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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1131Ultraviolet Sensor Based on Organic/Inorganic...

Ultraviolet Sensor Based on Organic/Inorganic Heterojunction between PEDOT:PSS and ZnO Nanoparticles Thin Films

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Abstract:

In this work, the ultraviolet (UV) sensors based on heterojunction between layer of zinc oxide nanoparticles (ZnO NPs) and poly (3,4-ethylenedioxythiophene):poly (styrenesulfonic acid) (PEDOT:PSS) were fabricated, characterized and studied in the electrical response to UV 365 nm. The ZnO NPs layer was solution-based coated on the top of PEDOT:PSS film on the patterned indium tin oxide (ITO) coated on glass. Aluminum was deposited as the top electrode of the device. The current-voltage (I-V) characteristic shows the rectifying behavior in the dark field. With the UV irradiation, the reverse bias current can be found and the forward bias current also highly increases. The current-voltage data fitting with the thermionic emission model shows that the potential barrier height at the heterojunction decreases with illuminating by UV light. Relative high photoresponse of the device exhibits the potential to UV detector application.

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Periodical:

Advanced Materials Research (Volume 1131)

Pages:

157-162

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1131.157

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Online since:

December 2015

Authors:

Kittipong Tantisantisom*, Kanpitcha Jiramitmonkon, Thanakorn Jiemsakul, Thanawee Chodjarusawad, Udom Asawapirom

Keywords:

Heterojunction, PEDOT:PSS, UV Sensor, ZnO Nanoparticles

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* - Corresponding Author

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