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.

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.

A sensor-embedded display panel includes a substrate, a light emitting element on the substrate and including a light emitting layer, and a light absorption sensor on the substrate and including a light absorbing layer arranged in parallel with the light emitting layer along an in-plane direction of the substrate. The light absorbing layer is configured to absorb light of a red wavelength spectrum, a green wavelength spectrum, a blue wavelength spectrum, or any combination thereof. The light emitting layer includes a first organic material and the light absorbing layer includes a second organic material. A difference between respective sublimation temperatures of the first and second organic materials is less than or equal to about 150° C., wherein each sublimation temperature is a temperature at which a weight reduction of 10% relative to the initial weight occurs during thermogravimetric analysis under an ambient pressure of about 10 Pa or less.

A sensor-embedded display panel includes a substrate, a light emitting element on the substrate and including a light emitting layer, and a light absorption sensor on the substrate and including a light absorbing layer arranged in parallel with the light emitting layer along an in-plane direction of the substrate. The light absorbing layer is configured to absorb light of a red wavelength spectrum, a green wavelength spectrum, a blue wavelength spectrum, or any combination thereof. The light emitting layer includes a first organic material and the light absorbing layer includes a second organic material. A difference between respective sublimation temperatures of the first and second organic materials is less than or equal to about 150° C., wherein each sublimation temperature is a temperature at which a weight reduction of 10% relative to the initial weight occurs during thermogravimetric analysis under an ambient pressure of about 10 Pa or less.

A synthetic method of a fused heteroaromatic compound includes preparing a first intermediate represented by Chemical Formula 1, obtaining a second intermediate by reacting the first intermediate and an aldehyde compound, obtain a third intermediate by performing deprotection and reduction reactions on the second intermediate, and obtaining a fused heteroaromatic compound by performing a cyclization reaction on the third intermediate.

A synthetic method of a fused heteroaromatic compound includes preparing a first intermediate represented by Chemical Formula 1, obtaining a second intermediate by reacting the first intermediate and an aldehyde compound, obtain a third intermediate by performing deprotection and reduction reactions on the second intermediate, and obtaining a fused heteroaromatic compound by performing a cyclization reaction on the third intermediate.

A low-molecular-weight fused polycyclic heteroaromatic compound has a compact planar structure in which seven or more aromatic rings and heteroaromatic rings are fused together, and thereby exhibits relatively high charge mobility, and improved processibility due to improved dissolubility for a solvent. An organic thin film and an electronic device include the fused polycyclic heteroaromatic compound expressed in Chemical Formula 1.

A low-molecular-weight fused polycyclic heteroaromatic compound has a compact planar structure in which seven or more aromatic rings and heteroaromatic rings are fused together, and thereby exhibits relatively high charge mobility, and improved processibility due to improved dissolubility for a solvent. An organic thin film and an electronic device include the fused polycyclic heteroaromatic compound expressed in Chemical Formula 1.

A compound represented by Chemical Formula 1, a sensor including the compound, a sensor-embedded display panel including the compound, and an electronic device including the compound.

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In Chemical Formula 1, X.sup.1, X.sup.2, X.sup.3, Ar.sup.1, L.sup.1, A, R1, and R.sup.2 are the same as in the specification.

A method of synthesizing a fused heteroaromatic compound includes obtaining a first intermediate from a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2, obtaining a second intermediate including a ring having a chalcogen element from the first intermediate, and obtaining a fused heteroaromatic compound by a cyclization reaction of the second intermediate.