Scientific Results

Transparent front contact optimization in dye sensitized solar cells: use of cadmium stannate and titanium oxide by sputtering

Year: 2014

Authors: Braga A., Baratto C., Bontempi E., Colombi P., Sberveglieri G.

Autors Affiliation: CNR-IDASC SENSOR Lab and Department of Chemistry and Physics, Brescia University, Via Valotti 9, 25131 Brescia, Italy;
INSTM and Chemistry for Technologies Laboratory, University of Brescia, Via Branze 28, 25133 Brescia, Italy; Centro Coating C.S.M.T. Gestione S.c.a.r.l., Via Branze, 45 25123 Brescia, Italy

Abstract: A reliable transparent front contact of cadmium stannate (CTO) and titanium oxide (TiO2) entirely deposited by magnetron sputtering has been studied and applied to build standard dye-sensitized solar cell. CTO gives very high average optical transmittance (T-avg >= 90%) along with competitive sheet resistance (R-sheet <= 15 Omega/sq), while a very thin layer of TiO2 (thickness < 5 nm) acts as buffer layer to prevent charge recombination. The matched materials allow achievement of good performances of the cells, in terms of short circuit current and power conversion efficiency. UV-visible spectrophotometry, glancing incident X-rays diffraction and X-rays reflectivity techniques were used to characterize thin films before cell realization; sealed solar cells were tested under simulated solar irradiance at 1 Sun to determine functional properties. (C) 2013 Elsevier B.V. All rights reserved. Journal/Review: THIN SOLID FILMS

Volume: 555      Pages from: 18  to: 20

More Information: This work was supported by OIKOS s.r.l. (Brescia, Italy).
KeyWords: Cadmium stannate (CTO); Titanium oxide (TiO2); Transparent conducting oxides (TCOs); Dye-sensitized solar cells (DSCs); Buffer Layer (BL)
DOI: 10.1016/j.tsf.2013.08.008

Citations: 7
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2022-01-16
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here

This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more