Template-Free Synthesis of Mesoporous CuO Dandelion Structures For Optoelectronic Applications

A simple template-free hydrothermal route was used for the synthesis of novel mesoporous CuO dandelion structures formed by self-organized CuO nanorods. A very high surface area ∼325 m2/g and remarkably enhanced photoconductivity under white light irradiation of the CuO dandelions were observed comp...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2010-05, Vol.2 (5), p.1536-1542
Main Authors: Manna, Sujit, Das, Kajari, De, S. K
Format: Article
Language:English
Subjects:
Copper - chemistry
Crystallization - methods
Electronics - instrumentation
Equipment Design
Materials Testing
Nanostructures - chemistry
Nanostructures - ultrastructure
Optical Devices
Porosity
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Summary:A simple template-free hydrothermal route was used for the synthesis of novel mesoporous CuO dandelion structures formed by self-organized CuO nanorods. A very high surface area ∼325 m2/g and remarkably enhanced photoconductivity under white light irradiation of the CuO dandelions were observed compared to the nanocrystals. The extremely high photoconductivity is attributed to the presence of oxygen related hole-trap states at the large surface area of the dandelions. The fast response (τ = 24 s) of the photocurrent holds promise for the fast photo-sensing device applications.
ISSN:1944-8244
1944-8252
DOI:10.1021/am100197w