Abstract:
Organic light emitting devices are described wherein the emissive layer comprises a host material containing an emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including cyclometallated platinum, iridium and osmium complexes. The organic light emitting devices optionally contain an exciton blocking layer. Furthermore, improved electroluminescent efficiency in organic light emitting devices is obtained with an emitter layer comprising organometallic complexes of transition metals of formula L2MX, wherein L and X are distinct bidentate ligands. Compounds of this formula can be synthesized more facilely than in previous approaches and synthetic options allow insertion of fluorescent molecules into a phosphorescent complex, ligands to fine tune the color of emission, and ligands to trap carriers.
Abstract:
An organic light emitting device (OLED) is disclosed for which the hole transporting layer, the electron transporting layer and/or the emissive layer, if separately present, is comprised of a non-polymeric material. A method for preparing such OLED's using vacuum deposition techniques is further disclosed.
Abstract:
An organic light emitting device (OLED) is disclosed for which the hole transporting layer, the electron transporting layer and/or the emissive layer, if separately present, is comprised of a non-polymeric material. A method for preparing such OLED's using vacuum deposition techniques is further disclosed.
Abstract:
An optically-pumped laser having a small-molecule thin organic film of DCM doped Alq3. Carrier transport properties of the small-molecule organic materials, combined with a low lasing threshold provide a new generation of diode lasers employing organic thin films. An electrically-pumped variant is also described.
Abstract:
A high contrast organic light emitting device (OLED) display utilizing a transparent (TOLED) display structure with a low-reflectance absorber arranged behind the display. The TOLED display allows substantially all light incident on the display to pass through the display and to be absorbed by the low-reflectance absorber With the amount of light reflected by the display thus substantially reduced, the contrast of images displayed by the display is thus improved.
Abstract:
An organic light emitting device (OLED) is disclosed for which the hole transporting layer, the electron transporting layer and/or the emissive layer, if separately present, is comprised of a non-polymeric material. A method for preparing such OLED's using vacuum deposition techniques is further disclosed.
Abstract:
A waste treatment apparatus having an autoclave that includes a pressure vessel (11) having a first mouth part (20) to receive waste material and a second mouth part (19) to discharge treated material, with the autoclave being rotatable at a longitudinal axis to agitate the waste material during treatment and to discharge waste material from the autoclave.
Abstract:
Organic light emitting devices are Disclosed which are comprised of a heterostructure for producing electroluminescence wherein the heterostructure is comprised of an emissive layer containing a phosphorescent dopant compound. For example, the phosphorescent dopant compound may be comprised of platinum octaethylporphine (PtOEP), which is a compound having the chemical structure with the formula:
Abstract:
Organic light emitting devices are disclosed, which comprise a heterostructure for producing electroluminescence, wherein the heterostructure comprises an emissive layer containing a phosphorescent dopant compound. For example, the phosphorescent dopant compound may comprise platinum octaethylporphine (PtOEP), which is a compound having the chemical structure with the formula:
Abstract:
A method and apparatus for forming patterned coatings of thin film, non-polymeric compounds on a substrate. A mixture of the non-polymeric compound and a liquid carrier is pumped into the interior of a heated evaporation box having an internal temperature sufficient to convert substantially all of the non-polymeric compound and liquid carrier to a gaseous form. The non-polymeric compound and liquid carrier are then removed from the evaporation box via exit slit in the evaporation box. Adjacent to the exit slit, and maintained in a vacuum, is a first substrate upon which the non-polymeric compound condenses. The first substrate is in motion, for example on a web roller, thereby allowing a continuous coating of the non-polymeric compound to be applied to the first substrate. Once the non-polymeric compound is applied to one side of the first substrate, an energy source is then directed toward the opposite side of the first substrate. In this manner, a portion of the non-polymeric compound is removed from the first substrate. A second substrate is then provided adjacent to the first substrate, and the non-polymeric compound is thereby transferred from the first substrate onto the second substrate. By repeatedly transferring portions of the non-polymeric material from the first substrate to the second substrate in this manner, the thin film, non-polymeric materials can be formed onto the second substrate in a predetermined pattern, and in a continuous and highly efficient process.