Antiradar reflectivity crystalline silicon solar cells

• Main Authors: FANG JIEBIN, CHEN GANG, SHI QIANG, HUANG YUPING, HE DANENG, QIN CHONGDE
• Format: Patent
• Language: English
• Published: 20.01.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The utility model discloses an antiradar reflectivity crystalline silicon solar cells, including ag back electrode, al back of the body field, P type silicon, N+ layer and ag positive electrode, al back of the body field, P type silicon and N+ layer stack gradually the formula setting, be equipped with first anti - film and the second of subtracting between ag positive electrode and the N+ layer and subtract anti - film, firstly subtract anti - film and be equipped with the nanometer light tripping structure who forms by a plurality of nano -pore, firstly subtract anti - film and cover at N+ layer upper surface, the second subtract anti - film cover first subtract anti - film upper surface and nano -pore in, the second subtracts anti - film and covers and subtract anti - film upper surface and form the compound anti - film that subtracts first, the ag positive electrode pierces through that first subtract anti - film and the second subtracts anti - film and N+ layer ohmic contact. Compared with the prior art, the utility model has the advantages of the passivation effect that subtracts anti - membrane has been guaranteed when having reduced carrier recombination rate, the reflection reducing optical coating rate of silicon face, the conversion efficiency of battery can be improved greatly.