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  Mapping Orientational Order of Charge-Probed Domains in a Semiconducting Polymer

Martino, N., Fazzi, D., Sciascia, C., Luzio, A., Antognazza, M. R., & Caironi, M. (2014). Mapping Orientational Order of Charge-Probed Domains in a Semiconducting Polymer. ACS Nano, 8(6), 5968-5978. doi:10.1021/nn5011182.

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資料種別: 学術論文

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nn5011182_si_001.pdf (付録資料), 3MB
ファイルのパーマリンク:
https://hdl.handle.net/11858/00-001M-0000-0024-A80D-4
ファイル名:
nn5011182_si_001.pdf
説明:
Supporting Information
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公開
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application/pdf / [MD5]
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-
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 作成者:
Martino, Nicola1, 2, 著者
Fazzi, Daniele1, 3, 著者           
Sciascia, Calogero1, 著者
Luzio, Alessandro1, 著者
Antognazza, Maria Rosa1, 著者
Caironi, Mario1, 著者
所属:
1Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Via G. Pascoli 70/3, 20133 Milano, Italy, ou_persistent22              
2Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci, 32, 20133 Milano, Italy, ou_persistent22              
3Research Department Thiel, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445590              

内容説明

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キーワード: charge transport . organic transistor . polymer semiconductor . thin film microstructure . charge modulation spectroscopy
 要旨: Structure–property relationships are of fundamental importance to develop quantitative models describing charge transport in organic semiconductor based electronic devices, which are among the best candidates for future portable and lightweight electronic applications. While microstructural investigations, such as those based on X-rays, electron microscopy, or polarized optical probes, provide necessary information for the rationalization of transport in macromolecular solids, a general model predicting how charge accommodates within structural maps is not yet available. Therefore, techniques capable of directly monitoring how charge is distributed when injected into a polymer film and how it correlates to structural domains can help fill this gap. Supported by density functional theory calculations, here we show that polarized charge modulation microscopy (p-CMM) can unambiguously and selectively map the orientational order of the only conjugated segments that are probed by mobile charge in the few nanometer thick accumulation layer of a high-mobility polymer-based field-effect transistor . Depending on the specific solvent-induced microstructure within the accumulation layer, we show that p-CMM can image charge-probed domains that extend from submicrometer to tens of micrometers size, with markedly different degrees of alignment. Wider and more ordered p-CMM domains are associated with improved carrier mobility, as extracted from device characteristics. This observation evidences the unprecedented opportunity to correlate, directly in a working device, electronic properties with structural information on those conjugated segments involved in charge transport at the buried semiconductor–dielectric interface of a field-effect device.

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言語: eng - English
 日付: 2014-02-252014-05-112014-05-122014-06-24
 出版の状態: 出版
 ページ: 11
 出版情報: -
 目次: -
 査読: 査読あり
 識別子(DOI, ISBNなど): DOI: 10.1021/nn5011182
 学位: -

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出版物 1

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出版物名: ACS Nano
種別: 学術雑誌
 著者・編者:
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出版社, 出版地: Washington, DC : American Chemical Society
ページ: - 巻号: 8 (6) 通巻号: - 開始・終了ページ: 5968 - 5978 識別子(ISBN, ISSN, DOIなど): ISSN: 1936-0851
CoNE: https://pure.mpg.de/cone/journals/resource/1936-0851