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Issue 4, 2013
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Economical hafnium oxygen nitride binary/ternary nanocomposite counter electrode catalysts for high-efficiency dye-sensitized solar cells

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Abstract

Hafnium oxygen nitride binary/ternary nanocomposites were prepared by combining Hf7O8N4, HfO2, and amorphous carbon through a simple chemical synthesis. The obtained HfO2 (Hf-R0-U), HfO2–C (Hf-R5-B), and Hf7O8N4–HfO2–C (Hf-R12-T) were characterized by XRD, SEM, FESEM, and electrochemical measurements. Dye-sensitized solar cells (DSCs) with binary Hf-R5-B and ternary Hf-R12-T composites as counter electrode (CE) showed superior electrocatalytic activity for I3 reduction and high power conversion efficiencies (PCE) of 6.71% and 7.85%, respectively, matching the performance of DSCs with Pt CE (7.19%). The design strategy demonstrated is promising for fabricating highly efficient and low-cost composite CE catalysts for DSCs.

Graphical abstract: Economical hafnium oxygen nitride binary/ternary nanocomposite counter electrode catalysts for high-efficiency dye-sensitized solar cells

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Publication details

The article was received on 12 Oct 2012, accepted on 12 Nov 2012 and first published on 13 Nov 2012


Article type: Paper
DOI: 10.1039/C2TA00680D
Citation: J. Mater. Chem. A, 2013,1, 1341-1348
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    Economical hafnium oxygen nitride binary/ternary nanocomposite counter electrode catalysts for high-efficiency dye-sensitized solar cells

    S. Yun, H. Zhou, L. Wang, H. Zhang and T. Ma, J. Mater. Chem. A, 2013, 1, 1341
    DOI: 10.1039/C2TA00680D

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