We employed ultra-violet (UV) light treatment on the TiO2 layer prior to coating the perovskite layer to improve the solar conversion efficiency of perovskite solar cells (PSCs). A laboratory-made UV treatment system was equipped with various UV light sources (8 W power; maximum wavelengths of 254, 302, and 365 nm). The UV light treatment improved the power conversion efficiency (PCE) while coating the uniformity layer and removing impurities from the surface of cells. After the PSCs were exposed to UV light, their PCE developed approximately 10% efficiency; PBI2 decreased without changing the structure.
Dye-sensitized solar cells based on dinuclear hydrido-carbonyl rhenium complexes have been developed, achieving an overall solar conversion efficiency of 1.0%.
Two β D-π-A porphyrin dyes have been synthesized and applied as photosensitizers for dye-sensitized solar cells. A maximum solar conversion efficiency of 2.2% has been achieved for dye 2-(N, N-diphenylaminophenylacetynyl)-12(13)-(4-carboxylphenylacetynyl)-5, 10, 15, 20-tetra (4-tert butylphenyl)porphyrin zinc.
Nanoporous and macroporous structures were prepared by using self-assembled monolayer (SAM) onto ZnO thin films in order to investigate the efficiency of dye-sensitized solar cells (DSSCs) produced using these films. Using SAM on ZnO thin films, it is obtained successfully assembled large-area, highly ordered porous ZnO thin films. Varying nanoporous radius is observed between 20 and 50 nm sizes, while it is 500–800 nm for macroporous radius. The solar conversion efficiency of 2.75% and IPCE of 29% was obtained using ZnO nanoporous/N719 dye/I−/I3-electrolyte, while macroporous ZnO given solar conversion efficiency of 2.22% and IPCE of 18%.
Effect of UV-Light Treatment on Efficiency of Perovskite Solar Cells (PSCs)
