Optical constants and film density of TiN<i>x</i>O<i>y</i> solar selective absorbers

Lazarov, Michel P.; Raths, P.; Metzger, H.; Spirkl, W.

doi:10.1063/1.358790

Cited by 63 publications

(17 citation statements)

References 20 publications

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“…Lazarov et al reported that TiO x N y thin films deposited on copper exhibited excellent solar selective properties [12,13] tandem absorbers [16]. We have reported the solar-absorbing coating based on TiAlON/TiAlN with regard to its colored appearance as energy-saving materials used in buildings [17].…”

Section: Introductionmentioning

confidence: 97%

The influence of oxygen in TiAlOxNy on the optical properties of colored solar-absorbing coatings

Zhu

Mao

Zhao

2012

Solar Energy Materials and Solar Cells

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Abstract:Low cost and ease of fabrication are important factors for solar-thermal applications in energyefficient buildings. This contribution reports the influence of oxygen on structure, optical properties and chromaticity of TiAlO x N y thin films prepared by DC magnetron sputtering. It is an extension of a previous study on colored solar-thermal absorbers based on titanium-aluminum nitride. The purpose is to investigate the possibility of using TiAlO x N y as middle layer to achieve a gradient effect.The results reveal that the structure and optical properties of the TiAlO x N y coatings are sensitive to the oxygen content under certain sputtering conditions. The ratio of oxygen/nitrogen of 0.7:10 is the most appropriate to form the crystalline structure of TiAlON. The optical constants of TiAlN and TiAlON were deduced by fitting the experimental data. It shows that both the refractive index (n) and the extinction coefficient (κ) are decreased when oxygen is introduced to form titanium-aluminium nitro-oxide. The gradient effect can be achieved and controlled by adjusting the ratio of oxygen/nitrogen flow during the process to enhance solar absorptance while keeping the desired color appearance.

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Section: Introductionmentioning

confidence: 97%

The influence of oxygen in TiAlOxNy on the optical properties of colored solar-absorbing coatings

Zhu

Mao

Zhao

2012

Solar Energy Materials and Solar Cells

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“…Recently, interest in titanium oxynitride films has increased and have been extensively studied due to their improved physical and chemical properties, which mainly depend on their N/O ratio. Oxygen-rich TiN x O y films have been used as insulating layer in metal-insulator-metal (MIM) capacitive structures to avoid interfacial oxide layer formation [11], while nitrogen-rich TiN x O y films have been used as an excellent diffusion barrier layer for semiconductor applications [12]; Additionally, many other useful applications of TiN x O y films, such as anti-reflective coating [13] and biomaterials [14] solar selective absorbers [15] and wearresistant coatings [16], have been demonstrated. The wettability studies to determine hydrophilic or hydrophobic nature of titanium oxynitride film are the area that is unexplored and no literature has been found regarding the investigation of this property so far.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Structural and electrochemical impedance spectroscopic studies on reactive magnetron sputtered titanium oxynitride (TiON) thin films

Padmavathy¹,

Subramanian

Ravidhas³

et al. 2011

J Appl Electrochem

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Titanium oxynitride films were deposited onto commercially pure titanium substrates by direct current reactive magnetron sputtering method using Ti targets and an Ar-N 2 -O 2 mixture discharge gas. The X-ray photoelectron spectroscopy survey spectra on the etched surfaces of TiON films exhibited the characteristic Ti 2p, N 1s, and O 1s peaks at the corresponding binding energies 454.5, 397.0, and 530.7 eV, respectively. The surface topography of these coatings was studied using atomic force microscopy. The characteristic Raman peaks at 200 and 641 cm -1 for the TiN bonds and at 148, 398 ,and 518 cm -1 for the TiO 2 bonds were observed from the Laser Raman spectrometer. The potentiodynamic polarization studies in simulated bodily fluid were performed and the results are reported in this article.

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“…[3,4] Moreover, the presence of oxygen in titanium nitride films leads to a promising functional range of materials, TiN x O y , already used as solar selective absorbers, [5] or transparent windows for infrared detectors. [6,7] However, few works have been published on the growth, structure, and properties of these titanium oxynitride films.…”

Section: Introductionmentioning

confidence: 99%

Correlation Between the Electrical Properties and the Morphology of Low-Pressure MOCVD Titanium Oxynitride Thin Films Grown at Various Temperatures

Fabreguette

Imhoff

Maglione

et al. 2000

Chem. Vap. Deposition

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Titanium oxynitride (TiN x O y ) thin films were deposited by low-pressure metal±organic CVD (LP-MOCVD) on (100) silicon, sapphire, and polycrystalline alumina substrates. Titanium isopropoxide (TIP) and ammonia were used as precursors. The influence of the growth temperature, ranking from 450 C to 750 C, was investigated by scanning electron microscopy (SEM), and electrical DC measurements. Rutherford back-scattering (RBS) measurements were used to determine the N/O ratio in the films. The surface observations of the deposited films showed two morphological transitions. The resistivity decreased with the growth temperature, while the nitrogen content increased. Moreover, for the highest deposition temperatures, the temperature dependence of the resistivity revealed a transition from a semiconducting to a metallic behavior. Finally, these electrical properties were correlated with the two morphological transitions.

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Optical constants and film density of TiNxOy solar selective absorbers

Abstract: Articles you may be interested inInvestigation of temperature dependent dielectric constant of a sputtered TiN thin film by spectroscopic ellipsometry

Cited by 63 publications

References 20 publications

The influence of oxygen in TiAlOxNy on the optical properties of colored solar-absorbing coatings

The influence of oxygen in TiAlOxNy on the optical properties of colored solar-absorbing coatings

RETRACTED ARTICLE: Structural and electrochemical impedance spectroscopic studies on reactive magnetron sputtered titanium oxynitride (TiON) thin films

Correlation Between the Electrical Properties and the Morphology of Low-Pressure MOCVD Titanium Oxynitride Thin Films Grown at Various Temperatures

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