Single compound in-situ synthesis of core-shell CaF2 nanoparticles based broad band antireflective coatings for solar energy conversion. (15th September 2019)

• Record Type: Journal Article
• Authors: Chandra Sekhar Reddy, K.; Chingakham, Ch.; Gupta, Bikesh; Shiva Prasad, M.; Atchuta, S.R.; Sakthivel, S.
• Is Part Of: Solar energy. Volume 190(2019)
• Page Start: 119
• Page End: 125
• Publication Date: 2019-09-15
• Subjects: Anti-reflective coating -- Core-shell -- Calcium fluoride -- Nanoparticle layer; Solar energy -- Periodicals; Solar engines -- Periodicals; 621.47
• DOI: 10.1016/j.solener.2019.07.083
• Languages: English
• ISSNs: 0038-092X

Abstract

Graphical abstract: Highlights: A Core-Shell CaF2 nanoparticles were synthesized for Broad Band AR coatings. A unique synthesis approach of formation-deformation-reformation was followed. Observed enhancement in %T with aid of Cetrimonium bromide in CaF2 AR layer. The porous CaF2 AR layer exhibited 95% of T in between 400 and 1500 nm. These films may have a practical application like optical and solar energy conversion. Abstract: A unique in-situ synthesis approach of formation-deformation-reformation routes lead to high crystalline core-shell Calcium Fluoride (CaF2 ) nanoparticles. They were tuned by the solvothermal process to achieve superior antireflection property (>95%) in the broadband region (400–1500 nm) after fabricating films by a dip coating method. These nanoparticles capped by cetyltrimethylammonium bromide (CTAB), to increase the porosity in single layer antireflective (AR) film to reduce the refractive index. This efficient antireflection layer with glass implemented on the c-Si solar cell to measure the efficiency and found out to be an improved performance (>5.7% net enhancement) compared to uncoated glass. In addition, the AR coatings exhibited a good mechanical strength which gives us the direction of future development for practical applications like highly transparent window coatings, optical and solar energy conversion applications.