ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Influence of the donor and conjugation at D–π–A organic sensitizers for dye-sensitized solar cells: a first principle study

Steffi Grace Suresh Elias, Tamilarasu Sivalingam, and Prakasam Madhu

PG & Research Department of Physics, Gonzaga College of Arts and Science for Women, Krishnagiri, India

E-mail: prakasam44@gmail.com

Received: 1 June 2020  Accepted: 11 July 2020

Abstract:

In this study, we designed perylene-based organic dye for D–π–A architecture. First, screening the well electron-rich and electron-deficient donor and π-spacer group for efficient dye sensitizer for DSSCs have been simulated using DFT and TD-DFT methods. The theoretical results have shown that the LUMO and HOMO energy levels of the design dyes can ensure a positive effect on the process of electron injection and dye regeneration. The main factors of short-circuit current density influence the light harvesting efficiency and the electron injection rate. On the other hand, electron dipole moment is controlled by the open circuit photovoltage, which improves higher-efficiency photovoltaic devices. The calculated results of the design dye reveal that dye D3 can be used as a potential sensitizer for DSSCs.

Keywords: Perylene; Dye sensitizer; Density functional theory; Light harvesting efficiency; UV–visible absorption spectra

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01285-0

Chemical Papers 75 (1) 197–203 (2021)