Performance analysis of dye-sensitized solar cells with various MgO-ZnO mixed photoanodes prepared by wet powder mixing and grinding. Issue 21 (15th December 2021)

• Record Type: Journal Article
• Authors: Chen, Huai-Yi; Koo, Horng-Show; Hsu, Yung-Lin; Lu, Chun-Hung
• Is Part Of: Journal of modern optics. Volume 68:Issue 21(2021)
• Page Start: 1240
• Page End: 1250
• Publication Date: 2021-12-15
• Subjects: Zinc oxide (ZnO) -- magnesium oxide (MgO) -- nanoparticles -- wet powder mixing and grinding -- photoanode -- dye-sensitized solar cell (DSSC); Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2021.1987538
• Languages: English
• ISSNs: 0950-0340

Abstract

Abstract : In this study, photoanodes of a dye-sensitized solar cell (DSSC) were made by adding various weight percentages (0∼9 wt%) of MgO nanopowder to ZnO nanopowder with a different wet powder mixing and grinding method. For the MgO/ZnO DSSCs, the addition of 1 wt% MgO can achieve maximum short-circuit current density (4.00 mA/cm 2 ) and maximum photovoltaic conversion efficiency (1.03%), which was 39% and 27% better than those of the reference ZnO DSSCs, respectively. When a small amount of MgO was added, the electron transport rate or the efficiency of electron injection into photoanodes was improved. However, when a large amount of MgO was added, the number of carriers generated by light was lowered, which led to performance degradation in DSSCs. Preparing photoanodes by adding a small amount of MgO to ZnO can thus effectively improve the photovoltaic performance of ZnO DSSCs.