Under-light conversion layer for silicon solar cell and manufacturing method of under-light conversion layer

• Main Authors: Guan Cong, Jiang Yi, Li Suwen, Yue Jinying
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2016
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DYES; 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; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; 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 invention relates to an under-light conversion layer for a silicon solar cell and a manufacturing method of the under-light conversion layer. Firstly, a rare earth organic-inorganic hybrid near-infrared quantum cutting nano material is prepared and is evenly dispersed in a transparent polymer, and the under-light conversion layer for a silicon solar cell is prepared by means of a spin-coating method or a dip-coating method. The rare earth organic-inorganic hybrid near-infrared quantum cutting nano material in the conversion layer has a large light absorption molar coefficient and a wide absorption band, comprises an inorganic matrix which protects cations at the luminescence center from luminescence quenching of a non-radiative passivating source, and is compatible with high-molecular polymers. The rare earth organic-inorganic hybrid near-infrared quantum cutting nano material can effectively absorb short wavelength photons with poor cell spectrum response in sun light and emit near-infrared photons with