Tjoa, Nathasya Veronica Sanjaya (2022) Studi Komputasi Timah Selenida ( SnSe) 2-Dimensi Sebagai Kandidat Material Termoelektrik Dengan Metode Density Functional Theory. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian yang dilakukan bertujuan untuk mengetahui struktur elektronik material SnSe 2-dimensi dan sifat termoelektriknya. Dari penelitian yang telah dilakukan, diketahui material SnSe merupakan material semikonduktor dengan indirect band gap sebesar 0,93 eV. Sedangkan untuk sifat termoelektriknya, SnSe 2-dimensi mempunyai nilai ZTe, suatu parameter yang menunjukkan performa termoelektrik dari suatu material berdasarkan kontribusi elektron, sebesar 4,19. Nilai ini mengindikasikan bahwa material SnSe 2-dimensi akan baik digunakan sebagai modul termoelektrik. Pada penelitian ini, dilakukan pula strain engineering (dengan kompresi dan/atau tarikan 4%) dan penambahan doping atom (S, Te, Pb, dan Ge) pada material SnSe 2-dimensi untuk melihat perubahan performa termoelektriknya. Hasilnya, pada strain engineering dengan tarikan ke arah a dan b (biaxial) sebesar 4% didapatkan nilai ZTe meningkat hingga mencapai 7,97 pada suhu 500K. Sementara itu, pada penambahan doping, material belerang merupakan pilihan terbaik dengan meningkatkan nilai ZTe sebesar 5,23 pada suhu 500K. Kedua hasil tersebut mengindikasikan bahwa material SnSe 2-dimensi sangat menjanjikan untuk digunakan sebagai modul termoelektrik.
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This research has been carried out to investigate the electronic structures of the 2-dimensional SnSe material and its associated thermoelectric properties. For the result, it is found that SnSe is a semiconductor material with an indirect band gap of 0,93 eV. For the thermoelectric properties, the 2-dimensional SnSe has ZTe, a parameter that indicates the thermoelectric performance of material based only on the electron’s contribution, of 4,19. This value indicates that the 2-dimensional SnSe material is suitable for a thermoelectric module. Furthermore, strain engineering (with the compression and/or the expansion of 4%) and atomic doping (S, Te, Pb, and Ge) have been applied to the 2-dimensional SnSe material for the sake of finding an improved thermoelectric performance. As a result, under the expansion along a and b (biaxial) direction by 4%, ZTe increases up to 7,97 at 500K. And, by adding sulfur atoms as a dopant for the 2-dimensional material, ZTe is enhanced up to 5,23 at 500K. Overall, from the result, it is suggested that the 2-dimensional SnSe could be a promising thermoelectric material.
| Item Type: | Thesis (Other) |
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| Uncontrolled Keywords: | DFT, Doping, Strain Engineering, Termoelektrik, Timah Selenida, Atomic Doping, Strain Engineering, Thermoelectric, Tin Selenide |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 16 Dec 2025 10:18 |
| Last Modified: | 16 Dec 2025 10:18 |
| URI: | http://repository.its.ac.id/id/eprint/129005 |
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