plurality of hinge points configured to facilitate movement of the article. The plurality of hinge points are positioned such that the article has a desired bending range.

Support structures for a flexible electronic component

Disclosed are certain polymeric compounds and their use as organic semiconductors in organic and hybrid optical, optoelectronic, and/or electronic devices such as photovoltaic cells, light emitting diodes, light emitting transistors, and field effect transistors. The disclosed compounds can provide improved device performance, for example, as measured by power conversion efficiency, fill factor, open circuit voltage, field-effect mobility, on/off current ratios, and/or air stability when used in photovoltaic cells or transistors. The disclosed compounds can have good solubility in common solvents enabling device fabrication via solution processes.

Conjugated polymers and their use in optoelectronic devices

An attachable article or device, such as a wristband, includes a flexible electronic display disposed thereon in a manner that is bendable or conformable to a user's wrist or other curved surface, and that enables various images to be displayed on the electronic display in a manner that is easily viewable to the user. The attachable article implements a messaging routine that enables a user or wearer to receive notifications of incoming messages and to selectively view incoming messages or indications thereof.

Attachable article with signaling, split display and messaging features

A polyimide precursor including at least one repeating unit represented by the following chemical formula (1): in which A is an arylene group; and X 1 and X 2 are each independently hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms, and a polyimide obtained from the polyimide precursor has a coefficient of linear thermal expansion from 50° C. to 400° C. of 100 ppm/K or less.

Polyimide precursor and polyimide

The functionality of common organic semiconductor materials is determined by their chemical structure and crystal modification. While the former can be fine-tuned via synthesis, a priori control over the crystal structure has remained elusive. We show that the surface tension is the main driver for the plate-like crystallization of a novel small organic molecule n-type semiconductor at the liquid–air interface. This interface provides an ideal environment for the growth of millimeter-sized semiconductor platelets that are only few nanometers thick and thus highly attractive for application in transistors. On the basis of the novel high-performance perylene diimide, we show in as-grown, only 3 nm thin crystals electron mobilities of above 4 cm2/(V s) and excellent bias stress stability. We suggest that the established systematics on solvent parameters can provide the basis of a general framework for a more deterministic crystallization of other small molecules.

High-Mobility, Ultrathin Organic Semiconducting Films Realized by Surface-Mediated Crystallization

Disclosed are new semiconductor materials prepared from perylene-imide copolymers. Such polymers can exhibit high n-type carrier mobility and/or good current modulation characteristics. In addition, the compounds of the present teachings can possess certain processing advantages such as solution-processability and/or good stability at ambient conditions.

Perylene-imide semiconductor polymers

The present teachings provide semiconducting compounds, materials prepared from such compounds, methods of preparing such compounds and semiconductor materials, as well as various compositions, composites, and devices that incorporate the compounds and semiconductor materials. Specifically, compounds of the present teachings can have higher electron-transport efficiency and higher solubility in common solvents compared to related representative compounds.

Perylene semiconductors and methods of preparation and use thereof

Disclosed are new semiconductor materials prepared from dimeric perylene compounds. Such compounds can exhibit high n-type carrier mobility and/or good current modulation characteristics. In addition, the compounds of the present teachings can possess certain processing advantages such as solution-processability and/or good stability at ambient conditions.

Semiconductor materials and methods of preparation and use thereof

Disclosed are new semiconductor materials prepared from polycyclic compounds. Such compounds can exhibit high n-type carrier mobility and/or good current modulation characteristics. In addition, the compounds of the present teachings can possess certain processing advantages such as solution-processability and/or good stability at ambient conditions.

Rylene-based semiconductor materials and methods of preparation and use thereof

Phenacene compounds of formula (I) are disclosed. All the variables in the formula are the same as defined in the description. A thin film semiconductor comprising the above compounds, and a field effect transistor device, a photovoltaic device, an organic light emitting diode device and a unipolar or complementary circuit device comprising the thin film are also disclosed.

Florian Doetz

Papers

Perylene-imide semiconductor polymers

Perylene semiconductors and methods of preparation and use thereof

Semiconductor materials and methods of preparation and use thereof

Rylene-based semiconductor materials and methods of preparation and use thereof

Phenacene compounds for organic electronics