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All Journal Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Jurnal Ilmiah Pendidikan Fisika Journal of Advanced Sciences and Mathematics Education Wahana Fisika : Jurnal Fisika dan Terapannya
Andhy Setiawan
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Astronomy Chemistry Earth & Planetary Sciences Education Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Review of Synthesis Cu2ZnSnS4 Using Ball-Milling Method as Thin Film Solar Cell Absorber Layer Maghfirani Aulia Rachman; Eka Cahya Prima; Andhy Setiawan
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 9, No 1 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v9i1.12348

Abstract

CZTS (Cu2ZnSnS4) is a readily available, cost-effective, and non-toxic material that uses as a material for absorbing coatings on solar cells. This study aims to examine making CZTS using the Ball-milling method. This method uses a cylindrical grinding machine to reduce coarse materials into more delicate fabrics. The CZTS synthesis process using ball-milling produces better results than other non-sputtering methods. In addition, the synthesis of CZTS using ball-milling can increase the yield of better solar cells. However, in ball-milling, there are still shortcomings, one of which is the presence of heterogeneous elements after the synthesis.
Pengaruh Penambahan Rgo Pada Lafeo3 Yang Didoping Co Terhadap Energi Adsorpsi Molekul Etanol Menggunakan Density Functional Theory Untuk Sensor Gas Alta Ridho Anugrah; Andhy Setiawan; Yuyu Rachmat Tayubi; Ahmad Aminudin; Lilik Hasanah; Siti Kudnie Sahari; Endi Suhendi
Wahana Fisika Vol 8, No 2 (2023): December
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v8i2.62210

Abstract

LaFeO3 (LFO) material has been widely used as a gas sensor construction material. Although LFO has been widely applied to gas sensors, the selectivity and sensitivity as well as the working temperature of gas sensors are still not optimal. In this study, the LFO was Co-doped and coated with single layer rGO to analyze its sensitivity and selectivity based on adsorption energy using Density Functional Theory (DFT). Based on this research, it was found that the presence of Co doping and rGO coating could increase the adsorption energy on the LFO. The addition of the rGO layer to the LFO increased the adsorption energy by 23.58% from -2.38 eV for Co-doped LFO to -2.93 eV when rGO was added. This shows the potential of adding rGO layers to LFO materials for sensor materials.
Advancement of Conceptual Change in Physics Education from 2018-2024: A Literature Review Siska Dewi Aryani; Hera Novia; Andhy Setiawan; Achmad Samsudin
Jurnal Ilmiah Pendidikan Fisika Vol 8, No 2 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jipf.v8i2.12346

Abstract

Conceptual change (CC) occurs when students move from incorrect to scientifically accepted ideas. This article presents an overview of 47 international journal articles on the journal index, theoretical framework, purpose, data analysis, and research recommendations published between 2018-2024. This review resulted in five statements: 1) indexation of the journal used by the source of conceptual change studies; 2) the theoretical framework utilized in conceptual change; 3) the objectives used in conceptual change research; 4) data analysis used in research methodology; and 5) recommendations for various studies used by researchers to develop further. Based on this study, the authors recommend future empirical studies related to using a more specific theoretical framework in intervention learning, exploring deeper conceptual changes in the affective and social domains and examining the relationship between the role of metacognitive strategies and conceptual change.
Design and psychometric validation of a metacognitive instrument for physics learning: A focus on heat concepts Novia, Hera; Siska Dewi Aryani; Andhy Setiawan; Zahran, Muhammad
Journal of Advanced Sciences and Mathematics Education Vol. 5 No. 2 (2025): Journal of Advanced Sciences and Mathematics Education
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jasme.v5i2.818

Abstract

Background: Metacognitive knowledge, awareness of one's own cognition, tasks, and learning strategies, is critical for independent learning but is often underemphasized in physics education. Aim: This study aimed to develop and validate a questionnaire to measure high school students’ metacognitive knowledge within the specific context of physics, focusing on the topic of heat. Method: The research involved content validation by six physics education experts and construct validation through empirical testing with 163 high school students. Content validity was established using Aiken’s V, while construct validity and reliability were evaluated using Rasch model analysis. Results: The final instrument consisted of 28 items, of which 26 met the Rasch model fit criteria. The analysis confirmed high person reliability (0.82) and item reliability (0.98), indicating strong internal consistency and measurement stability. Conclusion: The findings support the questionnaire's validity and reliability as a tool for assessing metacognitive knowledge in physics. This validated instrument provides a foundation for future research and instructional practices aimed at enhancing students' metacognitive skills
Co-Authors Achmad Samsudin Ahmad Aminudin Alta Ridho Anugrah Eka Cahya Prima Endi Suhendi Hera Novia Hera Novia Lilik Hasanah Maghfirani Aulia Rachman siska dewi aryani Siti Kudnie Sahari Yuyu Rachmat Tayubi Zahran, Muhammad