Strain-induced carrier mobility modulation in organic semiconductors
- Title
- Strain-induced carrier mobility modulation in organic semiconductors
- Author
- 이상욱
- Keywords
- Organic semiconductor; Strain; Charge transport; Carrier mobility; DFT calculation
- Issue Date
- 2022-03
- Publisher
- 한국공업화학회
- Citation
- Journal of Industrial and Engineering Chemistry, v. 107.0, Page. 137-144
- Abstract
- We systematically investigated the strain-induced carrier mobility of two representative n-type and p-type organic semiconductors, 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) and N, N'-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8), in order to understand the relationship between the carrier mobility and intermolecular packing configurations. The applied strain to organic semiconductors changes the intermolecular packing configurations, such as the pi-pi stacking distance and p-p overlap extent between adjacent p-conjugated molecules. In particular, the in-phase and out-of-phase p-p orbital interactions cause carrier mobility variations and energy level splitting by constructive/bonding and destructive/antibonding interactions between adjacent p-conjugated molecules. Our results demonstrate periodic changes of the strain-induced carrier mobility with respect to the p-p stacking distance and pi-pi overlap type, respectively. Furthermore, we propose that the periodic behaviors of carrier mobility can be attributed to the alternating phase changes of the molecular orbital interactions under applied strain. Based on the understanding of the intermolecular interactions and the structure-property relationships, we can provide a strain path for optimal carrier mobility modulation and the development of high-performance organic electronic devices. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S1226086X21006468?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/177492
- ISSN
- 1226-086X;1876-794X
- DOI
- 10.1016/j.jiec.2021.11.042
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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