Absorber-radiator structure for solar thermophotovoltaic cell and preparation method

• Main Authors: ZHU YU, HOU GUOZHI, XU JUN, WANG QINGYUAN
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; SEMICONDUCTOR DEVICES; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

The invention discloses an absorber-radiator structure for a solar thermal photovoltaic cell. The absorber-radiator structure comprises an integrated structure, wherein a silicon nano array structure is used as an absorber on one side of the integrated structure, and a metal-Bragg reflector structure is used as a radiator on the other side of the integrated structure; a substrate silicon wafer adopted by the silicon nano array is double-polished p-type or n-type monocrystalline silicon, metal of the metal-Bragg reflector structure adopts high-melting-point metal tantalum, tungsten or molybdenum, and the Bragg reflector structure adopts a silicon nitride and silicon oxynitride alternate multi-layer laminated structure. According to the structure, large-scale preparation can be carried out through a simple micromachining mode, excellent optical absorption and efficient solar energy utilization can be achieved, narrow-band radiation aiming at the band gap position of a narrow-band-gap photovoltaic cell is achiev