Sakulkalavek, Aparporn
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Preferred name
Sakulkalavek, Aparporn
Alternative Name
Sakulkalavek, A.
Sakulkalavek, Aparpron
Main Affiliation
Email
aparporn.sa@kmitl.ac.th
85 results
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Item type:Publication, Figures of merit of low-cost CuAl0.9Fe0.1O2 thermoelectric material prepared at different solid state reaction sintering temperatures(2015-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of annealing temperature on thermoelectric properties of bismuth telluride thick film deposited by DC magnetron sputtering(2020-07-15); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Achieving thermoelectric improvement through the addition of a small amount of graphene to CuAlO2 synthesized by solid-state reaction(2018-07-15); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Role of anharmonicity in phonon-mediated superconductivity of quasi- van der Waals layered XP2 (X = As, Sb, Bi) structures: Insight from first-principles calculations(2023-10-10); Inceesungvorn, BurapatIt is of utmost importance to prioritize the undertaking of investigating superconductivity, as it represents one of the most intriguing and significant phenomena in the field of condensed matter physics. Our research endeavors to shed light on the metallic state of van der Waals layered XP<inf>2</inf> (X = As, Sb, Bi) structures, which is crucial in predicting their superconducting properties. Employing a first-principle evolutionary algorithm, we predicted the structures of phosphides, including AsP<inf>2</inf>, SbP<inf>2</inf>, and BiP<inf>2</inf>, and determined their energetically stable configurations under atmospheric pressure. To investigate the potential for superconductivity in these structures, we conducted a thorough examination of relevant electronic properties. One of the crucial factors we addressed was the role of anharmonic phonon properties in determining the superconducting state in van der Waals layered structures. Our findings suggest that the introduction of anharmonicity can significantly suppress the superconducting abilities of such structures. Hence, the anharmonicity present in AsP<inf>2</inf>, SbP<inf>2</inf>, and BiP<inf>2</inf> could be held accountable for the lower observed superconducting critical temperature in these van der Waals layered structures. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Role of Lifshitz transition stabilized carbon hexagon structure from biaxial strain: A case of sodium carbide with superconducting condition(2023-06-15) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Figure of merit improvement of delafossite CuAlO2 with the addition of Fe and graphene(2019-11-01); This study investigated the synthesis of delafossite CuAlO<inf>2</inf> with Fe and graphene through a solid-state reaction method. The results of X-ray diffractometry showed that graphene was insoluble in delafossite CuAlO<inf>2</inf> while Fe was substituted into Al sites, expanding the d-spacing. From X-ray photoelectron spectroscopy, graphene induced excess oxygen in the delafossite CuAlO<inf>2</inf> structure via C–O–Cu bonds and improved the electrical conductivity. In addition, the thermal conductivity was reduced due to generation of point defects, phonon-phonon Umklapp and carrier-phonon scattering. The addition of Fe and graphene in CuAlO<inf>2</inf> shows an improvement of ZT to 0.0114 at 573 K. This is attributable to its increase in charge carrier density, as well as a decrease in thermal conductivity. This study highlights the benefits of combining Fe and graphene in delafossite CuAlO<inf>2</inf> as a prospective process for attaining a high figure of merit thermoelectric materials. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effects of iron doping on the oxidation/reduction properties of delafossite CuAlO2 synthesized via a solid-state reaction(2020-06-01); CuAlO<inf>2</inf> has received a wealth of interdependent research associated with hydrogen-based catalysis in the chemical industry. Herein, Fe-doped CuAlO<inf>2</inf> is demonstrated to reduce the redox temperature for delafossite CuAlO<inf>2</inf>. Time-resolved X-ray absorption spectroscopy and hydrogen temperature-programmed reduction were used to characterize the redox properties, respectively. Delafossite CuAlO<inf>2</inf>, with and without Fe doping at 10 at% (CuAl<inf>0.9</inf>Fe<inf>0.1</inf>O<inf>2</inf>), was synthesized via a one-step solid-state reaction method. The results demonstrate that the redox temperature can be reduced by ~ 60 K for the 10 at% Fe-doped catalyst. The findings of this contribution offer a new approach to circumvent the high temperatures associated with the redox processes, and furthermore, offer a design basis for the development of new catalyst systems with enhanced regeneration abilities. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Enhanced thermoelectric properties of bismuth telluride via Ultra-Low thermal conductivity BOSC compound addition(2024-12-01); ; This study aimed to enhance the thermoelectric properties of bismuth telluride by adding Bi<inf>4</inf>O<inf>4</inf>SeCl<inf>2</inf> (BOSC). Commercial N-type bismuth telluride was mixed with BOSC powder in varying concentrations. As the BOSC content increased, the carrier concentration also rose due to chlorine atoms acting as donor impurities. Despite this increase, the power factor values of the samples with BOSC additives did not significantly differ from those of the bare bismuth telluride sample. However, the total thermal conductivity decreased significantly with the addition of BOSC, reaching a minimum value of 0.54 W·m<sup>–1</sup>·K<sup>–1</sup> at 150 °C for the sample with 1 wt% BOSC. Notably, the ZT value for the sample with 1 wt% BOSC was about 0.86, which is four times higher than that of the bare bismuth telluride sample. Our findings demonstrate superior thermoelectric performance, indicating a more efficient modification of thermoelectric properties through the addition of BOSC to the bismuth telluride matrix. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Role of Cu Substitute in AgGaTe2 in Structural Stabilities, Electronic Property, and High-Pressure Phase Transitions: A DFT Investigation(2025-06-19) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Strong electron–phonon coupling and predicted high superconducting transition temperature of MXenes revealed in 2H-Mo2N under biaxial stress(2024-12-15);