title: Nearly zero reflectance of nano-pyramids and dual-antireflection coating structure for monocrystalline silicon solar cells.
abstract: The effect of two-step surface treatment on monocrystalline silicon solar cells was investigated. We changed the nanostructure on pyramidal surfaces by wet nano-texturing so that less light is reflected. The two-step nano-texturing process reduces the average reflectance to about 4% in the 300-1100 nm wavelength region. The use of an antireflection coating resulted in an effective reflectance of 1%. We found that the reflectance obtained by wet nano-texturing was lower than that obtained by conventional alkaline texturing. Thus, we can expect a further increase in the efficiency of silicon solar cells with two-step nano-texturing by a wet chemical process.
authors.affiliation: Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology, Icheon 467-843, Korea.
authors.forename: Hyo Sik
authors.initials: HS
authors.lastname: Chang
authors.forename: Hyun-Chul
authors.initials: HC
authors.lastname: Jung
mesh_terms: D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D012031:Refractometry; D012542:Scattering, Radiation; D012825:Silicon / Q000737:chemistry*; D012993:Solar Energy
chemical_list: D012825:Silicon