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Scale-up synthesis of ZnO nanorods for printing inexpensive ZnO/polymer white light-emitting diode
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska högskolan. (Fysikalisk elektronik och Nanoteknologi / Physical Electronics and nanotechnology)
Acreo AB, Printed Electronics, P.O. Box 787, 60117 Norrköping, Sweden.
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska högskolan. (Fysikalisk elektronik och Nanoteknologi / Physical Electronics and nanotechnology)
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska högskolan. (Fysikalisk elektronik och Nanoteknologi / Physical Electronics and nanotechnology)
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2012 (Engelska)Ingår i: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, Vol. 47, nr 11, s. 4726-4731Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In this study, possibilities of scaling up the synthesis of zinc oxide (ZnO) nanorods (NRs) by the hydrothermal method have been explored. It was found that batches yielding several grams can easily be made using common and easily available materials. Further, a printable composition was fabricated by mixing the obtained ZnO NRs into a common solvent-based screen printable varnish. Scanning electron microscope, high-resolution transmission electron microscope, X-ray diffraction, UV–vis spectroscopy analysis of the scaled up batch indicated that the ZnO nanostructures were of NRs shape, well crystalline and having less defects. Using the ZnO NRs-based printable composition a device fabrication on a flexible substrate was demonstrated, producing a flexible light-emitting device being highly tolerant to bending.

Ort, förlag, år, upplaga, sidor
Springer, 2012. Vol. 47, nr 11, s. 4726-4731
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
URN: urn:nbn:se:liu:diva-76674DOI: 10.1007/s10853-012-6342-1ISI: 000302244500026OAI: oai:DiVA.org:liu-76674DiVA, id: diva2:515778
Tillgänglig från: 2012-04-16 Skapad: 2012-04-16 Senast uppdaterad: 2017-12-07Bibliografiskt granskad
Ingår i avhandling
1. ZnO and CuO Nanostructures: Low Temperature Growth, Characterization, their Optoelectronic and Sensing Applications
Öppna denna publikation i ny flik eller fönster >>ZnO and CuO Nanostructures: Low Temperature Growth, Characterization, their Optoelectronic and Sensing Applications
2012 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

One dimensional (1-D), zinc oxide (ZnO) and copper (II) oxide (CuO), nanostructures have great potential for applications in the fields of optoelectronic and sensor devices. Research on nanostructures is a fascinating field that has evolved during the last few years especially after the utilization of the hydrothermal growth method. Using this method variety of nanostructures can be grown from solutions, it is a cheap, easy, and environment friendly approach. These nanostructures can be synthesized on various conventional and nonconventional substrates such as silicon, plastic, fabrics and paper etc.

The primary purpose of the work presented in this thesis is to realize controllable growth of ZnO, CuO and nanohybrid ZnO/CuO nanostructures and to process and develop white light emitting diodes and sensor devices from the corresponding nanostructures.

The first part of the thesis deals with ZnO nanostructures grown under different hydrothermal conditions in order to gain a better understanding of the growth. Possible parameters affecting the growth such as the pH, the growth temperature, the growth time, and the precursors  concentration which can alter the morphology of the nanostructures were investigated (paper 1). Utilizing the advantage of the low temperature for growth we synthesized ZnO nanostructures on different substrates, specifically on flexible substrates, which are likely to be integrated with flexible organic substrates for future foldable and disposable electronics (paper 2, 3).

In the second part of the thesis, using the results and findings from the growth of ZnO nanostructures, it was possible to successfully implement ZnO nanostructures for white light emitting diodes (LEDs) on different flexible substrates (paper 4, 5).

In paper 4 we realized a ZnO/polymer LED grown on a paper substrate. In paper 5 we extended the idea to print the ZnO nanorods/polymer hybrid LEDs with potential application to large area flexible displays.

In the last part of the thesis, CuO and nanohybrid ZnO/CuO nanostructures were utilized to fabricate Ag+ detection and humidity sensors. In paper 6 we reported Ag+ selective electrochemical sensor based on the use of functionalized CuO nanopetals. To combine the advantages of both oxides nanostructures and to improve the performance we fabricated a pn-heterojuction using intrinsic n-ZnO nanorods and p-CuO nanostructures which were then utilized as an efficient humidity sensor (paper 7).

Ort, förlag, år, upplaga, sidor
Linköping: Linköping University Electronic Press, 2012. s. 66
Serie
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1441
Nyckelord
Zinc oxide, Copper (II) oxide, Nanostructures, Hydrothermal growth, Light emitting diodes.
Nationell ämneskategori
Naturvetenskap
Identifikatorer
urn:nbn:se:liu:diva-76677 (URN)978-91-7519-912-2 (ISBN)
Disputation
2012-05-11, K3, Kåkenhus, Campus Norrköping, Linköpings universitet, Norrköping, 10:15 (Engelska)
Opponent
Handledare
Tillgänglig från: 2012-04-16 Skapad: 2012-04-16 Senast uppdaterad: 2014-01-15Bibliografiskt granskad

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