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Limiting Heterovalent B-Site Doping in CsPbI3 Nanocrystals: Phase and Optical Stability
Indian Assoc Cultivat Sci, Sch Mat Sci, Kolkata 700032, India.
Indian Inst Sci Educ & Res, Dept Chem Sci, Kolkata 741246, India;Indian Inst Sci Educ & Res, Ctr Adv Funct Mat, Kolkata 741246, India.
Indian Assoc Cultivat Sci, Sch Mat Sci, Kolkata 700032, India.
Indian Inst Sci Educ & Res, Dept Chem Sci, Kolkata 741246, India;Indian Inst Sci Educ & Res, Ctr Adv Funct Mat, Kolkata 741246, India.
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2019 (English)In: ACS ENERGY LETTERS, ISSN 2380-8195, Vol. 4, no 6, p. 1364-1369Article in journal (Refereed) Published
Abstract [en]

B-site doping with various metal ions in alpha-CsPbI3 has been proven to be a potential approach in bringing phase stability to these nanocrystals. However, while the doping of various homovalent ions in replacing Pb(II) has been extensively studied, heterovalent doping was observed to be limited. To understand the impact of heterovalent doping, Sb(III) was chosen here as an effective dopant for occupying the Pb(II) position in CsPbI3 nanocrystals. Importantly, it was observed that insertion of Sb(III) also stabilized the crystal phase of these red-emitting nanocrystals, but only with limited doping. However, with more intake, the cube shape turned to platelet and therefore also reduced the stability. Details of the insights of formation of these doped nanostructures are investigated, and further, these were implemented for photovoltaic application and comparable efficiency was recorded.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 4, no 6, p. 1364-1369
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Materials Chemistry
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URN: urn:nbn:se:uu:diva-390216DOI: 10.1021/acsenergylett.9b00787ISI: 000472121800020OAI: oai:DiVA.org:uu-390216DiVA, id: diva2:1341011
Available from: 2019-08-07 Created: 2019-08-07 Last updated: 2019-08-07Bibliographically approved

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Chakraborty, Sudip

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