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Correlation of Molecular Structure and Charge Transport Properties: A Case Study in Naphthalenediimide-Based Copolymer Semiconductors
Hu, Yuanyuan1; Li, Zhaojun2; Jiang, Lang3; Chen, Zhuojun1; Liao, Lei1; Wang, Ergang2
2018-08-01
Source PublicationADVANCED ELECTRONIC MATERIALS
ISSN2199-160X
Volume4Issue:8
AbstractRecent development of donor-acceptor (D-A) structure copolymers has led to the remarkable enhancement of mobility over 10 cm(2) (V s)(-1) in organic semiconductors. Despite these achievements, a thorough understanding of the correlation between molecular structure and charge transport properties is still not achieved. With this goal in mind, the electrical properties of three copolymers based on the naphthalenediimide (NDI) acceptor with different donor units are compared, and the effect of increasing donor length on the electronic structure of semiconductors and the resulting charge transport performance is studied. Structural and morphological characterizations are done to reveal the macro transport properties of the semiconductor films. Then, electrical measurements of the field-effect transistors at variable temperatures are carried out to probe the charge transport property of the semiconductor films. Overall, it is found that the increasing of the donor length from one to three thiophene units would reduce the energetic disorder in the semiconductor films. Meanwhile, the electron cloud overlap between acceptor units would be weakened, which is detrimental to electron transport. Thus, a trading-off between energetic disorder and electron cloud overlap is critical for achieving high mobility in this NDI-based copolymer system.
KeywordCharge Transport Electron Cloud Overlaps Energetic Disorder Molecular Structures Ofets
DOI10.1002/aelm.201800203
Indexed BySCI
Language英语
WOS IDWOS:000441125200023
PublisherWILEY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/41930
Collection有机固体实验室
Corresponding AuthorHu, Yuanyuan; Liao, Lei; Wang, Ergang
Affiliation1.Hunan Univ, Sch Phys & Elect, Minist Educ, Key Lab Micronano Optoelect Devices, Changsha 410082, Hunan, Peoples R China
2.Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden
3.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Hu, Yuanyuan,Li, Zhaojun,Jiang, Lang,et al. Correlation of Molecular Structure and Charge Transport Properties: A Case Study in Naphthalenediimide-Based Copolymer Semiconductors[J]. ADVANCED ELECTRONIC MATERIALS,2018,4(8).
APA Hu, Yuanyuan,Li, Zhaojun,Jiang, Lang,Chen, Zhuojun,Liao, Lei,&Wang, Ergang.(2018).Correlation of Molecular Structure and Charge Transport Properties: A Case Study in Naphthalenediimide-Based Copolymer Semiconductors.ADVANCED ELECTRONIC MATERIALS,4(8).
MLA Hu, Yuanyuan,et al."Correlation of Molecular Structure and Charge Transport Properties: A Case Study in Naphthalenediimide-Based Copolymer Semiconductors".ADVANCED ELECTRONIC MATERIALS 4.8(2018).
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