Optoelectronic and current-voltage studies for novel coumarin dyes

Basavarajappaa, K V and Nayaka, Arthoba and Purushothama, H T and Vinaya, M M and Antony, Albin and Poornesh, P (2021) Optoelectronic and current-voltage studies for novel coumarin dyes. International Journal of Environmental Analytical Chemistry, 101 (1).

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Abstract

Coumarin derivatives are used in a wide range of applications, such as optoelectronics, photovoltaics and dye lasers. Therefore they have attracted significant research interest. In this regard, novel coumarin dye molecules were synthesised and characterised by spectroscopic techniques. The synthesised dyes were studied for optical (linear and nonlinear), frontier molecular orbital analysis (using cyclic voltammetry and DFT calculations) and the currentvoltage (I-V) studies for photosensitization behaviour on TiO2 nanoparticles. The TiO2 nanoparticles were synthesised by the solgel method and characterised by XRD, EDAX and SEM analysis. The results showed that the dye molecules possess good lightabsorbing capability with a high molar absorption coefficient and also exhibited the good nonlinear optical (NLO) response. Moreover, the I-V characteristics suggest the efficacy of synthesised dyes for photovoltaic applications.

Item Type: Article
Uncontrolled Keywords: Coumarins; TiO2; band gap; NLO; I–V characteristics
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 29 Oct 2021 06:14
Last Modified: 29 Oct 2021 06:18
URI: http://eprints.manipal.edu/id/eprint/157568

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