There is a polymeric photovoltaic cell (or solar cell) with inverted structure having an anode; an anodic buffer layer; an active layer having at least one photoactive organic polymer as electron-donor and at least one electron-accepting organic compound; a cathodic buffer layer; and a cathode. The at least one photoactive organic polymer is selected from conjugated polymers comprising an anthraditiophenic derivative having a general formula (I):

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The polymeric photovoltaic cell (or solar cell) with inverted structure shows good values of power conversion efficiency (PCE) (η) and can be advantageously used in the construction of photovoltaic modules (or solar modules), either on a rigid support or on a flexible support.

The present inventors have focused the fact that an arylamine material having a specific structure is excellent in hole injection/transport ability, thin film stability and durability. The arylamine compound of the above can be selected as a material for the hole transport layer, holes injected from the anode side can be efficiently transported. Furthermore, various organic EL devices combining electron transport materials having a specific structure and the like were manufactured, and the characteristics of the devices were evaluated diligently.

The present application provides a nitrogen-containing compounds represented by formula I-A, electronic elements and electronic devices. The application relates to the field of organic material. The nitrogen-containing compounds can improve the performance of electronic elements.

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An organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region, wherein the hole transport region includes a polycyclic compound represented by Formula 1, and the device shows high emission efficiency:

##STR00001##

An organic electroluminescence device includes an anode, a cathode, an emitting layer between the anode and the cathode, and a first hole transporting layer between the anode and the emitting layer, in which the first hole transporting layer is directly adjacent to the emitting layer, the first hole transporting layer contains a first compound represented by formula (1) below, and the first compound has at least one group represented by formula (11) below.

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A solid-state imaging device according to an embodiment of the present disclosure includes: a plurality of photoelectric converters that is stacked on a semiconductor substrate, and has wavelength selectivities different from each other; and a wiring line that is formed on the semiconductor substrate, and is electrically coupled to the plurality of photoelectric converters. Each of the photoelectric converters includes a photoelectric conversion film, and a first electrode and a second electrode that are disposed with the photoelectric conversion film interposed therebetween. The wiring line extends in a direction normal to the semiconductor substrate, and includes a vertical wiring line formed in contact with the second electrode of each of the photoelectric converters.

The present invention relates to the preparation and application of an O∧C∧N∧N tetradentate platinum (II) complex. The complex of the present invention has a structure as shown in Formula (I) below. Compared with a reference device, the organic light-emitting device prepared by the present invention has better performance improvement, and the novel O∧C∧N∧N tetradentate platinum (II) complex has great application value. The tetradentate platinum (II) complex involved in the present invention is based on a carbazole framework, and has a large π-conjugated rigid planar structure, which can greatly reduce non-radiative energy dissipation such as intramolecular rotation and vibration, and is conducive to improving the luminous efficiency and performance of the platinum (II) complex. The O∧C∧N∧N tetradentate platinum (II) complex metal organic material prepared by the present invention has great application values in organic light-emitting diodes, and is used as a phosphorescent doping material to produce a red light OLED device with high luminous efficiency.

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The present invention relates to a metal complex having a structure of chemical formula (I). The metal complex is applied to an organic light-emitting device which emits deep red or near-infrared light, and shows a lower driving voltage and higher luminous efficiency, and has greatly prolonged service life. Therefore, the metal complex has the potential of being applied in the field of organic light-emitting devices. Also provided is an organic light-emitting device, including a cathode, an anode, and an organic layer. The organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer; and at least one layer in the organic layer contains the compound of structural formula (I).

##STR00001##

The present specification provides a heterocyclic compound represented by Chemical Formula 1, an organic light emitting device comprising the same, a composition for an organic material layer of an organic light emitting device, and a method for manufacturing an organic light emitting device.

To provide an organic electroluminescent device realizing high efficiency and low voltage characteristics. A light-emitting layer including compounds of (1) and (2) and a dopant is included. X represents N or CR.sup.3, wherein at least one X represents N. R.sup.1 represents (1b), R.sup.2 represents (1c), and R.sup.3 represents an alkyl group or the like. Y represents O, S, NR.sup.4, or CR.sup.5R.sup.6, R.sup.4 to R.sup.6 each represent an alkyl group or the like, and one of R.sup.7 to R.sup.14 binds to a ring in (1). * represents a binding position to a ring in (1), and rings C and D are each an aromatic ring fused to an adjacent ring. R.sup.15, R.sup.16 and R.sup.17 have the same meaning as R.sup.3 (a and b represent the number of substitutions). R.sup.19 has the same meaning as R.sup.4, and R.sup.20 to R.sup.27 each represent CR.sup.3, CR.sup.28 or N and at least one thereof represents CR.sup.28, and R.sup.28 represents formula (2b). Z represents O, S, NR.sup.37, or CR.sup.38R.sup.39, R.sup.37 to R.sup.39 each has the same meaning as R.sup.4, and one of R.sup.29 to R.sup.36 binds to a ring in (2) and the others represent CR.sup.3 or N.