Paste Ageing Spontaneously Tunes TiO2 Nanoparticles into Reproducible Electro-Sprayed Photo-Electrodes
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Authors
Shahiduzzaman, Md.
Chen, Boyang
Akhtaruzzaman, Md.
Wang, LiangLe
Fukuhara, Hiroki
Tomita, Koji
Iwamori, Satoru
Nunzi, Jean-Michel
Taima, Tetsuya
Umezu, Shinjiro
Date
2021-11-04
Type
journal article
Language
en
Keyword
Electrospray technique , Spontaneous microstructure tuning , TiO2 , Aging , Reproducible , N719 dye , Dye-sensitized solar cells , Electrodes , Microstructures , Nanoparticles , Oxides , Particle size
Alternative Title
Abstract
In this study, the spontaneous microstructure tuning of TiO2 was observed by aging the ethanol/water TiO2 paste for up to 20 days at ambient conditions. A dynamic light scattering study reveals that it formed the outstanding reproducible TiO2 microstructure with a ∼200 nm average particle size and stabilizes in 6 to 20 days under an ambient atmosphere. Interestingly, the as- deposited day 15 sample spontaneously changed its crystallinity upon keeping the paste at ambient conditions; meanwhile the day 0 sample showed an amorphous structure. A dense, uniform, and stable TiO2 electrode was cast on a fluorine doped-tin oxide substrate using the electrospray technique. We exploit the spontaneous evolution of the TiO2 nanopowder to revisit the fabrication procedure of the TiO2 photoelectrode for dye-sensitized solar cells (DSSCs). The controlled microstructure TiO2 film was used in DSSCs, which, to the best of our knowledge, achieved the highest power conversion efficiency of 9.65% using N719 dye in sensitizing the TiO2 photoanode.
Description
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, copyright © Copyright © 2021 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
https://doi.org/10.1021/acsami.1c13793
Citation
https://doi.org/10.1021/acsami.1c13793
Md. Shahiduzzaman, Boyang Chen, Md. Akhtaruzzaman, LiangLe Wang, Hiroki Fukuhara, Koji Tomita, Satoru Iwamori, Jean-Michel Nunzi, Tetsuya Taima, and Shinjiro Umezu. Paste Aging Spontaneously Tunes TiO2 Nanoparticles into Reproducible Electrosprayed Photoelectrodes, ACS Applied Materials & Interfaces 2021 13 (45), 53758-53766 DOI: 10.1021/acsami.1c13793
Md. Shahiduzzaman, Boyang Chen, Md. Akhtaruzzaman, LiangLe Wang, Hiroki Fukuhara, Koji Tomita, Satoru Iwamori, Jean-Michel Nunzi, Tetsuya Taima, and Shinjiro Umezu. Paste Aging Spontaneously Tunes TiO2 Nanoparticles into Reproducible Electrosprayed Photoelectrodes, ACS Applied Materials & Interfaces 2021 13 (45), 53758-53766 DOI: 10.1021/acsami.1c13793
Publisher
American Chemical Society