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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 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).The mean crystallite sizes remain in the range of 15 - 20 nm when grown onto a CIS film.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.


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XRD patterns of Au-NP/CIS nanocomposite films. Au nanoparticles are prepared by spray of 2.5, 5, and 15 ml of 2 mM HAuCl4 aqueous solution at 340°C. CIS was grown by spray onto the Au-NP layer at 310°C.
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Fig2: XRD patterns of Au-NP/CIS nanocomposite films. Au nanoparticles are prepared by spray of 2.5, 5, and 15 ml of 2 mM HAuCl4 aqueous solution at 340°C. CIS was grown by spray onto the Au-NP layer at 310°C.

Mentions: Figure 2 presents the XRD patterns of Au-NP/CIS films (see Figure 1a). The diffraction peaks at 2θ of 38.2° and 44.4° correspond to the reflections from the (111) and (200) planes of metallic Au with cubic structure (PDF 00-004-0784) [24]. Thus, the spray of HAuCl4 aqueous solution at 340°C results in metallic Au phase which according to the SEM study is a layer of nanoparticles (see Figure 3). The formation of metallic gold particles is in good correlation with that reported in literature [15]. The intensities of XRD peaks characteristic of Au are increasing with the solution amount sprayed. The mean crystallite size of Au particles varies slightly, from 36 to 30 nm with no correlation when spraying 2.5 or 15 ml of Au solution (see Table 1). The height of the (112) diffraction peak of CuInS2 is similar in all Au-NP/CIS films which could be expected since a similar amount (5 ml) of CIS precursor solution was sprayed.Figure 2


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)

XRD patterns of Au-NP/CIS nanocomposite films. Au nanoparticles are prepared by spray of 2.5, 5, and 15 ml of 2 mM HAuCl4 aqueous solution at 340°C. CIS was grown by spray onto the Au-NP layer at 310°C.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4493990&req=5

Fig2: XRD patterns of Au-NP/CIS nanocomposite films. Au nanoparticles are prepared by spray of 2.5, 5, and 15 ml of 2 mM HAuCl4 aqueous solution at 340°C. CIS was grown by spray onto the Au-NP layer at 310°C.
Mentions: Figure 2 presents the XRD patterns of Au-NP/CIS films (see Figure 1a). The diffraction peaks at 2θ of 38.2° and 44.4° correspond to the reflections from the (111) and (200) planes of metallic Au with cubic structure (PDF 00-004-0784) [24]. Thus, the spray of HAuCl4 aqueous solution at 340°C results in metallic Au phase which according to the SEM study is a layer of nanoparticles (see Figure 3). The formation of metallic gold particles is in good correlation with that reported in literature [15]. The intensities of XRD peaks characteristic of Au are increasing with the solution amount sprayed. The mean crystallite size of Au particles varies slightly, from 36 to 30 nm with no correlation when spraying 2.5 or 15 ml of Au solution (see Table 1). The height of the (112) diffraction peak of CuInS2 is similar in all Au-NP/CIS films which could be expected since a similar amount (5 ml) of CIS precursor solution was sprayed.Figure 2

Bottom Line: 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).The mean crystallite sizes remain in the range of 15 - 20 nm when grown onto a CIS film.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.


Related in: MedlinePlus