Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.orgel.2010.06.014
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dc.titleEmbedded organic hetero-junction and negative-differential-resistance photocurrent based on bias-assisted natural-drying of organic drops
dc.contributor.authorXie, X.N.
dc.contributor.authorWang, Y.
dc.contributor.authorGao, X.
dc.contributor.authorLee, K.K.
dc.contributor.authorSow, C.H.
dc.contributor.authorLoh, K.P.
dc.contributor.authorWee, A.T.S.
dc.date.accessioned2014-06-23T05:38:25Z
dc.date.available2014-06-23T05:38:25Z
dc.date.issued2010-09
dc.identifier.citationXie, X.N., Wang, Y., Gao, X., Lee, K.K., Sow, C.H., Loh, K.P., Wee, A.T.S. (2010-09). Embedded organic hetero-junction and negative-differential-resistance photocurrent based on bias-assisted natural-drying of organic drops. Organic Electronics: physics, materials, applications 11 (9) : 1543-1548. ScholarBank@NUS Repository. https://doi.org/10.1016/j.orgel.2010.06.014
dc.identifier.issn15661199
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/76088
dc.description.abstractThis work reports a bias-assisted natural-drying method in film drop-casting for the formation of an interfacial layer inside the bulk organic film. The natural-drying facilitates phase segregation in the polymer blend, while the simultaneous substrate bias application induces host electronic states in the interfacial layer. Consequently, an embedded organic hetero-junction is formed between the interfacial layer and bulk film. The hetero-junction not only enhances the separation of photoexcited electron-hole (ep-hp) pairs, but also allows for the selective storage and extraction of photocarriers through the bias-induced host states. Unusual photocurrent with negative-differential- resistance (NDR) is thus obtained for the first time for organic optoelectronic devices. The typical peak-to-valley ratio of the NDR peak is ≥500, and the NDR behavior is stable for prolonged photocurrent measurements. The bias-assisted natural-drying method is simple and cost-effective, and can be used as a new approach to the design and control of organic interfaces. © 2010 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.orgel.2010.06.014
dc.sourceScopus
dc.subjectBias-assissted drop casting
dc.subjectOrganic hetero-junction
dc.subjectPhoto current negative differential resistance
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.contributor.departmentCHEMISTRY
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.description.doi10.1016/j.orgel.2010.06.014
dc.description.sourcetitleOrganic Electronics: physics, materials, applications
dc.description.volume11
dc.description.issue9
dc.description.page1543-1548
dc.identifier.isiut000281519700010
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