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Fluorescent Alloy CsPbxMn1–xI3 Perovskite Nanocrystals with High Structural and Optical Stability

Open access
Akkerman, Quinten A., Meggiolaro, Daniele, Dang, Zhiya, De Angelis, Filippo, Manna, Liberato·2017·ACS Energy Letters

Abstract

Abstract CsPbI3 nanocrystals are still limited in their use because of their phase instability as they degrade into the yellow nonemitting δ-CsPbI3 phase within a few days. We show that alloyed CsPbxMn1–xI3 nanocrystals have essentially the same optical features and crystal structure as the parent α-CsPbI3 system, but they are stable in films and in solution for periods over a month. The stabilization stems from a small decrease in the lattice parameters slightly increasing the Goldsmith tolerance factor, combined with an increase in the cohesive energy. Finally, hybrid density functional calculations confirm that the Mn2+ levels fall within the conduction band, thus not strongly altering the optical properties.

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Metadata

Authors
Akkerman, Q. A., Meggiolaro, D., Dang, Z., De Angelis, F., & Manna, L.
Venue
ACS Energy Letters
Published
2017-08-31
Volume
2
Issue
9
Pages
2183-2186
ISSN
2380-8195 (ISSN-L)
OpenAlex
W2746192832
Cited by
368
References
1
FWCI
17.45
Type
journal article
Language
en
Open access
hybrid

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Akkerman, Q. A., Meggiolaro, D., Dang, Z., De Angelis, F., & Manna, L. (2017). Fluorescent Alloy CsPbxMn1–xI3 Perovskite Nanocrystals with High Structural and Optical Stability. ACS Energy Letters. https://doi.org/10.1021/acsenergylett.7b00707

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