Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires

Jiakai Liu; Kepeng Song; Yongwoo Shin; Xin Liu; Jie Chen; Kexin Yao; Jun Pan; Chen Yang; Jun Yin; Liang-Jin Xu; Haoze Yang; Ahmed El-Zohry; Bin Xin; Somak Mitra; Mohamed N. Hedhili; Iman S. Roqan; Omar F. Mohammed; Yu Han; Osman Bakr

doi:10.1021/acs.chemmater.9b00680

Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires

Jiakai Liu, Kepeng Song, Yongwoo Shin, Xin Liu, Jie Chen, Kexin Yao, Jun Pan, Chen Yang, Jun Yin, Liang-Jin Xu, Haoze Yang, Ahmed El-Zohry, Bin Xin, Somak Mitra, Mohamed N. Hedhili, Iman S. Roqan, Omar F. Mohammed, Yu Han, Osman Bakr

Research output: Contribution to journal › Article › peer-review

136 Scopus citations

Abstract

The rapid development of halide perovskite synthesis offers the opportunity to fabricate high-quality perovskite nanocrystals (NCs), whose structural uniformity can lead to assembled supra-structures with improved device performance and novel collective properties. Light is known to significantly affect the structure and properties of halide perovskites and plays a crucial role in the growth and assembly of their crystals. Nevertheless, the light-induced growth mechanisms of perovskite NCs are not yet clearly understood. In this work, we performed a systematic study of the visible-light-induced template-free synthesis of CsPbBr3 nanowires (NWs) generated through self-assembly of cubic (in phase and close to cubic morphology) NCs. Using atomic-resolution electron microscopy, we visualized the cubic-to-orthorhombic phase transition in NCs and the interface between coalesced NCs. Remarkably, the images of the interface revealed the coexistence of CsBr and PbBr2 surface terminations in halide perovskites. Our results shed light on the mechanism underlying the observed anisotropic assembly of halide perovskites and elucidate the vital role of light illumination during this process. More importantly, as an elegant and promising green-chemistry approach, light-induced self-assembly represents a rational method for designing perovskites.

Original language	English (US)
Pages (from-to)	6642-6649
Number of pages	8
Journal	Chemistry of Materials
Volume	31
Issue number	17
DOIs	https://doi.org/10.1021/acs.chemmater.9b00680
State	Published - Apr 22 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by King Abdullah University of Science and Technology (KAUST). Xin Liu was supported by the National Science Foundation of China (NSFC, No.: 21771029 and 21573034). J. Liu would like to acknowledge Dr. Jiangtao Jia from KAUST Advanced Membranes and Porous Materials Center for his valuable suggestions. The supercomputer time was supported by the Supercomputing Core Laboratory at KAUST.

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10.1021/acs.chemmater.9b00680

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Liu, J., Song, K., Shin, Y., Liu, X., Chen, J., Yao, K., Pan, J., Yang, C., Yin, J., Xu, L.-J., Yang, H., El-Zohry, A., Xin, B., Mitra, S., Hedhili, M. N., Roqan, I. S., Mohammed, O. F., Han, Y., & Bakr, O. (2019). Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires. Chemistry of Materials, 31(17), 6642-6649. https://doi.org/10.1021/acs.chemmater.9b00680

@article{90140739d0aa4b3d81f8f69fad1a154a,

title = "Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires",

abstract = "The rapid development of halide perovskite synthesis offers the opportunity to fabricate high-quality perovskite nanocrystals (NCs), whose structural uniformity can lead to assembled supra-structures with improved device performance and novel collective properties. Light is known to significantly affect the structure and properties of halide perovskites and plays a crucial role in the growth and assembly of their crystals. Nevertheless, the light-induced growth mechanisms of perovskite NCs are not yet clearly understood. In this work, we performed a systematic study of the visible-light-induced template-free synthesis of CsPbBr3 nanowires (NWs) generated through self-assembly of cubic (in phase and close to cubic morphology) NCs. Using atomic-resolution electron microscopy, we visualized the cubic-to-orthorhombic phase transition in NCs and the interface between coalesced NCs. Remarkably, the images of the interface revealed the coexistence of CsBr and PbBr2 surface terminations in halide perovskites. Our results shed light on the mechanism underlying the observed anisotropic assembly of halide perovskites and elucidate the vital role of light illumination during this process. More importantly, as an elegant and promising green-chemistry approach, light-induced self-assembly represents a rational method for designing perovskites.",

author = "Jiakai Liu and Kepeng Song and Yongwoo Shin and Xin Liu and Jie Chen and Kexin Yao and Jun Pan and Chen Yang and Jun Yin and Liang-Jin Xu and Haoze Yang and Ahmed El-Zohry and Bin Xin and Somak Mitra and Hedhili, {Mohamed N.} and Roqan, {Iman S.} and Mohammed, {Omar F.} and Yu Han and Osman Bakr",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by King Abdullah University of Science and Technology (KAUST). Xin Liu was supported by the National Science Foundation of China (NSFC, No.: 21771029 and 21573034). J. Liu would like to acknowledge Dr. Jiangtao Jia from KAUST Advanced Membranes and Porous Materials Center for his valuable suggestions. The supercomputer time was supported by the Supercomputing Core Laboratory at KAUST.",

year = "2019",

month = apr,

day = "22",

doi = "10.1021/acs.chemmater.9b00680",

language = "English (US)",

volume = "31",

pages = "6642--6649",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society",

number = "17",

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Liu, J, Song, K, Shin, Y, Liu, X, Chen, J, Yao, K, Pan, J, Yang, C, Yin, J, Xu, L-J, Yang, H, El-Zohry, A, Xin, B, Mitra, S, Hedhili, MN , Roqan, IS , Mohammed, OF, Han, Y & Bakr, O 2019, 'Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires', Chemistry of Materials, vol. 31, no. 17, pp. 6642-6649. https://doi.org/10.1021/acs.chemmater.9b00680

TY - JOUR

T1 - Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires

AU - Liu, Jiakai

AU - Song, Kepeng

AU - Shin, Yongwoo

AU - Liu, Xin

AU - Chen, Jie

AU - Yao, Kexin

AU - Pan, Jun

AU - Yang, Chen

AU - Yin, Jun

AU - Xu, Liang-Jin

AU - Yang, Haoze

AU - El-Zohry, Ahmed

AU - Xin, Bin

AU - Mitra, Somak

AU - Hedhili, Mohamed N.

AU - Roqan, Iman S.

AU - Mohammed, Omar F.

AU - Han, Yu

AU - Bakr, Osman

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by King Abdullah University of Science and Technology (KAUST). Xin Liu was supported by the National Science Foundation of China (NSFC, No.: 21771029 and 21573034). J. Liu would like to acknowledge Dr. Jiangtao Jia from KAUST Advanced Membranes and Porous Materials Center for his valuable suggestions. The supercomputer time was supported by the Supercomputing Core Laboratory at KAUST.

PY - 2019/4/22

Y1 - 2019/4/22

N2 - The rapid development of halide perovskite synthesis offers the opportunity to fabricate high-quality perovskite nanocrystals (NCs), whose structural uniformity can lead to assembled supra-structures with improved device performance and novel collective properties. Light is known to significantly affect the structure and properties of halide perovskites and plays a crucial role in the growth and assembly of their crystals. Nevertheless, the light-induced growth mechanisms of perovskite NCs are not yet clearly understood. In this work, we performed a systematic study of the visible-light-induced template-free synthesis of CsPbBr3 nanowires (NWs) generated through self-assembly of cubic (in phase and close to cubic morphology) NCs. Using atomic-resolution electron microscopy, we visualized the cubic-to-orthorhombic phase transition in NCs and the interface between coalesced NCs. Remarkably, the images of the interface revealed the coexistence of CsBr and PbBr2 surface terminations in halide perovskites. Our results shed light on the mechanism underlying the observed anisotropic assembly of halide perovskites and elucidate the vital role of light illumination during this process. More importantly, as an elegant and promising green-chemistry approach, light-induced self-assembly represents a rational method for designing perovskites.

AB - The rapid development of halide perovskite synthesis offers the opportunity to fabricate high-quality perovskite nanocrystals (NCs), whose structural uniformity can lead to assembled supra-structures with improved device performance and novel collective properties. Light is known to significantly affect the structure and properties of halide perovskites and plays a crucial role in the growth and assembly of their crystals. Nevertheless, the light-induced growth mechanisms of perovskite NCs are not yet clearly understood. In this work, we performed a systematic study of the visible-light-induced template-free synthesis of CsPbBr3 nanowires (NWs) generated through self-assembly of cubic (in phase and close to cubic morphology) NCs. Using atomic-resolution electron microscopy, we visualized the cubic-to-orthorhombic phase transition in NCs and the interface between coalesced NCs. Remarkably, the images of the interface revealed the coexistence of CsBr and PbBr2 surface terminations in halide perovskites. Our results shed light on the mechanism underlying the observed anisotropic assembly of halide perovskites and elucidate the vital role of light illumination during this process. More importantly, as an elegant and promising green-chemistry approach, light-induced self-assembly represents a rational method for designing perovskites.

UR - http://hdl.handle.net/10754/653070

UR - https://pubs.acs.org/doi/10.1021/acs.chemmater.9b00680

UR - http://www.scopus.com/inward/record.url?scp=85065076898&partnerID=8YFLogxK

U2 - 10.1021/acs.chemmater.9b00680

DO - 10.1021/acs.chemmater.9b00680

M3 - Article

SN - 0897-4756

VL - 31

SP - 6642

EP - 6649

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 17

ER -

Light-Induced Self-Assembly of Cubic CsPbBr3 Perovskite Nanocrystals into Nanowires

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