Improvement of interfacial contact for efficient PCBM/MAPbI3 planar heterojunction solar cells with a binary antisolvent mixture treatment. (6th September 2021)

• Record Type: Journal Article
• Authors: Chandel, Anjali; Wu, Jia-Ren; Thakur, Diksha; Kassou, Said; Chiang, Shou-En; Cheng, Kai-Jen; Li, Chung-Yu; Yen, Yung-Sheng; Chen, Sheng-Hui; Chang, Sheng Hsiung
• Is Part Of: Nanotechnology. Volume 32:Number 48(2021)
• Publication Date: 2021-09-06
• Subjects: binary antisolvent mixture -- MAPbI3 solar cells -- PCBM/MAPbI3 interface -- toluene:dichloromethane -- chlorobenzene:dichloromethane; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ac1ec0
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Atomic-force microscopic images, x-ray diffraction patterns, Urbach energies and photoluminescence quenching experiments show that the interfacial contact quality between the hydrophobic [6, 6]-phenyl-C61 -buttric acid methyl ester (PCBM) thin film and hydrophilic CH3 NH3 PbI3 (MAPbI3 ) thin film can be effectively improved by using a binary antisolvent mixture (toluene:dichloromethane or chlorobenzene:dichloromethane) in the anti-solvent mixture-mediated nucleation process, which increases the averaged power conversion efficiency of the resultant PEDOT:PSS (P3CT-Na) thin film based MAPbI3 solar cells from 13.18% (18.52%) to 13.80% (19.55%). Beside, the use of 10% dichloromethane (DCM) in the binary antisolvent mixture results in a nano-textured MAPbI3 thin film with multicrystalline micrometer-sized grains and thereby increasing the short-circuit current density and fill factor (FF) of the resultant solar cells. It is noted that a remarkable FF of 80.33% is achieved, which can be used to explain the stable photovoltaic performance without additional encapsulations.