Role of defect density on the electronic transport and current-voltage characteristics of the hole transporter free perovskite solar cell. (2020)

• Record Type: Journal Article
• Authors: Raval, Dhyey; Jani, Margi; Tripathi, Brijesh; Verma, Deepak; Kumar, Manoj
• Is Part Of: Materials today. Volume 28:Part 1(2020)
• Page Start: 223
• Page End: 229
• Publication Date: 2020
• Subjects: Perovskite solar cell -- SCAPS-1D -- Simulation -- Defect density -- Current-voltage characteristics; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.01.587
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: A titanium dioxide/perovskite heterojunction solar cell has been assemble and tested under the forward and reverse bias voltage to investigate the role of ionic movement and its effect on the electrical parameters. A greater extent of leakage current is obtained in the TiO2 /perovskite. It results into a hysteresis curve in the current-voltage characteristics, which has a detrimental consequence on the power conversion efficiency (PCE) of the solar cell. A higher leakage current is attributed to the defect states generated due to the ionic movement. SCAPS-1D drift-diffusion model-based simulation software is used to understand the correlation between the electrical performance of the solar cell and the density of electronic defect states. A low short circuit current of assembled solar cell has been attributed to a high defect density of 1 × 10 19 /cm 3 as explored through SCAPS 1D simulation.