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https://hdl.handle.net/10356/142577
Title: | Perturbation-induced seeding and crystallization of hybrid perovskites over surface-modified substrates for optoelectronic devices | Authors: | 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 |
Keywords: | Engineering::Materials | Issue Date: | 2019 | Source: | 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 | Project: | NRF-CRP14-2014-03 ONRG-NICOP-N62909-17-1-2155 |
Journal: | ACS Applied Materials & Interfaces | Abstract: | 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. | URI: | https://hdl.handle.net/10356/142577 | ISSN: | 1944-8244 | DOI: | 10.1021/acsami.9b05965 | Rights: | 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 | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | ERI@N Journal Articles |
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