| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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The Hole Transport Characteristics of 1, 4, 5, 8, 9 and 11-Hexaazatriphenylene-Hexacarbonitrile by Blending |
| Yan-Ping Wang1, Jin-Ying Huang1, Jiang-Shan Chen1, Xian-Feng Qiao1, De-Zhi Yang1, Dong-Ge Ma1**, Li-Song Dong2** |
1State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
2Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
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| Cite this article: |
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Yan-Ping Wang, Jin-Ying Huang, Jiang-Shan Chen et al 2016 Chin. Phys. Lett. 33 027302 |
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Abstract The hole transport characteristics of molecule blends of 1, 4, 5, 8, 9 and 11-hexaazatriphenylene-hexacarbonitrile (HAT-CN): N,N'-di(naphthalene-1-yl)-N,N'-diphenyl-benzidine (NPB) and HAT-CN: 4,4'-cyclohexylidenebis[N,N-bis(4-methylphenyl)benzenamine] (TAPC) with various NPB and TAPC mixing concentrations (5–90 wt%) are studied. When the concentration is in the range of 5–80 wt%, it is found that the hole conductions in the two blends are space-charge-limited current (SCLC) with free trap distributions. The current–voltage characteristics of the two blends show SCLC with exponential trap distributions at the concentration of 90 wt%. The hole mobilities of the two blends are very close (10$^{-4}$–10$^{-3}$ cm$^{2}$V$^{-1}$s$^{-1}$), the dependence of electric field and temperature can be described by the modified Poole–Frenkel model. The hole mobility and activation energy of the two blends depending on concentration are similar.
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Received: 09 October 2015
Published: 26 February 2016
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| PACS: |
73.40.Lq
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(Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)
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73.50.Dn
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(Low-field transport and mobility; piezoresistance)
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72.20.Ee
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(Mobility edges; hopping transport)
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73.61.Ph
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(Polymers; organic compounds)
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