TY - JOUR
T1 - Application of polyoxometalate-ionic liquids (POM-ILs) in dye-sensitized solar cells (DSSCs)
AU - Cruz, Hugo
AU - Pinto, Ana Lúcia
AU - Lima, João Carlos
AU - Branco, Luís C.
AU - Gago, Sandra
N1 - info:eu-repo/grantAgreement/FCT/5876/147218/PT#
info:eu-repo/grantAgreement/FCT/3599-PPCDT/127013/PT#
project “SunStorage- Harvesting and storage of solar energy”, with reference POCI-01-0145-FEDER-016387, and by national funds (PTDC/ QEQ-QFI/1971/2014), through FCT - Fundação para a Ciência e a Tecnologia.
H. Cruz thanks to Fundacão para a Ciência e a Tecnologia, MCTES, for the norma transitória DL 57/2016 Program Contract. L. C. Branco thanks to financial support of FCT/MCTES IF/0041/2013/CP1161/CT00).
Ana Lucia Pinto thanks to FCT/MCTES for the grant PD/BD/135087/2017
PY - 2020/6/1
Y1 - 2020/6/1
N2 - Polyoxometalates (POMs) as anionic metal oxides are promising candidates for application in dye-sensitized solar cells (DSSCs) due to their peculiar properties including a reversible and multi-electron redox behavior. In this work, four polyoxometalate as ionic liquids (POM-ILs) based on the combination between phosphomolybdate anion (PMo12O40 3−) and organic cations such as [BMIM]+, [BPy]+, [HDPy]+ and [P6,6,6,14]+ were prepared and characterized. A detailed chemical structural elucidation by elemental analysis, ATR-FTIR, 1H and 31P NMR spectroscopies have been performed. These POM-ILs were tested as photosensitizers by adsorption to the photoanode (TiO2 film) for different times (15 min to 17 h). The DSSCs performance can be highly improved comparing the commercially available compound and POM-ILs. The electrodeposition process is an excellent alternative to adsorption in order to improve the overall efficiencies. In general, [BPy]3[PMo12O40] and [P6,6,6,14]3[PMo12O40] are the most promissory compounds for DSSC approaches.
AB - Polyoxometalates (POMs) as anionic metal oxides are promising candidates for application in dye-sensitized solar cells (DSSCs) due to their peculiar properties including a reversible and multi-electron redox behavior. In this work, four polyoxometalate as ionic liquids (POM-ILs) based on the combination between phosphomolybdate anion (PMo12O40 3−) and organic cations such as [BMIM]+, [BPy]+, [HDPy]+ and [P6,6,6,14]+ were prepared and characterized. A detailed chemical structural elucidation by elemental analysis, ATR-FTIR, 1H and 31P NMR spectroscopies have been performed. These POM-ILs were tested as photosensitizers by adsorption to the photoanode (TiO2 film) for different times (15 min to 17 h). The DSSCs performance can be highly improved comparing the commercially available compound and POM-ILs. The electrodeposition process is an excellent alternative to adsorption in order to improve the overall efficiencies. In general, [BPy]3[PMo12O40] and [P6,6,6,14]3[PMo12O40] are the most promissory compounds for DSSC approaches.
KW - Dye-sensitized solar cells
KW - Electrodeposition
KW - Energy conversion efficiency
KW - Ionic liquids
KW - Materiais 2019
KW - Polyoxometalate
UR - http://www.scopus.com/inward/record.url?scp=85078567280&partnerID=8YFLogxK
U2 - 10.1016/j.mlblux.2019.100033
DO - 10.1016/j.mlblux.2019.100033
M3 - Article
AN - SCOPUS:85078567280
SN - 2590-1508
VL - 6
JO - Materials Letters: X
JF - Materials Letters: X
M1 - 100033
ER -