Title :
Efficiency Optimization on Dye-Sensitized Solar Cells With Low-Frequency Noise Analysis
Author :
Lai, Szu Cheng ; Yang, Ming Fei ; Dolmanan, Surani Bin ; Ke, Lin ; Sun, Xiao Wei
Author_Institution :
Inst. of Mater. Res. & Eng., Agency for Sci., Technol. & Res. (A*STAR), Singapore, Singapore
Abstract :
The effects of time durations for ZnO nanorod growth and dye loading on a ZnO-based dye-sensitized solar cell´s efficiency and 1/f low-frequency noise (LFN) spectral were analyzed. Sufficient time durations for ZnO growth and dye loading were required for achieving optimum photoconversion efficiency. Extending these two time parameters beyond the optimal, however, reduced the efficiency due to nanorod defects and dye agglomerations. The mechanisms inducing the change in the efficiency was reflected in the LFN spectral and explained on the basis of Kleinpenning´s noise equation and excessive noises in the presence of structural defects.
Keywords :
nanorods; solar cells; zinc compounds; Kleinpenning noise equation; ZnO; dye agglomerations; dye-sensitized solar cells; low-frequency noise analysis; nanorod defects; optimization; photoconversion efficiency; Anodes; Decision support systems; Equations; Loading; Low-frequency noise; Materials; Mesoporous materials; Noise; Photoconductivity; Photovoltaic cells; Spectral analysis; Sun; Zinc oxide; 1/f noise; Dye loading; ZnO nanorods; dye-sensitized solar cells;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2010.2053490
