TY - JOUR
T1 - Influence of Cu vacancy on knit coir mat structured CuS as counter electrode for quantum dot sensitized solar cells
AU - Dennyson Savariraj, A.
AU - Viswanathan, Kodakkal Kannan
AU - Prabakar, Kandasamy
N1 - Publisher Copyright:
© 2014 American Chemical Society.
PY - 2014/11/26
Y1 - 2014/11/26
N2 - Knit-coir-mat-like structured CuS thin films prepared by chemical bath deposition with different time duration were used as counter electrode in qunatum dot sensitized solar cells. The film deposited at 4 h exhibited better electrochemical and photovoltaic performance with JSC, VOC, and FF values of 14.584 mA cm-2, 0.566 V, and 54.57% and efficiency of 4.53%. From the UV-vis absorption spectra, it is observed that CuS thin film exhibits free carrier intraband absorption in the longer wavelengh region. The enhanced performance of CuS counter electrodes is due to Cu vacancies with increased S composition, and the quasi-Fermi energy level in semiconductors with respect to electrolyte redox potential is one of the causes that affects the electrocatalytic activity of counter electrodes. (Chemical Equation Presented).
AB - Knit-coir-mat-like structured CuS thin films prepared by chemical bath deposition with different time duration were used as counter electrode in qunatum dot sensitized solar cells. The film deposited at 4 h exhibited better electrochemical and photovoltaic performance with JSC, VOC, and FF values of 14.584 mA cm-2, 0.566 V, and 54.57% and efficiency of 4.53%. From the UV-vis absorption spectra, it is observed that CuS thin film exhibits free carrier intraband absorption in the longer wavelengh region. The enhanced performance of CuS counter electrodes is due to Cu vacancies with increased S composition, and the quasi-Fermi energy level in semiconductors with respect to electrolyte redox potential is one of the causes that affects the electrocatalytic activity of counter electrodes. (Chemical Equation Presented).
KW - CuS counter electrodes
KW - Impedance spectroscopy
KW - Knit coir mat
KW - Quantum dot solar cells
UR - http://www.scopus.com/inward/record.url?scp=84914668012&partnerID=8YFLogxK
U2 - 10.1021/am504615x
DO - 10.1021/am504615x
M3 - Article
AN - SCOPUS:84914668012
SN - 1944-8244
VL - 6
SP - 19702
EP - 19709
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 22
ER -