Publication Type:

Journal Article

Source:

Materials Letters, Volume 116, p.345-348 (2014)

URL:

https://www.scopus.com/inward/record.url?eid=2-s2.0-84889663984&partnerID=40&md5=6528adc607ea9ab3c6a2b05a64a09ca0

Keywords:

adsorption, Benzenethiols, Cadmium sulfide, Charge separations, Conversion efficiency, Effective electrons, Efficiency enhancement, Electrochemical impedance spectroscopy, Electrospinning, Nanocomposites, Nanostructured TiO, Nanostructures, Overall conversion efficiency, Quantum dot-sensitized solar cells, Semiconductor quantum dots, Solar cells, Successive ionic layer adsorption and reactions, Surface reactions, Surfaces, Titanium dioxide

Abstract:

<p>Here we fabricated quantum dot-sensitized solar cells (QDSCs) based on electrospinning of unique TiO2 nanostructures and subsequent CdS QDs deposition via successive ionic layer adsorption and reaction (SILAR) followed by dipole treatment (DT). It was found that by treating with 4-methoxy benzenethiol for 24 h, an overall conversion efficiency of 1.17% was achieved under AM1.5 illumination which corresponds to a dramatic 100% enhancement compared with that of untreated cells. The significant photovoltaic improvement was attributed to the upward shifting of CdS QDs energy levels for efficient charge separation and effective electron transport in electrospun TiO 2 nanostructures which is confirmed by electrochemical impedance spectroscopy. © 2013 Elsevier B.V.</p>

Cite this Research Publication

Sa Yang, Nair, A. Sb, and Ramakrishna, Sc, “Conversion efficiency enhancement of CdS quantum dot-sensitized electrospun nanostructured TiO2 solar cells by organic dipole treatment”, Materials Letters, vol. 116, pp. 345-348, 2014.