Issue 5, 2011

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

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

Article information

Article type
Paper
Submitted
08 Feb 2011
Accepted
15 Mar 2011
First published
12 Apr 2011

Energy Environ. Sci., 2011,4, 1874-1878

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

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements