摘要:
Embodiments of the invention are directed to a transparent up-conversion device having two transparent electrodes. In embodiments of the invention, the up-conversion device comprises a stack of layers proceeding from a transparent substrate including an anode, a hole blocking layer, an IR sensitizing layer, a hole transport layer, a light emitting layer, an electron transport layer, a cathode, and an antireflective layer. In an embodiment of the invention, the up-conversion device includes an IR pass visible blocking layer,
摘要:
Embodiments of the invention are directed to an improved device for sensing infrared (IR) radiation with upconversion to provide an output of electromagnetic radiation having a shorter wavelength than the incident IR radiation, such as visible light. The device comprises an anode, a hole blocking layer to separate an IR sensing layer from the anode, an organic light emitting layer that is separated from the anode by the IR sensing layer, and a cathode. The hole blocking layer assures that when a potential is applied between the anode and the cathode the organic light emitting layer generates electromagnetic radiation only when the IR sensing layer is irradiated with IR radiation.
摘要:
Embodiments of the subject invention relate to a method and apparatus for providing an at: least partially transparent one-side emitting OLED. The at least partially transparent one-side emitting OLED can include a mirror, such as a mirror substrate, substrate with a transparent anode and a transparent cathode. The mirror can allow at least a portion of the visible spectrum of light to pass through, while also reflecting at least another portion of the visible spectrum of light. The mirror can reflect at least a portion of the visible light emitted by a light emitting layer of the OLED incident on a first surface of the mirror, while allowing another portion of the visible light incident on a second surface of the mirror to pass through the mirror.
摘要:
Embodiments of the subject invention relate to a method and apparatus for providing a apparatus that can function as a photovoltaic cell, for example during the day, and can provide solid state lighting, for example at night. The apparatus can therefore function as a lighting window. An embodiment can integrate an at least partially transparent one-side emitting OLED and a photovoltaic cell. The photovoltaic cell can be sensitive to infrared light, for example light having a wavelength greater than 1 μm. The apparatus can be arranged such that the one direction in which the OLED emits is toward the inside of a building or other structure and not out into the environment.
摘要:
Embodiments of the invention are directed to IR photodetectors with gain resulting from the positioning of a charge multiplication layer (CML) between the cathode and the IR sensitizing layer of the photodetector, where accumulating charge at the CML reduces the energy difference between the cathode and the CML to promote injection of electrons that result in gain for an electron only device. Other embodiments of the invention are directed to inclusion of the IR photodetectors with gain into an IR-to-visible up-conversion device that can be used in night vision and other applications.
摘要:
Photodetectors, methods of fabricating the same, and methods using the same to detect radiation are described. A photodetector can include a first electrode, a light sensitizing layer, an electron blocking/tunneling layer, and a second electrode. Infrared-to-visible upconversion devices, methods of fabricating the same, and methods using the same to detect radiation are also described. An Infrared-to-visible upconversion device can include a photodetector and an OLED coupled to the photodetector.
摘要:
Embodiments of the subject invention relate to a method and apparatus for providing a apparatus that can function as a photovoltaic cell, for example during the day, and can provide solid state lighting, for example at night. The apparatus can therefore function as a lighting window. An embodiment can integrate an at least partially transparent one-side emitting OLED and a photovoltaic cell. The photovoltaic cell can be sensitive to infrared light, for example light having a wavelength greater than 1 μm. The apparatus can be arranged such that the one direction in which the OLED emits is toward the inside of a building or other structure and not out into the environment.
摘要:
An IR photodetector with high detectivity comprises an IR sensitizing layer situated between an electron blocking layer (EBL) and a hole blocking layer (HBL). The EBL and HBL significantly reduce the dark current, resulting in a high detectivity while allowing use of a low applied voltage to the IR photodetector.
摘要:
Photodetectors, methods of fabricating the same, and methods using the same to detect radiation are described. A photodetector can include a first electrode, a light sensitizing layer, an electron blocking/tunneling layer, and a second electrode. Infrared-to-visible upconversion devices, methods of fabricating the same, and methods using the same to detect radiation are also described. An Infrared-to-visible upconversion device can include a photodetector and an OLED coupled to the photodetector.
摘要:
Embodiments of the invention are directed to a transparent up-conversion device having two transparent electrodes. In embodiments of the invention, the up-conversion device comprises a stack of layers proceeding from a transparent substrate including an anode, a hole blocking layer, an IR sensitizing layer, a hole transport layer, a light emitting layer, an electron transport layer, a cathode, and an antireflective layer. In an embodiment of the invention, the up-conversion device includes an IR pass visible blocking layer.