Thiophene-Functionalized Coumarin Dye for Efficient Dye-Sensitized Solar Cells:  Electron Lifetime Improved by Coadsorption of Deoxycholic Acid

ABSTRACTWith the application of near-infrared radiation (NIR), TiO2 films for dye-sensitized solar cells (DSCs) on metallic substrates can be sintered in just 12.5 s. The photovoltaic performance of devices made with NIR sintered films match those devices made with conventionally sintered films prepared by heating for 1800 s. Here we characterise the electron transport, electron lifetime and phase-morphological properties of ultrafast NIR sintered films, using impedance spectroscopy, transient photovoltage decay and x-ray diffraction measurements. An important factor in NIR processing of TiO2 films is the peak metal temperature (PMT) and we show that during the 12.5 second heat treatment that a PMT of around 635 °C gives near identical electron transport, electron lifetime and morphological properties, as well comparable photovoltaic performance to a conventionally sintered (500 °C, 30 mins) film. What is perhaps most interesting is that the rapid heating of the TiO2 (to temperatures of up to 785°C) does not lead to a large scale rutile phase transition. As such photovoltaic performance of resultant DSC devices is maintained even though the TiO2 has been at temperatures which traditionally would have reduced cell photocurrents via anatase-to-rutile phase transition.

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Enhancing the performance of dye-sensitized solar cells: doping SnO2photoanodes with Al to simultaneously improve conduction band and electron lifetime

Journal of Materials Chemistry A ◽

10.1039/c4ta05923a ◽

2015 ◽

Vol 3 (6) ◽

pp. 3066-3073 ◽

Cited By ~ 32

Author(s):

Yandong Duan ◽

Jiaxin Zheng ◽

Nianqing Fu ◽

Yanyan Fang ◽

Tongchao Liu ◽

...

Keyword(s):

Solar Cells ◽

Conduction Band ◽

High Performance ◽

Dye Sensitized Solar Cells ◽

Electron Lifetime ◽

Al Doping ◽

Dye Sensitized ◽

Sensitized Solar Cells

Al-doping of SnO2photoanodes can simultaneously improve conduction band and electron lifetime of high-performance dye-sensitized solar cells.

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Enhancement of electron lifetime in dye-sensitized solar cells using anodically grown TiO2 nanotube/nanoparticle composite photoanodes

Microelectronic Engineering ◽

10.1016/j.mee.2013.03.037 ◽

2013 ◽

Vol 111 ◽

pp. 137-142 ◽

Cited By ~ 26

Author(s):

Andrea Lamberti ◽

Adriano Sacco ◽

Stefano Bianco ◽

Marzia Quaglio ◽

Diego Manfredi ◽

...

Keyword(s):

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Tio2 Nanotube ◽

Electron Lifetime ◽

Dye Sensitized ◽

Sensitized Solar Cells

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Polyoxometalate–anatase TiO2 composites are introduced into the photoanode of dye-sensitized solar cells to retard the recombination and increase the electron lifetime

Dalton Transactions ◽

10.1039/c2dt32403b ◽

2013 ◽

Vol 42 (8) ◽

pp. 2691 ◽

Cited By ~ 46

Author(s):

Shi-Ming Wang ◽

Lin Liu ◽

Wei-Lin Chen ◽

En-Bo Wang ◽

Zhong-Min Su

Keyword(s):

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Anatase Tio2 ◽

Electron Lifetime ◽

Dye Sensitized ◽

Sensitized Solar Cells

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Carbazole Dyes with Ether Groups for Dye-Sensitized Solar Cells: Effect of Negative Charges in Dye Molecules on Electron Lifetime

Japanese Journal of Applied Physics ◽

10.1143/jjap.51.10ne14 ◽

2012 ◽

Vol 51 ◽

pp. 10NE14 ◽

Cited By ~ 1

Author(s):

Yu Uemura ◽

Shogo Mori ◽

Kohjiro Hara ◽

Nagatoshi Koumura

Keyword(s):

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Electron Lifetime ◽

Dye Molecules ◽

Dye Sensitized ◽

Sensitized Solar Cells

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Ferroelectric polyoxometalate-modified nano semiconductor TiO2 for increasing electron lifetime and inhibiting electron recombination in dye-sensitized solar cells

Inorganic Chemistry Frontiers ◽

10.1039/d0qi00488j ◽

2020 ◽

Vol 7 (17) ◽

pp. 3072-3080 ◽

Cited By ~ 2

Author(s):

Yitong Gu ◽

Ting Wang ◽

Yi-na Dong ◽

He Zhang ◽

Di Wu ◽

...

Keyword(s):

Electron Transfer ◽

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Electron Lifetime ◽

Electron Recombination ◽

Dye Sensitized ◽

Electron Holes ◽

Sensitized Solar Cells

Ferroelectric polyoxometalate Sm is a good electron transfer medium, which can reduce electron-holes recombination and increase electrons lifetime in DSSCs.

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