Pu M.-Y.Chen J.Z.JIAN-ZHANG CHEN2019-09-262019-09-2620120167577Xhttps://scholars.lib.ntu.edu.tw/handle/123456789/425243This study reports the improved performance of dye-sensitized solar cells (DSSCs) with TiO2 photoanodes textured by a KrF excimer laser. The excimer laser was employed to create texture for the photoanodes after sintering from TiO2 pastes at 510 ¢XC. The results revealed that the efficiency increased by 24% (from 4.49% to 5.59%) for cells with photoanodes annealed with 11,200 shots of 80 mJ/cm2 laser irradiation. The porous TiO2 photoanodes became less transparent after the laser treatment, indicating an increase in light trapping due to a rougher texture. A notable enhancement of light absorption for wavelengths greater than 550 nm was achieved. The open circuit voltage (Voc) and fill factor (FF) were also improved. The surface re-melting and solidification process may change the series and shunt resistances and reduce the surface recombination centers, leading to the increases of Voc and FF. ? 2011 Elsevier B.V.Laser processingPorous materialsSolar energy materials[SDGs]SDG7journal article10.1016/j.matlet.2011.08.0222-s2.0-80052829975WOS:000297660300049https://www2.scopus.com/inward/record.uri?eid=2-s2.0-80052829975&doi=10.1016%2fj.matlet.2011.08.022&partnerID=40&md5=8488f77037bf432bb17a2d2027473122