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Photocurrent Characteristics of Solution-Processed Mercury Sulfide Nanoparticles-Thin Films on Plastic Substrates

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Abstract:

In this study, we synthesize mercury sulfide (HgS) nanoparticles (NPs) by the colloidal method and investigate the optoelectronic characteristics of the resulting HgS NPs-thin films on plastic substrates in air at room temperature. The HgS NPs with a size of about 6-nm show quantum confinement effects in the absorption and photoluminescence spectra of the HgS NPs-thin film. The flexible optoelectronic device is constructed with the HgS NPs-thin film on finger-pattered Au electrodes. When 325-nm wavelength light is irradiated on the HgS NPs-thin film, charge carriers are photogenerated and transported by the hopping mechanism, thereby giving birth to a photocurrent in the film. The photocurrent efficiency at a bias voltage of 5 V is estimated to be 1.6 μA/W·cm2 and the photocurrent efficiency in the 1000 cycles-bending test changes by less than one order of magnitude compared to its initial value before bending.

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2012.6229

Publication date: 2012-07-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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