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Electronic properties and bonding characteristics of AlN:Ag thin film nanocomposites
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Electronic density of states: (a) Wurtzite AlN, (b) AlN with an Ag atom in an Al site, (c) AlN with an Ag atom in an N site, and (d) AlN with an icosahedral Ag nanocluster. The electronic contributions of N, Al and Ag are indicated by arrows.

Image of FIG. 2.
FIG. 2.

(Color online) Wavefunctions at the Γ k-point: (a) Ag in Al site, (b) Ag in N site, (c) and (d) AlN:Ag13 energy states of Regions (ii) and (iii) Ag, Al and N atoms are represented by large, medium and small spheres, respectively.

Image of FIG. 3.
FIG. 3.

The AES AlLVV peak for: (a) a pure AlN, and (b) a composite AlN:Ag film; the vertical dotted lines indicate the spectral shift. (c) Details of the AES spectra around the minima of the spectra, which more accurately demonstrate the spectral shifts due to Al-N and Al-Ag bonding.

Image of FIG. 4.
FIG. 4.

(Color online) (a) Cross-section HRTEM image from an AlN:Ag nanocomposite film deposited on the (100) Si substrate illustrating a high density of Ag inclusions embedded in the AlN matrix. {111} lattice fringes of fcc Ag are identified in nanocrystals indicated by a hexagon drawn around them. (b) An enlarged view of the large Ag nanocrystal indicated in (a).

Image of FIG. 5.
FIG. 5.

(Color online) XRD patterns from the pure Wurtzite AlN film (high intensity) and the Wurtzite AlN with atomically dispersed Ag. Both films are polycrystalline.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electronic properties and bonding characteristics of AlN:Ag thin film nanocomposites