摘要:
Luminescent materials and methods of forming such materials are described herein. In one embodiment, a luminescent material has the formula: [AaSnbXxX′x′X″x″][dopant], wherein A is included in the luminescent material as a monovalent cation; X, X′, and X″ are selected from fluorine, chlorine, bromine, and iodine; a is in the range of 1 to 5; b is in the range of 1 to 3; a sum of x, x′, and x″ is a+2b; and at least X′ is iodine, such that x′/(a+2b)≧⅕.
摘要:
Luminescent materials and methods of forming such materials are described herein. In one embodiment, a luminescent material has the formula: [AaSnbXxX′x′X″x″], where the luminescent material is polycrystalline; A is included in the luminescent material as a monovalent cation; X, X′, and X″ are selected from fluorine, chlorine, bromine, and iodine; a is in the range of 1 to 5; b is in the range of 1 to 3; a sum of x, x′, and x″ is in the range of 1 to 5; and at least X′ is iodine, such that x′/(x+x′+x″)≧⅕.
摘要:
Described herein are optical devices including resonant cavity structures. In one embodiment, an optical fiber includes: (1) an elongated core including an outer surface; (2) an inner reflector disposed adjacent to the outer surface of the core and extending substantially along a length of the core; (3) an outer reflector spaced apart from the inner reflector and extending substantially along the length of the core; and (4) an emission layer disposed between the outer reflector and the inner reflector and extending substantially along the length of the core, the emission layer configured to emit radiation that is guided within the optical fiber.
摘要:
Described herein are solar modules and related manufacturing methods. In one embodiment, a solar module includes: (1) a photovoltaic cell; and (2) a resonant cavity waveguide having a non-planar configuration and optically coupled to the photovoltaic cell, the resonant cavity waveguide including: (a) an outer reflector; (b) an inner reflector; and (c) an emission layer disposed between the outer reflector and the inner reflector with respect to an anti-node position within the resonant cavity waveguide, the emission layer configured to absorb incident solar radiation and emit radiation that is guided towards the photovoltaic cell, the emitted radiation including an energy band having a peak emission wavelength that is substantially matched to a bandgap energy of the photovoltaic cell.
摘要:
Described herein are solar modules and related manufacturing methods. In one embodiment, a solar module includes: (1) a photovoltaic cell; and (2) a resonant cavity waveguide optically coupled to the photovoltaic cell, the resonant cavity waveguide including: (a) a top reflector; (b) a bottom reflector; and (c) an emission layer disposed between the top reflector and the bottom reflector with respect to an anti-node position within the resonant cavity waveguide, the emission layer configured to absorb incident solar radiation and emit radiation that is guided towards the photovoltaic cell, the emitted radiation including an energy band having a spectral width no greater than 80 nm at Full Width at Half Maximum.
摘要:
Described herein are solar modules including spectral concentrators. In one embodiment, a solar module includes an active layer including a set of photovoltaic cells. The solar module also includes a spectral concentrator optically coupled to the active layer and including a luminescent material that exhibits photoluminescence in response to incident solar radiation. The photoluminescence has: (a) a quantum efficiency of at least 30 percent; (b) a spectral width no greater than 100 nm at Full Width at Half Maximum; and (c) a peak emission wavelength in the near infrared range.
摘要:
Described herein are techniques for authenticating and identifying objects using markings formed with correlated random patterns. In one embodiment, an object to be authenticated includes a substrate and a marking adjacent to the substrate. The marking includes a luminescent material distributed in accordance with a correlated random pattern, and the luminescent material exhibits photoluminescence having a quantum efficiency of at least 10 percent.
摘要:
Apparatus and methods for clock and data recovery are disclosed. In one embodiment, a clock and data recovery system includes a sampler, a deserializer, a phase detector and a frequency detector. The sampler may be configured to sample a serial data stream to produce data samples and transition samples. The deserializer may be configured to deserialize the data samples and the transition samples to produce deserialized data samples and deserialized transition samples. The deserialized data samples and the deserialized transition samples can be aligned and provided to the phase detector and the frequency detector, thereby improving phase alignment and cycle slip detection.