Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices
Growing a monocrystalline layer of lead halide perovskites directly over substrates is necessary to completely harness their stellar properties in optoelectronic devices, as the single crystals of these materials are extremely brittle. We study the crystallization mechanism of perovskites by antisol...
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sg-ntu-dr.10356-1425772021-01-08T02:24:56Z Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices Ahmad, Riyas Surendran, Abhijith Harikesh, Padinhare Cholakkal Haselsberger, Reinhard Nur Fadilah Jamaludin John, Rohit Abraham Koh, Teck Ming Bruno, Annalisa Leong, Wei Lin Mathews, Nripan Michel-Beyerle, Maria-Elisabeth Mhaisalkar, Subodh Gautam School of Chemical and Biomedical Engineering School of Materials Science and Engineering School of Physical and Mathematical Sciences Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) Engineering::Materials Lead Halide Perovskites Crystal Growth Growing a monocrystalline layer of lead halide perovskites directly over substrates is necessary to completely harness their stellar properties in optoelectronic devices, as the single crystals of these materials are extremely brittle. We study the crystallization mechanism of perovskites by antisolvent vapor diffusion to its precursor solution and find that heterogeneous nucleation prevails in the process, with the crystallization dish walls providing the energy to overcome the nucleation barrier. By perturbing the system using sonication, we are able to introduce homogeneously nucleated seed crystals in the precursor solution. These seeds lead to the growth of closely packed crystals over surface-modified substrates kept in the precursor solution. This crystallization process is substrate independent and scalable and can be utilized to fabricate planar optoelectronic devices. We demonstrate a methylammonium lead iodide planar crystal photoconductor with a colossal detectivity of 1.48 × 1013 Jones. NRF (Natl Research Foundation, S’pore) Accepted version 2020-06-24T10:46:26Z 2020-06-24T10:46:26Z 2019 Journal Article Ahmad, R., Surendran, A., Harikesh, P. C., Haselsberger, R., Nur Fadilah Jamaludin, John, R. A., . . . Mhaisalkar, S. G. (2019). Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices. ACS Applied Materials & Interfaces, 11(31), 27727-27734. doi:10.1021/acsami.9b05965 1944-8244 https://hdl.handle.net/10356/142577 10.1021/acsami.9b05965 31 11 27727 27734 en NRF-CRP14-2014-03 ONRG-NICOP-N62909-17-1-2155 ACS Applied Materials & Interfaces This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.9b05965 application/pdf |
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Engineering::Materials Lead Halide Perovskites Crystal Growth Ahmad, Riyas Surendran, Abhijith Harikesh, Padinhare Cholakkal Haselsberger, Reinhard Nur Fadilah Jamaludin John, Rohit Abraham Koh, Teck Ming Bruno, Annalisa Leong, Wei Lin Mathews, Nripan Michel-Beyerle, Maria-Elisabeth Mhaisalkar, Subodh Gautam Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices |
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Growing a monocrystalline layer of lead halide perovskites directly over substrates is necessary to completely harness their stellar properties in optoelectronic devices, as the single crystals of these materials are extremely brittle. We study the crystallization mechanism of perovskites by antisolvent vapor diffusion to its precursor solution and find that heterogeneous nucleation prevails in the process, with the crystallization dish walls providing the energy to overcome the nucleation barrier. By perturbing the system using sonication, we are able to introduce homogeneously nucleated seed crystals in the precursor solution. These seeds lead to the growth of closely packed crystals over surface-modified substrates kept in the precursor solution. This crystallization process is substrate independent and scalable and can be utilized to fabricate planar optoelectronic devices. We demonstrate a methylammonium lead iodide planar crystal photoconductor with a colossal detectivity of 1.48 × 1013 Jones. |
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School of Chemical and Biomedical Engineering |
author_facet |
School of Chemical and Biomedical Engineering Ahmad, Riyas Surendran, Abhijith Harikesh, Padinhare Cholakkal Haselsberger, Reinhard Nur Fadilah Jamaludin John, Rohit Abraham Koh, Teck Ming Bruno, Annalisa Leong, Wei Lin Mathews, Nripan Michel-Beyerle, Maria-Elisabeth Mhaisalkar, Subodh Gautam |
format |
Article |
author |
Ahmad, Riyas Surendran, Abhijith Harikesh, Padinhare Cholakkal Haselsberger, Reinhard Nur Fadilah Jamaludin John, Rohit Abraham Koh, Teck Ming Bruno, Annalisa Leong, Wei Lin Mathews, Nripan Michel-Beyerle, Maria-Elisabeth Mhaisalkar, Subodh Gautam |
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Ahmad, Riyas |
title |
Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices |
title_short |
Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices |
title_full |
Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices |
title_fullStr |
Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices |
title_full_unstemmed |
Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices |
title_sort |
perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices |
publishDate |
2020 |
url |
https://hdl.handle.net/10356/142577 |
_version_ |
1688665499783659520 |