Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/139196
Title: High-quality Ruddlesden-Popper perovskite films based on in situ formed organic spacer cations
Authors: Qing, Jian
Kuang, Chaoyang
Wang, Heyong
Wang, Yuming
Liu, Xiao-Ke
Bai, Sai
Li, Mingjie
Sum, Tze Chien
Hu, Zhangjun
Zhang, Wenjing
Gao, Feng
Keywords: Science::Physics
Issue Date: 2019
Source: Qing, J., Kuang, C., Wang, H., Wang, Y., Liu, X.-K, Bai, S., . . . Gao, F. (2019). High-quality Ruddlesden-Popper perovskite films based on in situ formed organic spacer cations. Advanced Materials, 31(41), 1904243-. doi:10.1002/adma.201904243
Journal: Advanced Materials
Abstract: Ruddlesden-Popper perovskites (RPPs), consisting of alternating organic spacer layers and inorganic layers, have emerged as a promising alternative to 3D perovskites for both photovoltaic and light-emitting applications. The organic spacer layers provide a wide range of new possibilities to tune the properties and even provide new functionalities for RPPs. However, the preparation of state-of-the-art RPPs requires organic ammonium halides as the starting materials, which need to be ex situ synthesized. A novel approach to prepare high-quality RPP films through in situ formation of organic spacer cations from amines is presented. Compared with control devices fabricated from organic ammonium halides, this new approach results in similar (and even better) device performance for both solar cells and light-emitting diodes. High-quality RPP films are fabricated based on different types of amines, demonstrating the universality of the approach. This approach not only represents a new pathway to fabricate efficient devices based on RPPs, but also provides an effective method to screen new organic spacers with further improved performance.
URI: https://hdl.handle.net/10356/139196
ISSN: 0935-9648
DOI: 10.1002/adma.201904243
Rights: This is the peer reviewed version of the following article: Qing, J., Kuang, C., Wang, H., Wang, Y., Liu, X.-K, Bai, S., . . . Gao, F. (2019). High-quality Ruddlesden-Popper perovskite films based on in situ formed organic spacer cations. Advanced Materials, 31(41), 1904243-, which has been published in final form at https://doi.org/10.1002/adma.201904243. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: embargo_20201018
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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