The present invention relates to a composition comprising an electron-transporting host and a hole-transporting host, to the use thereof in electronic devices and electronic devices comprising said composition. The electron-transporting host is more preferably selected from the class of the triazine-dibenzofuran-carbazole systems or the class of the triazine-dibenzothiophene-carbazole systems. The hole-transporting host is preferably selected from the class of biscarbazoles.

The present application relates to copper-doped double perovskites, for example, copper-doped double perovskites of the formula (I) and to uses thereof, for example as low-bandgap materials such as a semiconducting material in a device. The present application also relates to methods of tuning the bandgap of a Cs.sub.2SbAgZ.sub.6 double perovskite (for example, wherein Z is Cl) comprising doping the double perovskite with copper.
Cs.sub.2Sb.sub.1-aAg.sub.1-bCu.sub.2xZ.sub.6  (I)

The present invention relates to a hybrid VTOL jet car comprising a light weight floatable chassis adapted for carrying a payload, a retractable tail section attached to a light weight floatable chassis at rear end adapted for stabilizing the hybrid VTOL jet car, a plurality of wheels at the bottom of the hybrid VTOL jet car, a plurality of retractable wings on the sides of light weight floatable chassis, adapted for manoeuvring the hybrid VTOL jet car. Disclosed embodiments further comprising a plurality of thrust-producing engines adapted for generating the thrust required for driving the hybrid VTOL jet car on a surface as well as in the air and a plurality of parachutes attached to the hybrid VTOL jet car to safely land the hybrid VTOL jet car under emergency.

Disclosed is a compound represented by chemical formula (1). In addition, disclosed is an organic electronic element comprising: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer contains the compound represented by chemical formula (1). Light-emitting efficiency, stability and lifespan may be enhanced when the compound represented by chemical formula (1) is contained in the organic layer.

Organic photovoltaic cells (OPVs) and their compositions are described herein. In one or more embodiments, the acceptor with an active layer of an OPV includes is a non-fullerene acceptor. Such non-fullerene acceptors may provide improved OPV performance characteristics such as improved power conversion efficiency, open circuit voltage, fill factor, short circuit current, and/or external quantum efficiency. One example of a non-fullerene acceptor is (4,4,10,10-tetrakis(4-hexylphenyl)-5,11-(2-ethylhexyloxy)-4,10-dihydro-dithienyl[1,2-b:4,5b′] benzodi-thiophene-2,8-diyl) bis(2-(3-oxo-2,3-dihydroinden-5,6-dichloro-1-ylidene) malononitrile.

Disclosed are a compound represented by Chemical Formula 1, and a film, an infrared sensor, and an electronic device including the compound.

##STR00001##

In Chemical Formula 1, Q.sup.1, Q.sup.2, X.sup.1, X.sup.2, R.sup.1, R.sup.2, and A.sup.1 are the same as in the specification.

Disclosed are a compound represented by Chemical Formula 1, and a film, an infrared sensor, and an electronic device including the compound.

##STR00001##

In Chemical Formula 1, Q.sup.1, Q.sup.2, X.sup.1, X.sup.2, R.sup.1, R.sup.2, and A.sup.1 are the same as in the specification.

An organic semiconducting compound and an organic photoelectric component containing the same are provided. The organic semiconducting compound has a novel chemical structure to make the organic semiconducting compound have good response to the infrared light. The organic semiconducting compound can be applied to the organic photoelectric components such as organic photodetector (OPD), organic photovoltaic (OPV) cell, and organic field-effect transistor (OFET). Thus, the organic photoelectric components have better light absorption range and photoelectric response while in use.

A metal-organic chalcogenolate (MOC) includes silver phenylselenolate functionalized with at least one functional group. The functional group may be methyl (CH.sub.3), dimethylamine (N(CH.sub.3).sub.2), thiomethyl (SCH.sub.3), fluoro (F) trifluoromethyl (CF.sub.3), cyanide (CN), carboxy (COOH), nitrito (NO.sub.2), or alkoxy (OC.sub.xH.sub.y). The MOC can be in the form of a single crystal consisting essentially of a nanocluster (0D), a nanotube (1D), or a single monolayer (2D).

The invention relates to novel organic semiconducting compounds containing a polycyclic unit, to methods for their preparation and educts or intermediates used therein, to compositions, polymer blends and formulations containing them, to the use of the compounds, compositions and polymer blends as organic semiconductors in, or for the preparation of, organic electronic (OE) devices, especially organic photovoltaic (OPV) devices, perovskite-based solar cell (PSC) devices, organic photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD, OFET and OLED devices comprising these compounds, compositions or polymer blends.