Enhancing the hole-conductivity of spiro-OMeTAD without oxygen or lithium salts by using spiro(TFSI)2 in perovskite and dye-sensitized solar cells
(2014) In Journal of the American Chemical Society 136(31). p.10996-11001- Abstract
2,2′,7,7′-Tetrakis(N,N-di-p-methoxyphenylamine)-9, 9′-spirobifluorene (spiro-OMeTAD), the prevalent organic hole transport material used in solid-state dye-sensitized solar cells and perovskite-absorber solar cells, relies on an uncontrolled oxidative process to reach appreciable conductivity. This work presents the use of a dicationic salt of spiro-OMeTAD, named spiro(TFSI)2, as a facile means of controllably increasing the conductivity of spiro-OMeTAD up to 10-3 S cm-1 without relying on oxidation in air. Spiro(TFSI)2 enables the first demonstration of solid-state dye-sensitized solar cells fabricated and operated with the complete exclusion of oxygen after deposition of... (More)
2,2′,7,7′-Tetrakis(N,N-di-p-methoxyphenylamine)-9, 9′-spirobifluorene (spiro-OMeTAD), the prevalent organic hole transport material used in solid-state dye-sensitized solar cells and perovskite-absorber solar cells, relies on an uncontrolled oxidative process to reach appreciable conductivity. This work presents the use of a dicationic salt of spiro-OMeTAD, named spiro(TFSI)2, as a facile means of controllably increasing the conductivity of spiro-OMeTAD up to 10-3 S cm-1 without relying on oxidation in air. Spiro(TFSI)2 enables the first demonstration of solid-state dye-sensitized solar cells fabricated and operated with the complete exclusion of oxygen after deposition of the sensitizer with higher and more reproducible device performance. Perovskite-absorber solar cells fabricated with spiro(TFSI)2 show improved operating stability in an inert atmosphere. Gaining control of the conductivity of the HTM in both dye-sensitized and perovskite-absorber solar cells in an inert atmosphere using spiro(TFSI)2 is an important step toward the commercialization of these technologies.
(Less)
- author
- Nguyen, William H. ; Bailie, Colin D. ; Unger, Eva L. LU and McGehee, Michael D.
- publishing date
- 2014-07
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the American Chemical Society
- volume
- 136
- issue
- 31
- pages
- 6 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:84905696542
- ISSN
- 0002-7863
- DOI
- 10.1021/ja504539w
- language
- English
- LU publication?
- no
- id
- b28437e4-bf04-40e8-9d69-c8c001bd2353
- date added to LUP
- 2021-01-23 12:29:36
- date last changed
- 2022-04-26 23:50:51
@article{b28437e4-bf04-40e8-9d69-c8c001bd2353,
abstract = {{<p>2,2′,7,7′-Tetrakis(<i>N</i>,<i>N</i>-di-<i>p</i>-methoxyphenylamine)-9, 9′-spirobifluorene (spiro-OMeTAD), the prevalent organic hole transport material used in solid-state dye-sensitized solar cells and perovskite-absorber solar cells, relies on an uncontrolled oxidative process to reach appreciable conductivity. This work presents the use of a dicationic salt of spiro-OMeTAD, named spiro(TFSI)<sub>2</sub>, as a facile means of controllably increasing the conductivity of spiro-OMeTAD up to 10<sup>-3</sup> S cm<sup>-1</sup> without relying on oxidation in air. Spiro(TFSI)<sub>2</sub> enables the first demonstration of solid-state dye-sensitized solar cells fabricated and operated with the complete exclusion of oxygen after deposition of the sensitizer with higher and more reproducible device performance. Perovskite-absorber solar cells fabricated with spiro(TFSI)<sub>2</sub> show improved operating stability in an inert atmosphere. Gaining control of the conductivity of the HTM in both dye-sensitized and perovskite-absorber solar cells in an inert atmosphere using spiro(TFSI)<sub>2</sub> is an important step toward the commercialization of these technologies.</p>}},
author = {{Nguyen, William H. and Bailie, Colin D. and Unger, Eva L. and McGehee, Michael D.}},
issn = {{0002-7863}},
language = {{eng}},
number = {{31}},
pages = {{10996--11001}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Journal of the American Chemical Society}},
title = {{Enhancing the hole-conductivity of spiro-OMeTAD without oxygen or lithium salts by using spiro(TFSI)<sub>2</sub> in perovskite and dye-sensitized solar cells}},
url = {{http://dx.doi.org/10.1021/ja504539w}},
doi = {{10.1021/ja504539w}},
volume = {{136}},
year = {{2014}},
}