Highly Oriented Organic Ferroelectric Films with Single-Crystal-Level Properties from Restrained Crystallization
Abstract
Device applications often require thin film growth with quasi-two-dimensional morphology and crystallization which are not always compatible. In this work, we exploit the method of low-temperature deposition followed by restrained crystallization (LDRC) in the growth of crystalline organic molecular thin films, which tend to grow three-dimensionally with random orientations. We demonstrate that, for 2-methylbenzimidazole (MBI), a molecular ferroelectric that tends to crystalize in spherulites, the quasi-two-dimensional films can be grown using LDRC with highly oriented polar axes and single-crystal-level ferroelectric properties. The crystallization process was shown to occur during the post-deposition annealing process using the in situ electrical measurements. The limited diffusion, low nucleation density, and low activation energy was found critical for the formation of the plate-shaped quasi-two-dimensional films. These results mark an important step in elucidating the LDRC as an effective and general approach for fabricating films with balanced crystallinity and morphology which are critical for applications.
- Authors:
-
[1];
[2]
- Univ. of Nebraska, Lincoln, NE (United States). Dept. of Physics and Astronomy
- Univ. of Nebraska, Lincoln, NE (United States). Dept. of Physics and Astronomy; Univ. of Nebraska, Lincoln, NE (United States). Nebraska Center for Materials and Nanoscience
- Publication Date:
- Research Org.:
- Univ. of Nebraska, Lincoln, NE (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1866597
- Grant/Contract Number:
- SC0019173; EECS-1542182
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Crystal Growth and Design
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 4; Journal ID: ISSN 1528-7483
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Yuan, Yifan, Ni, Yuanyuan, Jiang, Xuanyuan, Yun, Yu, Li, Jing, and Xu, Xiaoshan. Highly Oriented Organic Ferroelectric Films with Single-Crystal-Level Properties from Restrained Crystallization. United States: N. p., 2022.
Web. doi:10.1021/acs.cgd.1c01176.
Yuan, Yifan, Ni, Yuanyuan, Jiang, Xuanyuan, Yun, Yu, Li, Jing, & Xu, Xiaoshan. Highly Oriented Organic Ferroelectric Films with Single-Crystal-Level Properties from Restrained Crystallization. United States. https://doi.org/10.1021/acs.cgd.1c01176
Yuan, Yifan, Ni, Yuanyuan, Jiang, Xuanyuan, Yun, Yu, Li, Jing, and Xu, Xiaoshan. Tue .
"Highly Oriented Organic Ferroelectric Films with Single-Crystal-Level Properties from Restrained Crystallization". United States. https://doi.org/10.1021/acs.cgd.1c01176. https://www.osti.gov/servlets/purl/1866597.
@article{osti_1866597,
title = {Highly Oriented Organic Ferroelectric Films with Single-Crystal-Level Properties from Restrained Crystallization},
author = {Yuan, Yifan and Ni, Yuanyuan and Jiang, Xuanyuan and Yun, Yu and Li, Jing and Xu, Xiaoshan},
abstractNote = {Device applications often require thin film growth with quasi-two-dimensional morphology and crystallization which are not always compatible. In this work, we exploit the method of low-temperature deposition followed by restrained crystallization (LDRC) in the growth of crystalline organic molecular thin films, which tend to grow three-dimensionally with random orientations. We demonstrate that, for 2-methylbenzimidazole (MBI), a molecular ferroelectric that tends to crystalize in spherulites, the quasi-two-dimensional films can be grown using LDRC with highly oriented polar axes and single-crystal-level ferroelectric properties. The crystallization process was shown to occur during the post-deposition annealing process using the in situ electrical measurements. The limited diffusion, low nucleation density, and low activation energy was found critical for the formation of the plate-shaped quasi-two-dimensional films. These results mark an important step in elucidating the LDRC as an effective and general approach for fabricating films with balanced crystallinity and morphology which are critical for applications.},
doi = {10.1021/acs.cgd.1c01176},
journal = {Crystal Growth and Design},
number = 4,
volume = 22,
place = {United States},
year = {Tue Feb 22 00:00:00 EST 2022},
month = {Tue Feb 22 00:00:00 EST 2022}
}
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