Jump to main content
Jump to site search

Issue 16, 2015
Previous Article Next Article

Exceptional stability of Mg-implemented PbS quantum dot solar cells realized by galvanic corrosion protection

Author affiliations

Abstract

Lead sulfide (PbS) quantum dots (QDs) have been the focus of photovoltaics research because of their high quantum confinement effect and broad band absorption in the red to near-infrared (NIR) region. However, PbS QDs are easily oxidized under ambient conditions and many research groups are trying to improve their stability in air. In particular, various organic or inorganic materials are used to protect the PbS surface. In this report, we introduce the Mg-implemented PbS colloidal system (Mg–PbS) with enhanced PbS air stability. We obtained a short-circuit current density (JSC) of 11.8 mA cm−2, open-circuit voltage (VOC) of 0.6 V, fill factor (FF) of 62.3%, and power conversion efficiency (η) of 4.4% in a m-TiO2 solid PV cell using Mg–PbS. In addition, their cell properties remained unchanged in a corrosive ethanedithiol solution even after 4 days because of the Mg galvanic corrosion protection of PbS QDs, whereas the PbS QD solar cells were quickly degraded by the corrosion of PbS QDs.

Graphical abstract: Exceptional stability of Mg-implemented PbS quantum dot solar cells realized by galvanic corrosion protection

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Feb 2015, accepted on 09 Mar 2015 and first published on 10 Mar 2015


Article type: Paper
DOI: 10.1039/C5TA01437A
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2015,3, 8433-8437
  •   Request permissions

    Exceptional stability of Mg-implemented PbS quantum dot solar cells realized by galvanic corrosion protection

    J. P. Park, J. H. Heo, S. H. Im and S. Kim, J. Mater. Chem. A, 2015, 3, 8433
    DOI: 10.1039/C5TA01437A

Search articles by author

Spotlight

Advertisements