Jump to main content
Jump to site search

Issue 5, 2011
Previous Article Next Article

Quantum dot based anode and cathode for high voltage tandem photo -electrochemical solar cell

Author affiliations

Abstract

A thin layer of CdSe quantum dots (QDs) deposited on a conductive glass was used as a photo-anode in photo-electrochemical solar cells yielding a photovoltage of 675 mV and 2 mA cm−2 short circuit photocurrent. The response of the QD based photoactive electrodes correlated with the absorption spectra of the QDs which is easily tuned by size modification. Similar geometry based on acid treated CdS quantum dots, provided a photo-cathode with complementary photovoltage. A tandem photo-electrochemical cell consisting of the two photoactive electrodes exhibits Voc of 816 mV. The tandem configuration enables achieving the highest photovoltage reported to date for QD based photo-electrochemical cells. However, current matching still requires optimization of the spectral response and charge collection efficiencies of the two photoactive electrodes. The results demonstrate a new approach for the beneficial utilization of QDs in photo-electrochemical cells towards efficient, low cost photovoltaics.

Graphical abstract: Quantum dot based anode and cathode for high voltage tandem photo -electrochemical solar cell

Back to tab navigation

Publication details

The article was received on 08 Feb 2011, accepted on 15 Mar 2011 and first published on 12 Apr 2011


Article type: Paper
DOI: 10.1039/C1EE01145F
Citation: Energy Environ. Sci., 2011,4, 1874-1878
  •   Request permissions

    Quantum dot based anode and cathode for high voltage tandem photo -electrochemical solar cell

    M. Shalom, I. Hod, Z. Tachan, S. Buhbut, S. Tirosh and A. Zaban, Energy Environ. Sci., 2011, 4, 1874
    DOI: 10.1039/C1EE01145F

Search articles by author

Spotlight

Advertisements