Nanostructured ternary perovskite oxides as photoconversion efficiency enhancers for DSSC. Issue 4 (5th January 2022)

• Record Type: Journal Article
• Authors: Reddy, Nandarapu Purushotham; Santhosh, Rompivalasa; Thogiti, Suresh; Muniramaiah, Reddivari; Joseph, D. Paul; Murali, Banavoth
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 4(2022)
• Page Start: 1403
• Page End: 1413
• Publication Date: 2022-01-05
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc04584a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : The morphology manipulation of nanostructured La-doped BaSnO3 using a facile cost-effective peroxide route, enhanced the overall charge transfer process. Abstract : Ternary perovskite oxides are potential candidates as stand-in electron transport materials to replace the conventional binary TiO2 in dye-sensitized solar cells (DSSCs). Here, we report the synthesis of nanostructured perovskite ternary oxide BaSnO3 (BSO) photo anode doped with lanthanum (LBSO) using a facile peroxide route and demonstrate the alternative efficient electron transport layers for DSSCs. A double surface treatment method with TiCl4 was initially applied to the transparent conducting layer (TCL) to enhance the performance of DSSCs based on La-doped BaSnO3 . The DSSCs containing the pre-treated (TCL/LBSO3) exhibited better power conversion efficiency (PCE) of 4.37%. Furthermore, the DSSC device assembled with pre and post (TCL/LBSO3/TCL) surface treated film exhibited the highest PCE of 5.96%, which is 60% higher than DSSC with undoped, pre and post (TCL/BSO/TCL) surface treated film (3.71%). Hence, pre and post-treated LBSO3 can be considered a promising alternative ETL layer for DSSCs due to its superior charge collection efficiency and reduced recombination rates confirmed by impedance analysis.