The effects of defects in purple AuAl2 thin films

Furrer, Antonia; Seita, Matteo; Spolenak, Ralph

doi:10.1016/j.actamat.2013.01.029

Cited by 15 publications

(8 citation statements)

References 28 publications

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“…The difference between measured and modeled values reflects the contribution from scattering at point defects (i.e. vacancies and incorporated Ar atoms) [46]. For the as-deposited films, the measured resistivity values of the ND-Cu and 0.05 keV IBAD-Cu films are very close to the modeled ones, indicating that these films are virtually free of point defects.…”

Section: Electrical Resistivity and Defect Concentrationmentioning

confidence: 79%

“…On the basis of the difference between the measured and modeled resistivity values, one can calculate the point defect concentration if the resistivity increment per point defect is known [46]. The values for a single vacancy and Ar atom were experimentally measured to be 1.3-1.5 Â 10 À8 Ohm m at.% À1 [47,48] and 1.74 Â 10 À8 Ohm m at.% À1 [35], respectively.…”

Section: Electrical Resistivity and Defect Concentrationmentioning

confidence: 99%

“…The resistivity of the films was modeled using the combined Fuchs-Sondheimer (FS) and Mayadas-Shatzkes (MS) method (see [46] for details), which takes into account the resistivity contribution from the grains, surface/interface and GB scattering. The measured and modeled resistivity as a function of ion beam energy is summarized in Fig.…”

Section: Electrical Resistivity and Defect Concentrationmentioning

confidence: 99%

See 2 more Smart Citations

Copper thin films by ion beam assisted deposition: Strong texture, superior thermal stability and enhanced hardness

Zou

Sologubenko

et al. 2015

Acta Materialia

Self Cite

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Section: Electrical Resistivity and Defect Concentrationmentioning

confidence: 79%

Section: Electrical Resistivity and Defect Concentrationmentioning

confidence: 99%

Section: Electrical Resistivity and Defect Concentrationmentioning

confidence: 99%

See 1 more Smart Citation

Copper thin films by ion beam assisted deposition: Strong texture, superior thermal stability and enhanced hardness

Zou

Sologubenko

et al. 2015

Acta Materialia

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“…Since sputtering causes defects in the structure, the as-sputtered films were subsequently annealed at 330°C for 10 min to reduce defects and hence to reveal color (Fig. 2), the same parameters as Furrer et al [18]. The thin film library composition was compared to the bulk samples.…”

Section: Methodsmentioning

confidence: 99%

Combinatorial exploration of color in gold-based alloys

Liu

Gong

et al. 2015

Gold Bull

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Combinatorial approaches comprised of combinatorial magnetron co-sputtering deposition and fast screening methods are introduced to study color as a function of composition in Au-based alloys. The microstructures of the thin films and bulk alloys are identified by X-ray diffraction, and their colors of the alloys are characterized by optical reflectivity. The results reveal that when comparing microstructures and reflectivity, thin films are similar to bulk alloys. In AuAg-Cu solid solutions, the color of the ternary alloy follows the rule of mixture. For colors resulting from AuAl 2 intermetallic, the color of an alloy scales with the percentage of the intermetallic phase and the deviation from its ideal binary composition. In the Au-Al-Cu library, we found a ∼90 % AuAl 2 area fraction compositional window where copper addition can be tuned to improve mechanical properties while keeping purple color, even though Al and CuAl 2 phases exist. Moreover, when comparing the color in Au-Cu-Si-Ag amorphous and crystalline state solid solution for the same composition, the colors are essentially identical.

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“…Conventional colorant-pigments have a typical intrinsic color, but they easily fade because of chemical inactivation under prolonged illumination. [11,12] The next category is a structured color filter based on surface plasmon resonance effects, which is a periodic subwavelength array of nanocavity structures that absorb visible light over a range of wavelengths. [13][14][15][16][17][18][19] The most commonly used design is metal-insulator-metal (MIM) film stacks, where the layer is nanopatterned by complicated lithographic procedures.…”

Section: Introductionmentioning

confidence: 99%

Full‐Color Reflective Filters in a Large Area with a Wide‐Band Tunable Absorber Deposited by One‐Step Magnetron Sputtering

Lyu

et al. 2019

Advanced Optical Materials

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Full‐color reflective filters for large area applications with potentially unprecedented color saturation and excellent mechanical properties deposited by one‐step magnetron sputtering are proposed. Conventional reflective color filters with multiple layers of dielectric films cannot simultaneously produce a large area and good mechanical properties due to the complex multiple depositions and the difference in the thermal expansion coefficients among the material layers. Herein, full‐spectrum colors are generated by novel Mg‐based reflective color filters in a large area of 2 cm × 2 cm with a high hardness of 9.12 GPa, where the filters include an absorber layer with controllable optical constants and a reflective layer with an amorphous structure. The saturation and hue of the produced colors can be controlled by tuning the optical constants and the thickness of the absorber layer. Additionally, the hardness of the Mg‐based reflective color filters is increased by the reflective metallic glass layers because they are derived from the same material as the absorber layer. This paradigm can pave the way for the efficient fabrication of large area color filtering devices for diverse applications, such as surface decorations, optical components, color display devices, structural color printing, and photovoltaic cells with optimum efficiency.

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The effects of defects in purple AuAl2 thin films

Cited by 15 publications

References 28 publications

Copper thin films by ion beam assisted deposition: Strong texture, superior thermal stability and enhanced hardness

Copper thin films by ion beam assisted deposition: Strong texture, superior thermal stability and enhanced hardness

Combinatorial exploration of color in gold-based alloys

Full‐Color Reflective Filters in a Large Area with a Wide‐Band Tunable Absorber Deposited by One‐Step Magnetron Sputtering

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