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Electrical Studies of ZnO Nanowires and Metal Contacts
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Electrical Studies of ZnO Nanowires and Metal Contacts

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Abstract:

ZnO nanowires are recently used in optoelectronic devices such as sensors, solar cells, and light emitting diodes due to its unique optical and electrical properties. In such devices, a contact between the ZnO nanowires and a metal electrode exists. Hence understanding electrical characteristic between the ZnO nanowires and a metal electrode can facilitate optoelectronic device design. In this work, ZnO nanowires were grown on Indium Tin Oxide (ITO) substrates using a hydrothermal method. Simple devices using the nanowires sandwiched between the ITO and a metal contact (i.e. Au, Al) were fabricated and characterized by a current-voltage measurement. Moreover, studies on p-n junctions between the ZnO nanowires and p-type polymers, poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) and poly(9,9-dioctylfluorene) (PFO), were also fabricated and characterized. The current-voltage measurement of devices clearly shows the rectifying behavior, which is an important characteristic of diodes.

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Periodical:

Advanced Materials Research (Volume 1131)

Pages:

3-7

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1131.3

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Online since:

December 2015

Authors:

Sattra Thongma, Artitsupa Boontan, Thitikorn Boonkoom, Kittipong Tantisantisom*

Keywords:

Ohmic Contact, Schottky Contact, Semiconducting Polymer, ZnO Nanowires

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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