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

  Articoli su Riviste JCR/ISI  (anno 2014)

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

Affiliazione Autori:  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

Riassunto:  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.

Rivista/Giornale:  Thin solid films (Print)
Volume n.:  555      Pagine da: 18  a: 20
Ulteriori informazioni:  This work was supported by OIKOS s.r.l. (Brescia, Italy).
DOI: 10.1016/j.tsf.2013.08.008

*Impact Factor della Rivista: (2014) 1.759   *Citazioni: 6
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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