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Limiting Heterovalent B-Site Doping in CsPbI3 Nanocrystals: Phase and Optical Stability AITranslate

Suman Bera; Dibyendu Ghosh; Anirban Dutta; Sayan Bhattacharyya; Sudip Chakraborty; Narayan Pradhan;
School of Materials Sciences, Indian Association for the Cultivation of Science; Indian Institute of Science Education and Research;School of Materials Sciences, Indian Association for the Cultivation of Science; Indian Institute of Science Education and Research; Uppsala University;School of Materials Sciences, Indian Association for the Cultivation of Science
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Publisher: ACS
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Abstract AITranslate

B-site doping with various metal ions in α-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.

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DOI：https://doi.org/10.1021/acsenergylett.9b00787

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B-site doping with various metal ions in α-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.

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GB/T 7714-2015 [1] Suman Bera, Dibyendu Ghosh, Anirban Dutta, et al. ACS Energy Letters, 2019(4). DOI:10.1021/acsenergylett.9b00787.
MLA [1] Suman Bera, et al., ACS Energy Letters, no. 4, 2019, https://doi.org/10.1021/acsenergylett.9b00787.
APA [1] Suman Bera, Dibyendu Ghosh, Anirban Dutta, Sayan Bhattacharyya, Sudip Chakraborty, & Narayan Pradhan. (2019). ACS Energy Letters(4). https://doi.org/10.1021/acsenergylett.9b00787
IEEE [1] Suman Bera, Dibyendu Ghosh, Anirban Dutta, Sayan Bhattacharyya, Sudip Chakraborty, and Narayan Pradhan, ACS Energy Letters, no. 4, 2019, doi: 10.1021/acsenergylett.9b00787.