Solar spectrum selective absorbing coating with continuously adjustable absorption edge

• Main Authors: SUN ZHIQIANG, WANG HONG, LIU JING
• Format: Patent
• Language: English
• Published: 20.05.2015
• Subjects: BLASTING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; RANGES; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VENTILATING; WEAPONS

The utility model relates to the field of solar spectrum selective absorbing coatings, in particular to a solar spectrum selective absorbing coating with a continuously adjustable absorption edge. The solar spectrum selective absorbing coating with the continuously adjustable absorption edge comprises a base layer, and an infrared reflecting layer, an absorbing layer and an antireflection layer are arranged on the base layer from bottom to top in sequence. The absorbing layer sequentially comprises a metal sub layer, a semiconductor germanium sub layer and a metal-nitride-oxide-semiconductor sub layer from bottom to top. The solar spectrum selective absorbing coating with the continuously adjustable absorption edge achieves the continuously adjustable absorption edge from high solar absorption to low infrared radiation, and the absorption edge moves towards the direction of short waves, the radiation rate is lowered, so that solar spectrum selective absorbing coating with the continuously adjustable absorption edge is suitable for different heat collectors with working temperature from low temperature to middle and high temperature.