摘要:
An organic photosensitive optoelectronic device having a plurality of cells disposed between a first electrode and a second electrode. Each cell includes a photoconductive organic hole transport layer adjacent to a photoconductive organic electron transport layer. A metal or metal substitute is disposed between each of the cells. At least one exciton blocking layer is disposed between the first electrode and the second electrode.
摘要:
Organic photosensitive optoelectronic devices (“OPODs”) which include an exciton blocking layer to enhance device efficiency. Single heterostructure, stacked and wave-guide type embodiments. Photodetector OPODs having multilayer structures and an exciton blocking layer. Guidelines for selection of exciton blocking layers are provided.
摘要:
A method for tuning the wavelength of light emitted by an organic light emitting device. An emissive dopant molecule is selected, adapted to emit light when present as a dopant in an emissive layer of the organic light emitting device. The wavelength of light emitted by said emissive dopant molecule depends on the local dipole moment of the emissive layer. The local dipole moment of the emissive layer that would result in said emissive dopant molecule emitting a desired wavelength of light is determined, and an emissive layer is fabricated, doped with the emissive dopant molecule and having the local dipole moment that results in the emissive dopant molecule emitting the desired wavelength of light.
摘要:
A stacked organic photosensitive optoelectronic device optimized to enhance desired characteristics such as external quantum efficiency and voltage is described. The photosensitive optoelectronic device has a plurality of photosensitive optoelectronic subcells electrically configured in series. The substrate may be the bottom electrode or there may be a bottom electrode distinct from the substrate. Each subcell comprises one or more organic photoconductive layers between electrode layers or charge transfer layers. In one embodiment the top electrode is transparent. In other embodiments two or more electrodes are transparent. In other embodiments photosensitive optoelectronic devices with multilayer photoconductive structures and photosensitive optoelectronic devices with a reflective layer or a reflective substrate are disclosed.
摘要:
An organic light emitting device (OLED) having an inverted structure including a cathode layer which is deposited on a substrate and on top of which an electron transporting layer (ETL), an electroluminescent (EL) layer, a hole transporting layer (HTL), a protection layer and an anode are deposited in sequence. The inverted OLED (IOLED) provides improved longevity, flexibility and efficiency over conventional OLEDs.
摘要:
An organic luminescent coating such as Aluminum-Tris-Quinolate is applied to a light detector for converting UV to green light to improve the efficiency of the light detector. The coating also provides anti-reflection properties when of sufficient thickness.
摘要:
A multicolor organic light emitting device employs vertically stacked layers of double heterostructure devices which are fabricated from organic compounds. The vertical stacked structure is formed on a glass base having a transparent coating of ITO or similar metal to provide a substrate. Deposited on the substrate is the vertical stacked arrangement of three double heterostructure devices, each fabricated from a suitable organic material. Stacking is implemented such that the double heterostructure with the longest wavelength is on the top of the stack. This constitutes the device emitting red light on the top with the device having the shortest wavelength, namely, the device emitting blue light, on the bottom of the stack. Located between the red and blue device structures is the green device structure. The devices are configured as stacked to provide a staircase profile whereby each device is separated from the other by a thin transparent conductive contact layer to enable light emanating from each of the devices to pass through the semitransparent contacts and through the lower device structures while further enabling each of the devices to receive a selective bias. The devices are substantially transparent when de-energized, making them useful for heads-up display applications.
摘要:
A method of fabricating a low-cost, flexible and highly efficient photovoltaic device. The method includes providing a layer of thin film, shaping the thin film into a plurality of parabolic shaped concentrators, forming an aperture in the bottom of each of the parabolic shaped concentrators, coating the concentrators with a reflective material, encapsulating the concentrators with a transparent insulating layer, depositing a photovoltaic cell on the bottom parabolic shaped concentrators, and depositing an anti-reflection coating on the top of the parabolic shaped concentrators.
摘要:
A method of fabricating a device is provided. A shadow mask is positioned in a first position over a substrate. A first process is performed on the substrate through the shadow mask. After the first process is performed, the shadow mask is moved to a second position over the substrate, measured relative to the first position. After the shadow mask is moved to the second position, a second process is performed on the substrate through the shadow mask.
摘要:
A patterning system with a photoresist overhang allows material to be deposited onto a substrate in various positions by varying the angle from which the material is deposited, and by rotating the substrate. The patterning system can be used to fabricate a stack of organic light emitting devices on a substrate using the same patterning system and without removing the substrate from vacuum.