Open Access Article
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Expression of concern: Optimization of a compact layer of TiO2via atomic-layer deposition for high-performance perovskite solar cells
Ahmed Esmail
Shalan
a,
Sudhakar
Narra
b,
Tomoya
Oshikiri
a,
Kosei
Ueno
a,
Xu
Shi
a,
Hui-Ping
Wu
b,
Mahmoud M.
Elshanawany
b,
Eric
Wei-Guang Diau
*b and
Hiroaki
Misawa
*ab
aResearch Institute for Electronic Science, Hokkaido University, N21, W10, Kita-ku, 001-0021, Sapporo, Japan. E-mail: misawa@es.hokudai.ac.jp
bDepartment of Applied Chemistry, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan. E-mail: diau@mail.nctu.edu.tw
First published on 16th November 2023
Abstract
Expression of concern for ‘Optimization of a compact layer of TiO2via atomic-layer deposition for high-performance perovskite solar cells’ by Ahmed Esmail Shalan et al., Sustainable Energy Fuels, 2017, 1, 1533–1540, https://doi.org/10.1039/C7SE00220C.
The Royal Society of Chemistry is publishing this expression of concern in order to alert readers that concerns have been raised regarding the reliability of the XRD data in Fig. S4a and the XPS data in Fig. S5d and e. An investigation is underway, and an Expression of Concern will continue to be associated with the article until a final outcome is reached.
Sam Keltie
14th November 2023
Publisher, Sustainable Energy & Fuels.
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