TY - JOUR
T1 - Quasi-Solid-State Dye-Sensitized Solar Cells for Efficient and Stable Power Generation under Room Light Conditions
AU - Venkatesan, Shanmuganathan
AU - Liu, I. Ping
AU - Li, Chiao Wei
AU - Tseng-Shan, Chih Mei
AU - Lee, Yuh Lang
N1 - Funding Information:
This work was financially supported by the Hierarchical Green-Energy Materials (Hi-GEM) Research Center, from The Featured Areas Research Center Program within the frame-work of the Higher Education Sprout Project by the Ministry of Education (MOE) and the Ministry of Science and Technology (MOST 107-3017-F-006-003) in Taiwan.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/4/1
Y1 - 2019/4/1
N2 - Highly efficient quasi-solid-state dye-sensitized solar cells (QS-DSSCs) are fabricated using nanocomposite gel electrolytes and applied under room light conditions (200 lx). To obtain high energy conversion efficiency in QS-DSSCs, the important components of the DSSC are systematically optimized based on their performance in liquid-state DSSCs. It shows that the liquid cell using the 3-methoxypropionitrile-based cobalt electrolyte has higher efficiency (18.91%) than the cell using the acetonitrile-based electrolyte (17.82%) under 200 lx illumination due to the higher charge recombination resistance at the photoelectrode/electrolyte interface for the 3-methoxypropionitrile system. Poly(vinylidene fluoride-co-hexafluoropropylene) is utilized as the gelator of the liquid electrolytes to prepare polymer gel electrolytes. Furthermore, to improve the performance of the QS-DSSCs, different metal oxide nanoparticles are introduced as nanofillers of the polymer gel electrolytes. It shows that the zinc oxide nanofillers have a superior performance in increasing the cell efficiency and the energy conversion efficiencies of the QS-DSSCs are higher than those of the corresponding liquid cells. By regulating the concentration of the zinc oxide nanofillers, the efficiency of the 3-methoxypropionitrile based QS-DSSC can achieve a value of 20.11% under 200 lx illumination. This QS-DSSC has a long-term stability at 35 °C.
AB - Highly efficient quasi-solid-state dye-sensitized solar cells (QS-DSSCs) are fabricated using nanocomposite gel electrolytes and applied under room light conditions (200 lx). To obtain high energy conversion efficiency in QS-DSSCs, the important components of the DSSC are systematically optimized based on their performance in liquid-state DSSCs. It shows that the liquid cell using the 3-methoxypropionitrile-based cobalt electrolyte has higher efficiency (18.91%) than the cell using the acetonitrile-based electrolyte (17.82%) under 200 lx illumination due to the higher charge recombination resistance at the photoelectrode/electrolyte interface for the 3-methoxypropionitrile system. Poly(vinylidene fluoride-co-hexafluoropropylene) is utilized as the gelator of the liquid electrolytes to prepare polymer gel electrolytes. Furthermore, to improve the performance of the QS-DSSCs, different metal oxide nanoparticles are introduced as nanofillers of the polymer gel electrolytes. It shows that the zinc oxide nanofillers have a superior performance in increasing the cell efficiency and the energy conversion efficiencies of the QS-DSSCs are higher than those of the corresponding liquid cells. By regulating the concentration of the zinc oxide nanofillers, the efficiency of the 3-methoxypropionitrile based QS-DSSC can achieve a value of 20.11% under 200 lx illumination. This QS-DSSC has a long-term stability at 35 °C.
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U2 - 10.1021/acssuschemeng.9b00754
DO - 10.1021/acssuschemeng.9b00754
M3 - Article
AN - SCOPUS:85063683419
SN - 2168-0485
VL - 7
SP - 7403
EP - 7411
JO - ACS Sustainable Chemistry and Engineering
JF - ACS Sustainable Chemistry and Engineering
IS - 7
ER -