Hendi Haryadi, - (2022) PENGARUH CO-DOPING Gd DAN Co TERHADAP KARAKTERISTIK FISIS KERAMIK FILM TEBAL LaFeO3 UNTUK APLIKASI SENSOR GAS ASETON. S1 thesis, Universitas Pendidikan Indonesia.
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Abstract
Sintesis dan karakterisasi keramik film tebal LaFeO3 co-doping Gd2O3 dan CoO untuk aplikasi sensor gas aseton telah dilakukan. LaFeO3 dibuat menggunakan metode kopresipitasi dengan variasi doping CoO 2.5% dan masing-masing Gd2O3 0%, 2.5%, dan 5% terhadap LaFeO3. Film tebal LaFeO3 co-doping Gd2O3 dan CoO dibuat dengan teknik screen printing dan dibakar pada suhu 8000C selama dua jam. Hasil analisis karakterisasi struktur kristal dengan menggunakan X-Ray Difrractrometry (XRD) menunjukkan bahwa LaFeO3 co-doping Gd2O3 dan CoO masing-masing memiliki fasa kubik dengan parameter kisi variasi Gd 0% a = 3.9301, Gd 2.5% a = 3.9284, dan Gd 5% a = 3.9274. Ukuran kristalit LaFeO3 dengan masing-masing konsentrasi Gd2O3, secara berurutan, memiliki nilai 64.335 nm, 68.839 nm, dan 65.752 nm. Hasil analisis karakterisasi struktur morfologi dengan menggunakan Scanning Electron Microscopy (SEM), untuk LaFeO3 dengan masing-masing konsentrasi Gd2O3 secara berurutan, mempunyai ukuran butir 0.15 μm, 0.26 μm, dan 0.16 μm. Hasil karakterisasi sifat listrik pada LaFeO3 co-doping Gd2O3 dan CoO, memiliki sensitivitas yang lebih tinggi dibandingkan dengan hanya doping CoO saja. Nilai sensitivitas maksimum LaFeO3 dengan masing-masing konsentrasi Gd2O3, secara berurutan, memiliki nilai 2.74, 3.06, dan 8.76 pada paparan 270 ppm dengan suhu operasi 310°C. Gd2O3 yang dijadikan sebagai co-doping pada LaFeO3 dengan CoO 2.5% memberikan sensitivitas yang lebih tinggi. Synthesisation and characterization of LaFeO3 with co-doping Gd2O3 and CoO thick film ceramics for acetone gas sensor was conducted. LaFeO3 was made using coprecipitation method with 2.5% CoO for each and 0%, 2.5%, and 5% Gd2O3 variation to the LaFeO3. The LaFeO3 thick film was prepared using the screen printing tehcnique and calcinated at 800°C for two hours. The analysis of crystal structure characterization using X-Ray Diffraction (XRD) resulted in LaFeO3 with co-doping Gd2O3 and CoO thick film ceramics having the same cubic crystal phase for each with Gd 0% a = 3.9301, Gd 2.5% a = 3.9284, dan Gd 5% a = 3.9274 as the lattice parameters. Crystallite size of LaFeO3 with co-doping 2.5% CoO and 0%, 2.5%, dan 5% Gd2O3, in sequential order are 64.335 nm, 68.839 nm, and 65.752 nm. The results of morphology structure characterization using Scanning Electron Microscopy (SEM) showed the grain size of the LaFeO3 with co-doping 2.5% CoO and 0%, 2.5%, dan 5% Gd2O3 samples, which ,in sequential order, are 0.15 μm, 0.26 μm, dan 0.16 μm. The electric property characterization showed that LaFeO3 with various Gd2O3 concentrations, as part of co¬-doping with 2.5% CoO, resulted in higher sensitivity compared to the lacking of Gd2O3 one. In order, the maximum sensitivity values of each Gd2O3 concentration are 2.74, 3.06, dan 8.76 when exposed to 270 ppm acetone gas at 310°C.. Gd2O3 as the part of co-doping in LaFeO3 with CoO 2.5% has succesfully increased the sensitivity to the gas sensor.
| Item Type: | Thesis (S1) |
|---|---|
| Additional Information: | Link Google Scholar: Dani Gustaman Syarif: https://scholar.google.com/citations?user=IAWfI5EAAAAJ&hl=en&oi=ao Endi Suhendi: https://scholar.google.com/citations?user=NvtEVBsAAAAJ&hl=en&oi=ao ID SINTA Dosen Pembimbing: Dani Gustaman Syarif: 6051241 Endi Suhendi: 5976806 |
| Uncontrolled Keywords: | LaFeO3, LaFeO3 co-doping Gd2O3 dan CoO, Film Tebal, Kopresipitasi, Screen Printing, Sensor Gas Aseton |
| Subjects: | L Education > L Education (General) Q Science > QC Physics |
| Divisions: | Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam > Jurusan Pendidikan Fisika > Program Studi Fisika (non kependidikan) |
| Depositing User: | Hendi Haryadi |
| Date Deposited: | 08 Sep 2022 03:21 |
| Last Modified: | 08 Sep 2022 03:21 |
| URI: | http://repository.upi.edu/id/eprint/79251 |
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