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Modification of light absorption in thin CuInS2 films by sprayed Au nanoparticles.

Katerski A, Kärber E, Acik IO, Dolgov L, Mere A, Sildos I, Mikli V, Krunks M - Nanoscale Res Lett (2014)

Bottom Line: The prepared films show plasmonic light absorption with increasing intensity in the spectral range of 500- 800 nm when increasing the volume of HAuCl4 solution sprayed.When compared to bare CIS on glass, the absorptance was increased ca. 4.5 times in the case of glass/Au-NP/CIS and ca. 3 times in the case of glass/CIS/Au-NP configuration.The glass/Au-NP/CIS configuration had an advantage since Au-NP could be embedded without chemically damaging the CIS.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Thin Film Chemical Technologies, Department of Materials Science, Tallinn University of Technology, Tallinn, EE-19086, Estonia, atanas.katerski@ttu.ee.

ABSTRACT
The chemical spray pyrolysis method was used to deposit CuInS2 (CIS) thin films and Au nanoparticles (NPs) in two configurations: glass/Au-NP layer covered with CuInS2 film (Au-NP/CIS) and glass/CuInS2 films covered with Au-NP layer (CIS/Au-NP). According to X-ray diffraction (XRD), the spray of 2 mM HAuCl4 aqueous solution with a volume of 2.5 to 15 ml onto a glass substrate at 340°C results in metallic Au nanoparticles with a similar mean crystallite size in the range of 30 - 38 nm. The mean crystallite sizes remain in the range of 15 - 20 nm when grown onto a CIS film. The prepared films show plasmonic light absorption with increasing intensity in the spectral range of 500- 800 nm when increasing the volume of HAuCl4 solution sprayed. When compared to bare CIS on glass, the absorptance was increased ca. 4.5 times in the case of glass/Au-NP/CIS and ca. 3 times in the case of glass/CIS/Au-NP configuration. The glass/Au-NP/CIS configuration had an advantage since Au-NP could be embedded without chemically damaging the CIS.

No MeSH data available.


Sketches of Au nanoparticle (NP) and CuInS2(CIS) nanocomposite film configurations. (a) Glass/Au-NP/CIS and (b) glass/CIS/Au-NP.
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Fig1: Sketches of Au nanoparticle (NP) and CuInS2(CIS) nanocomposite film configurations. (a) Glass/Au-NP/CIS and (b) glass/CIS/Au-NP.

Mentions: The composite samples that consisted of Au-NPs and the CIS were prepared in two configurations (Figure 1). For the bottom configuration (Figure 1a), the Au-NP layer was deposited firstly onto a soda-lime glass followed by the deposition of the CIS thin film. For the top configuration (Figure 1b), the CIS thin film was deposited firstly followed by the deposition of Au nanoparticles.Figure 1


Modification of light absorption in thin CuInS2 films by sprayed Au nanoparticles.

Katerski A, Kärber E, Acik IO, Dolgov L, Mere A, Sildos I, Mikli V, Krunks M - Nanoscale Res Lett (2014)

Sketches of Au nanoparticle (NP) and CuInS2(CIS) nanocomposite film configurations. (a) Glass/Au-NP/CIS and (b) glass/CIS/Au-NP.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
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getmorefigures.php?uid=PMC4493990&req=5

Fig1: Sketches of Au nanoparticle (NP) and CuInS2(CIS) nanocomposite film configurations. (a) Glass/Au-NP/CIS and (b) glass/CIS/Au-NP.
Mentions: The composite samples that consisted of Au-NPs and the CIS were prepared in two configurations (Figure 1). For the bottom configuration (Figure 1a), the Au-NP layer was deposited firstly onto a soda-lime glass followed by the deposition of the CIS thin film. For the top configuration (Figure 1b), the CIS thin film was deposited firstly followed by the deposition of Au nanoparticles.Figure 1

Bottom Line: The prepared films show plasmonic light absorption with increasing intensity in the spectral range of 500- 800 nm when increasing the volume of HAuCl4 solution sprayed.When compared to bare CIS on glass, the absorptance was increased ca. 4.5 times in the case of glass/Au-NP/CIS and ca. 3 times in the case of glass/CIS/Au-NP configuration.The glass/Au-NP/CIS configuration had an advantage since Au-NP could be embedded without chemically damaging the CIS.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Thin Film Chemical Technologies, Department of Materials Science, Tallinn University of Technology, Tallinn, EE-19086, Estonia, atanas.katerski@ttu.ee.

ABSTRACT
The chemical spray pyrolysis method was used to deposit CuInS2 (CIS) thin films and Au nanoparticles (NPs) in two configurations: glass/Au-NP layer covered with CuInS2 film (Au-NP/CIS) and glass/CuInS2 films covered with Au-NP layer (CIS/Au-NP). According to X-ray diffraction (XRD), the spray of 2 mM HAuCl4 aqueous solution with a volume of 2.5 to 15 ml onto a glass substrate at 340°C results in metallic Au nanoparticles with a similar mean crystallite size in the range of 30 - 38 nm. The mean crystallite sizes remain in the range of 15 - 20 nm when grown onto a CIS film. The prepared films show plasmonic light absorption with increasing intensity in the spectral range of 500- 800 nm when increasing the volume of HAuCl4 solution sprayed. When compared to bare CIS on glass, the absorptance was increased ca. 4.5 times in the case of glass/Au-NP/CIS and ca. 3 times in the case of glass/CIS/Au-NP configuration. The glass/Au-NP/CIS configuration had an advantage since Au-NP could be embedded without chemically damaging the CIS.

No MeSH data available.