Influence of Conditioning Temperature on Defects in the Double Al2O3/ZnO Layer Deposited by the ALD Method

Gawlińska-Nęcek, Katarzyna; Wlazło, Mateusz; Socha, Robert P.; Stefaniuk, Ireneusz; Major, Ł.; Pánek, P.

doi:10.3390/ma14041038

Cited by 7 publications

(7 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The peaks show a strong resemblance with Al 2 O 3 (Corundum) major‐XRD reflections, [ 64 ] and earlier studies of Al 2 O 3 films via GI‐XRD (JCPDS‐ICDD File #46‐1212). [ 65 ] The aluminum oxide thickness was determined as described in Section S2 (Supporting Information). XPS on the Teflon‐coated surface confirmed the fluorinated‐layer spectral signature reported in earlier research.…”

Section: Resultsmentioning

confidence: 99%

Laser‐Tuned Surface Wettability Modification and Incorporation of Aluminum Nitride (AlN) Ceramics in Thermal Management Devices

Mukhopadhyay,

Pal,

Sarkar

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Aluminum nitride (AlN), a versatile ceramic with high thermal conductivity, high electrical resistivity, and a coefficient of thermal expansion compatible with silicon, is well‐suited for direct‐to‐chip cooling applications of electronics, implementation in wide bandgap semiconductors, and for high‐temperature heat exchangers. Despite multiple advantages, AlN's implementation in liquid‐cooling applications is often hindered by surface‐degrading effects of working‐fluid‐induced hydrolysis. Herein, a scalable ‐but highly tunable‐ wettability engineering approach is introduced, that allows effective implementation of bulk AlN substrates in enhanced two‐phase cooling of electronics. The approach prevents hydrolysis of AlN by aqueous media and establishes control over surface roughness, all the while maintaining bulk integrity and material properties of the underlying substrate. Demonstration of the new approach is presented in spontaneous, pumpless, surface liquid transport, a necessity if such ceramics are to play an integral role as components of sealed, phase‐change, wickless thermal‐management devices (e.g., vapor chambers or heat pipes) that require rapid working‐fluid transport in their multi‐phase interior. The novelty of this work lies in establishing a scalable methodology for utilizing and further enhancing the properties of this non‐oxide ceramic material for phase‐change heat‐transfer hermetic devices, thereby paving the way toward the implementation of this intriguing material in next‐generation heat spreaders.

show abstract

Section: Resultsmentioning

confidence: 99%

Laser‐Tuned Surface Wettability Modification and Incorporation of Aluminum Nitride (AlN) Ceramics in Thermal Management Devices

Mukhopadhyay,

Pal,

Sarkar

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Figure 6 , Figure 7 and Figure 8 show the dependence of g eff as a function of temperature for the “ferromagnetic” line (g eff ≈ 5), the Pb 3+ (g eff ≈ 2), and Pb 1+ (g eff ≈ 1.1). For the EPR line with g eff ≈ 1.1, we observe the overlapping of signals from the Pb 1+ ion and various defects related to oxygen ions [ 42 ]. At lower temperatures, there is a clear separation of these lines, and for the Pb 1+ ion, we can observe a clear and narrow line (e.g., sample N150), while, in the other samples, this line is much weaker.…”

Section: Resultsmentioning

confidence: 99%

Electron Paramagnetic Resonance Study of PbSe, PbTe, and PbTe:In Semiconductors Obtained by the Pulsed Laser Deposition Method

et al. 2022

Self Cite

View full text Add to dashboard Cite

The magnetic properties of lead selenide (PbSe) and indium-doped lead telluride (PbTe:In) composites have been studied by using the electron paramagnetic resonance (EPR) technique. The samples were obtained by using the pulsed laser deposition method (PLD). Temperature dependences of the EPR spectra were obtained. The analysis of the temperature dependencies of the integral intensity of the EPR spectra was performed using the Curie–Weiss law. In these materials, the paramagnetic centers of Pb1+ and Pb3+ ions were identified. The results are discussed.

show abstract

“…Therefore, in this work were using two economically attractive Zinc-Oxide NanoRods (ZnO NR) production based on Atomic Layer Deposition (ALD) and subsequent chemical bath 59,60 . This technique allows for fabrication of oxide materials upon very large surfaces significantly reducing the fabrication costs [61][62][63][64][65] .…”

Section: Piezoelectric-based Light Conversionmentioning

confidence: 99%

ZnO nanorods as a piezoelectric energy harvester from light induced flexions

Haras¹,

Wlazło²,

Andrysiewicz³

et al. 2023

Smart Materials for Opto-Electronic Applications

View full text Add to dashboard Cite

Rapid growth is promoting the Internet of Things (IoT) to become one of the main branches of the semiconductor industry. Surprisingly, the IoT growth would have been even faster if economically attractive and reliable alternatives for batteries and wires had been available. Providing power supply to the IoT nodes is challenging regarding their: (i) quantity (close to 8x the human population), (ii) harsh operation environments, (iii) size (typical footprint much smaller than mm2) and (iv) hard-to-reach locations. Modern IoT node requires very small energy (less than 100μJ/cycle) to operate. Wire supply of energy is expensive and uncomfortable while using a battery requires periodic replacements/maintenance and produces tons of toxic waste. Energy Harvesting (EH) could be a solution to overcome the IoT supply difficulties offering self-supplied nodes enabling further IoT market growth. EH converts natural or waste energies (vibrations, heat losses, light, etc.) into useful energy. We present an innovative two-step conversion harvester capable of transforming light into electricity via the PieZoelectric (PZ) effect. Our approach uses a Photo- Mobile Polymer (PMP) integrated with the PZ material. PMP serves as light-to-movement transducer and PZ converts the light-induced PMP flexions into voltage. As a PZ material, a nanostructured ZnO nanorods were used as their fabrication is cheap and ready-to-use at industrial scale. ZnO performance characterization in a dedicated flexions simulator revealed energy as high as 80nJ during 55sec bending runs. This result encourages further PMP and ZnO optimization enabling extension of piezoelectrics onto light conversion.

show abstract

Influence of Conditioning Temperature on Defects in the Double Al2O3/ZnO Layer Deposited by the ALD Method

Cited by 7 publications

References 34 publications

Laser‐Tuned Surface Wettability Modification and Incorporation of Aluminum Nitride (AlN) Ceramics in Thermal Management Devices

Laser‐Tuned Surface Wettability Modification and Incorporation of Aluminum Nitride (AlN) Ceramics in Thermal Management Devices

Electron Paramagnetic Resonance Study of PbSe, PbTe, and PbTe:In Semiconductors Obtained by the Pulsed Laser Deposition Method

ZnO nanorods as a piezoelectric energy harvester from light induced flexions

Contact Info

Product

Resources

About