TY - JOUR
T1 - High performance MoSe2/Mo counter electrodes based-dye-sensitized solar cells
AU - Hussain, Sajjad
AU - Patil, Supriya A.
AU - Vikraman, Dhanasekaran
AU - Liu, Hailiang
AU - Kim, Hak Sung
AU - Jung, Jongwan
N1 - Publisher Copyright:
© 2017 The Electrochemical Society. All rights reserved.
PY - 2017
Y1 - 2017
N2 - In the present study, multilayer MoSe2/Mo nanostructures fabricated by surface selenization of Mo-coated glass substrates using magnetron sputtering, was proposed as a counter electrode (CE) catalyst in dye-sensitized solar cells (DSSCs) to speed up the reduction of triiodide I3- to iodide I-. The extensive cyclic voltammograms (CV) and Tafel curve analysis indicated that the current density of the optimized MoSe2/Mo CE was higher than Pt CEs due to the fast reduction species. Furthermore, the peak current densities of the MoSe2/Mo CE showed little degradation after consecutive 100 CV cycles, suggesting high electrochemical stability of the MoSe2/Mo CE. In addition, MoSe2/Mo CE exhibited lower charge-transfer resistance than Pt CEs. Finally, the DSSC assembled with the MoSe2/Mo CE showed a high power conversion efficiency of 9.57% under illumination of 100 mW · cm-2 (DSSC with Pt CE: 9.15%).
AB - In the present study, multilayer MoSe2/Mo nanostructures fabricated by surface selenization of Mo-coated glass substrates using magnetron sputtering, was proposed as a counter electrode (CE) catalyst in dye-sensitized solar cells (DSSCs) to speed up the reduction of triiodide I3- to iodide I-. The extensive cyclic voltammograms (CV) and Tafel curve analysis indicated that the current density of the optimized MoSe2/Mo CE was higher than Pt CEs due to the fast reduction species. Furthermore, the peak current densities of the MoSe2/Mo CE showed little degradation after consecutive 100 CV cycles, suggesting high electrochemical stability of the MoSe2/Mo CE. In addition, MoSe2/Mo CE exhibited lower charge-transfer resistance than Pt CEs. Finally, the DSSC assembled with the MoSe2/Mo CE showed a high power conversion efficiency of 9.57% under illumination of 100 mW · cm-2 (DSSC with Pt CE: 9.15%).
UR - http://www.scopus.com/inward/record.url?scp=85020223035&partnerID=8YFLogxK
U2 - 10.1149/2.1291702jes
DO - 10.1149/2.1291702jes
M3 - Article
AN - SCOPUS:85020223035
SN - 0013-4651
VL - 164
SP - E11-E16
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 2
ER -