Compounds, including metal borate compounds, and electronic semiconducting devices including one or more of the compounds. Compounds may be used in a hole transport layer of the electronic semiconducting devices. Display devices, which may include a plurality of OLED pixels. The OLED pixels may include one or more compounds, including metal borate compounds.

Compounds, including metal borate compounds, and electronic semiconducting devices including one or more of the compounds. Compounds may be used in a hole transport layer of the electronic semiconducting devices. Display devices, which may include a plurality of OLED pixels. The OLED pixels may include one or more compounds, including metal borate compounds.

The present invention relates to an electronic device comprising at least one layer comprising a borate salt, wherein the borate salt is comprised in the layer comprising the borate salt In an amount, by weight and/or by volume, exceeding the total amount of other components which may additionally be comprised in the layer, a display device comprising the same and a method for preparing the same.

A light-harvesting material comprises a perovskite absorber doped with a metal chalcogenide. The light-harvesting material may be used in a photovoltaic device, comprising (1) a first conductive layer, (2) an optional blocking layer, on the first conductive layer, (3) a semiconductor layer, on the first conductive layer, (4) a light-harvesting material, on the semiconductor layer, (5) a hole transport material, on the light-harvesting material, and (6) a second conductive layer, on the hole transport material.

The present invention provides for organometallic and organic dopants suitable for use in organic carrier transporting materials. Also provided are organic light emitting devices containing doped organic carrier transporting materials.

An object of the present invention is to provide a n-type semiconductor element having improved n-type semiconductor characteristics and excellent stability, where the n-type semiconductor element includes a second insulating layer, where the second insulating layer contains: A. (a) a compound having one carbon-carbon double bond or one conjugated system bound to at least one group represented by general formula (1) and at least one group represented by general formula (2); and (b) a polymer; or B. a polymer having, in its molecular structure, the remaining group after removing some hydrogen atoms from R.sup.1, R.sup.2, R.sup.3, or R.sup.4 in the compound (a), or the remaining group after removing some hydrogen atoms from the carbon-carbon double bond or the conjugated system in the compound (a).

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The present disclosure relates to the field of display technologies, and provides an organic electroluminescent device. The organic electroluminescent device comprises a hole injection layer. The hole injection layer includes at least one hole injection material and at least one free radical molecular material doped in the hole injection material.

A display device according to an embodiment of the present invention includes: a substrate; a lower electrode provided above the substrate; an insulating film provided above the lower electrode and having an opening; an organic layer arranged at least partly in the opening and electrically connected to the lower electrode; and an upper electrode electrically connected above the organic layer; the organic layer includes a hole injection layer, the opening includes a first area arranged to a center side, and a second area arranged on an outer side of the first area, and the hole injection layer has a higher p-dopant concentration in the first area than in the second area.

An organic light emitting display device may include a substrate, a first pixel electrode on the substrate, a pixel defining layer on the substrate, the pixel defining layer having an opening exposing a portion of the first pixel electrode, a second pixel electrode on the portion of the first pixel electrode exposed by the opening, a hole injection layer on the second pixel electrode, the hole injection layer including a metal oxide, an organic light emitting layer on the hole injection layer; and a common electrode on the organic light emitting layer.

A method of generating a light-matter hybrid species of charged polaritons at room temperature includes providing an organic semiconductor microcavity being a doped organic semiconductor sandwiched in a microcavity capable of generating an optical resonance and coupling light to the polaron optical transition in the organic semiconductor microcavity thereby forming polaron-polaritons. The doped organic semiconductor may be a hole/electron transport material having a polaron absorption coefficient exceeding 10.sup.2 cm.sup.−1 and capable of generating a polaron optical transition with a linewidth smaller than a predetermined threshold. The optical resonance of the microcavity has a resonance frequency matched with the polaron optical transition.