Boosting the efficiency of Ruddlesden–Popper tin perovskite solar cells through ethylenediamine dihydroiodide-mediated phase modulation

Jorim Okoth Obila; Chunging Li; Masatoshi Yanagida; Yasuhiro Shirai; Yuko Takeoka

doi:10.1039/D5CC05230K

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Boosting the efficiency of Ruddlesden–Popper tin perovskite solar cells through ethylenediamine dihydroiodide-mediated phase modulation

Jorim Okoth Obila,^a Chunging Li,

^a Masatoshi Yanagida,

^b Yasuhiro Shirai

^b and Yuko Takeoka

*^a

Author affiliations

* Corresponding authors

^a Faculty of Science and Engineering, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, Japan
E-mail: y-tabuch@sophia.ac.jp

^b Photovoltaic Materials Group, Centre for GREEN Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, Japan

Abstract

Quasi-two-dimensional Ruddlesden–Popper tin perovskite solar cells (q-2D SnPSCs) show low power conversion efficiency (PCE) due to the formation of randomly oriented multiple lower-dimensional perovskite phases. Ethylenediamine dihydroiodide tuned the crystal orientation and modulated the formation of lower n members in RP tin perovskite films, resulting in q-2D SnPSCs with a PCE of 8.29%.

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Article information

DOI: https://doi.org/10.1039/D5CC05230K
Article type: Communication
Submitted: 10 Sep 2025
Accepted: 06 Oct 2025
First published: 14 Oct 2025
This article is Open Access

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Chem. Commun., 2025,61, 17428-17431

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Boosting the efficiency of Ruddlesden–Popper tin perovskite solar cells through ethylenediamine dihydroiodide-mediated phase modulation

J. O. Obila, C. Li, M. Yanagida, Y. Shirai and Y. Takeoka, Chem. Commun., 2025, 61, 17428 DOI: 10.1039/D5CC05230K

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Chemical Communications

Boosting the efficiency of Ruddlesden–Popper tin perovskite solar cells through ethylenediamine dihydroiodide-mediated phase modulation

Abstract

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Boosting the efficiency of Ruddlesden–Popper tin perovskite solar cells through ethylenediamine dihydroiodide-mediated phase modulation

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