Photocurrent Characteristics of Solution-Processed Mercury Sulfide Nanoparticles-Thin Films on Plastic Substrates
- Authors
- Kwak, Kiyeol; Cho, Kyoungah; Kim, Sangsig
- Issue Date
- Jul-2012
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Mercury Sulfide; Nanoparticles; Flexible Optoelectronics; Plastic Substrate; Photocurrent
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.12, no.7, pp.5728 - 5731
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 12
- Number
- 7
- Start Page
- 5728
- End Page
- 5731
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/108080
- DOI
- 10.1166/jnn.2012.6229
- ISSN
- 1533-4880
- 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 mu A/W . cm(2) 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.
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