Please use this identifier to cite or link to this item: http://ir.lib.seu.ac.lk/handle/123456789/5609
Title: The photovoltaic performance of CdS quantum dots sensitized solar cell using Ag/TiO2 photoanode
Authors: W.I., Sandamali
Senadeera, G.K.R.
issanayake, M.A.K.L.
Jaseetharan, T.
Perera, V.P.S.
Rajendra, J C.N.
Karthikeyan, N.
Wijenayaka, L.A.
Keywords: CdS
quantum dots
sensitization
solar cells
Issue Date: 17-Feb-2021
Publisher: University of Ruhuna, Matara, Sri Lanka
Citation: Proceedings of 8 Ruhuna International Science & Technology Conference, P:62
Abstract: Quantum dot sensitized solar cells (QDSSCs) with titanium dioxide (TiO2) photoanode are attracting considerable attention among the third-generation photovoltaics due to their low cost and simple fabrication techniques involve. It is proved that strong light absorption in the visible region due to the surface plasmon resonance (SPR), of metal nanoparticles (NP) can enhance the photoresponses of these QDSSCs by acting as an agent for light trapping and providing electron traps for facilitating charge separation. In this study, the effect of in-cooperation of Ag nanoparticles in CdS quantum dot-sensitized TiO, photoanodes towards the efficiency enhancement in QDSSCs was studied. CdS deposition on porous TiO? films was carried out by successive ionic layer adsorption and reaction method. Silver NPs, synthesized by a facile one-pot chemical reduction method, were incorporated with TiO» photoanode. QDSSCs with FTO/TiO2-CdS/Pt/FTO configuration were fabricated with polysulfide liquid electrolyte. QDSSCs fabricated with pristine TiO. photoanode exhibited an overall power conversion efficiency of 1.09%, whereas solar cells made with 0.3 w/v% Ag nanoparticle in- cooperated photo anode exhibited 1.37% efficiency under 100 mW cm” (AM 1.5) light illumination. This is an impressive 26% increase in the overall power conversion efficiency which is mainly attributed to the significant enhancement of the light harvesting capacity of the QDSSCs resulted by ultra-broadband SPR of the Ag NPs.
URI: http://ir.lib.seu.ac.lk/handle/123456789/5609
ISSN: 1391-8796
Appears in Collections:Research Articles

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