Enriched visible light absorption by Au-embedded Sm3+ doped TiO2 compact photoanode for enhanced dye-sensitized solar cell performance

Asthana, Saket and Raavi, Sai Santosh Kumar (2023) Enriched visible light absorption by Au-embedded Sm3+ doped TiO2 compact photoanode for enhanced dye-sensitized solar cell performance. Physica B: Condensed Matter, 652. p. 414621. ISSN 0921-4526

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Abstract

The cooperative effect of Samarium (Sm3+)-doped TiO2 and gold nanoparticles (Au NPs) is investigated in this work to explore its potential to boost visible light absorption in dye-sensitized solar cells (DSSC). As Sm3+ exhibits PL emissions at 583 nm, 612.2 nm, 663.6 nm, and 726.3 nm, there is an overlap with the absorption region of the N719 dye and these PL emission wavelengths resulting in a rise in photocurrent density and PCE owing better UV light harvesting. Sm3+ absorption and emissions were boosted by LSPR (Localized surface plasmon resonance) of Au NPs. As a result, the Au NPs embedded Sm-doped TiO2 photoanode-based DSSC capture more visible light. Sm (0.3)-TiO2 based DSSC reports the highest PCE (η:7.2%) among a series of Sm (0.2%, 0.3%, 0.4%, and 0.5% mol) TiO2 concentrations. Further, with the addition of Au NPs into the Sm3+ -doped TiO2, the PCE is enlarged into (η: 8.33%), which is more than 60% higher than TiO2 photoanode-based DSSC (η: 5.58%).

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IITH Creators:

IITH Creators	ORCiD
Asthana, Saket	http://orcid.org/0000-0002-6420-3304
Raavi, Sai Santosh Kumar	http://orcid.org/0000-0002-2496-9233

Item Type:

Article

Uncontrolled Keywords:

Au PNs; Down-conversion; DSSC; LSPR; Sm-doped TiO2; Visible light absorption; Titanium dioxide; Au PN; Co-operative effects; Downconversion; Dye- sensitized solar cells; Localized surface plasmon resonance; Photo-anodes; PL emission; Sm-doped TiO2; Solar cell performance; Visible light absorption; Dye-sensitized solar cells; Gold nanoparticles; Light absorption; Photocatalytic activity; Samarium compounds; Surface plasmon resonance; TiO2 nanoparticles

Subjects:

Physics
Physics > Sound, light and Heat

Divisions:

Department of Physics

Depositing User:

Mr Nigam Prasad Bisoyi

Date Deposited:

27 Aug 2023 12:48

Last Modified:

27 Aug 2023 12:48

URI:

http://raiithold.iith.ac.in/id/eprint/11650