Abstract:
The invention relates to an electroluminescent device with a transparent cathode. Said electroluminescent device comprises a substrate (1) and, adjacent to said substrate (1), a laminated body composed of a first electrode (2), an electroluminescent layer (3) and a second metallic electrode (4). Said second electrode (4) is covered with transparent dielectric layers (5), which increase the transmission of light through the second metallic electrode (4) and serve as filters.
Abstract:
The invention relates to a light emitting device, especially a LED comprising a SiAION material with a transparency of = 10 % to = 85 % for light in the wavelength range from = 550 nm to = 1000 nm.
Abstract:
The present invention relates to a LED comprising a substrate layer (10) with a first surface and a second surface opposing the first surface and having a refractive index of n
Abstract:
An organic light-emitting diode comprising a front electrode member, a counterelectrode member, an organic electroluminescent member comprising an organic electroluminescent material arranged between the front electrode member and the counterelectrode member, and a UV-protective filter member.
Abstract:
The invention describes a light-emitting device which comprises at least a substrate (1), an anode (2), a first hole transport layer (3), a light-emitting layer (5) and a cathode (6), and in which a first hole blocking layer (4) is arranged between the first hole transport layer (3) and the light-emitting layer (5). The hole +ocking layer (4) reduces the concentration of holes which reach the light-emitting layer (5) and thus the concentration of holes, which are usually the majority charge carriers, can be adapted to the electron current.
Abstract:
The invention relates to an illumination system comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing a portion of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light; wherein said at least one phosphor is a green-emitting cerium-activated lutetium-aluminum-garnet of general formula (Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12:CeaPrb wherein 0