Hierarchical self-assembled Cu2S nanostructures: Fast and reproducible spray deposition of effective counter electrodes for high efficiency quantum dot solar cells

Year: 2014

Authors: Selopal GS., Concina I., Milan R., Natile MM., Sberveglieri G., Vomiero A.

Autors Affiliation: Univ Brescia, Dept Informat Engn, I-25133 Brescia, Italy; CNR INO, SENSOR Lab, I-25133 Brescia, Italy; Univ Padua, CNR IENI, I-35131 Padua, Italy; Univ Padua, Dept Chem Sci, I-35131 Padua, Italy.

Abstract: The availability of a well-established procedure for fabricating reliable and reproducible counter electrodes for quantum dot sensitized solar cells is currently an issue, limiting both the functional performances of these devices and the possibility to compare results obtained in different laboratories. We present here a simple, cheap and fast method for Cu2S counter electrodes fabrication based on spray pyrolysis deposition. Application of prepared counter electrodes to SILAR-sensitized quantum dot solar cells results in high performance devices (photoconversion efficiencies as high as 3.75% and impressive incident photon-to-current-efficient higher than 90%) as well in excellent reproducibility.

Journal/Review: NANO ENERGY

Volume: 6      Pages from: 200  to: 210

More Information: GSS likes to acknowledge OIKOS company; IC and AV thank the National Research Council under the Project “Tecnologie e Materiali per l’utilizzo efficiente dell’energia solare” (Regione Lombardia) and the European Union under the Contract no. 295216 , WIROX, Marie Curie Actions—International Research Staff Exchange Scheme (IRSES) for partial funding; RM thanks Regione Lombardia “Bando Dote Ricercatore”, AV acknowledges the European Union for partial funding under the Contract no. 299490 , F-Light, Marie Curie International Outgoing Fellowship. MMN acknowledges Italian MIUR under the projects FIRB RBPR05JH2P “Rete ItalNanoNet” and FIRB RBAP114AMK “RINAME” for partial funding.
KeyWords: Quantum dot sensitized solar cells; Counter electrode; Spray deposition; SILAR
DOI: 10.1016/j.nanoen.2014.04.003

Citations: 45
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