Karakterisasi Larutan Karbon Amorf Intrinsik Berbasis Nira Siwalan Menggunakan Variasi Temperatur Karbonasi Dan Lama Pemanasan Untuk Aplikasi Sel Fotovoltaik

Aurellia, Elliyin Beryl (2023) Karakterisasi Larutan Karbon Amorf Intrinsik Berbasis Nira Siwalan Menggunakan Variasi Temperatur Karbonasi Dan Lama Pemanasan Untuk Aplikasi Sel Fotovoltaik. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian yang berjudul “Karakterisasi Larutan Karbon Amorf Intrinsik Berbasis Nira Siwalan Menggunakan Variasi Temperatur Karbonasi dan Lama Pemanasan Untuk Aplikasi Sel Fotovoltaik” dilakukan dengan tujuan untuk mengetahui pengaruh temperatur karbonasi dan lama pemanasan terhadap parameter absorbansi, energi celah pita optik, energi Urbach, konduktivitas listrik dan ukuran partikel terlarut pada bahan karbon nira siwalan. Sintesis serbuk karbon amorf dilakukan dengan cara pemanasan pada temperatur 250°C selama 2,5 jam kemudian dilanjutkan dengan pemanasan kedua menggunakan variasi temperatur 300°C dan 400°C dan lama pemanasan 1,5, 2,5 dan 5 jam untuk masing-masing variasi temperatur. Karakterisasi yang dilakukan antara lain yaitu pengujian X-Ray Diffraction, UV-Vis, dan Konduktometer. Berdasarkan pengujian yang dilakukan Dalam penelitian ini melalui pengujian XRD diketahui bahwa fasa karbon nira siwalan tergolong amorf berdasarkan puncak lebar difraksi pada posisi 18,42˚ pada 2θ. Hasil UV-Vis menghasilkan kurva dengan rentang puncak 280 -333 nm pada temperatur 300 ˚C dan 284 nm pada temperatur 400˚C dengan tidak ditemuinya pergeseran nilai puncak, nilai Energi Urbach dalam rentan 0,05 -0,09 eV, dan nilai energi celah sebesar 1,59 eV-1,72 eV. Nilai energi Urbach menunjukan bahwa semakin lama pemanasan dan temperature maka bahan semakin amorf. Semakin tinggi temperatur dan lama pemanasan menunjukan semakin turun nilai energi celah. Pengaruh temperatur berbanding lurus dengan nilai konduktivitas, dan nilai konduktivitas berbanding terbalik dengan energi celah, semakin kecil nilai energi celah semakin konduktif. Dalam penelitian ini diperoleh nilai konduktivitas sebesar 113-198 mS/cm.
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The research entitled “Characterization of Intrinsic Amorphous-Carbon Solution Based on Palmyra Sap using Variations of Carbonation Temperature and Heating Time for Photovoltaik Applications” was carried out with the aim of knowing the effect of carbonation temperature and heating time on absorbance parameters, optical bandgap energy, Urbach energy, and electrical conductivity and of dissolved particles in carbon solutions. Synthesis of amorphous carbon powder was carried out by heating at 250oC for 2.5 hours then followed by a second heating using temperature variations of 300 and 400 oC and heating time of 1,5, 2,5,and 5 hours for each temperature variation. Carbon powders were washed after the first heating to dissolve the KCl contained in the carbon. The sieving process using a 400mesh filter was also carried out to obtain homogeneous carbon powders so that they were more easily dissolved. The second heating to obtain an amorphous carbon phase. The amorphous carbon powder was then dissolved into an intrinsic amorphous-carbon solution using H2O and DMSO in a 1:1 ratio. To obtain a homogeneous solution, a stirring process was carried out using a magnetic stirrer for 1 hour and an ultrasonication process was carried out to exfoliate carbon sheets for 2 hours, and a centrifuge process was performed to separate solutions and precipitates. The results of the UV-Vis Spectroscopy test were processed using the Tauc-plot method with the help of Origin software so that the results were obtained in the form of graphs of gap energy values and Urbach energy. To determine the conductivity value of the intrinsic solution of amorphous carbon is carried out using a conductometer test, and X-ray Diffraction (XRD) testing is also conducted to determine the amorphous phase in carbon powder.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Amorphous carbon, Intrinsic solution, PSA, UV-Vis, XRD, Karbon amorf, Larutan intrinsik, PSA, UV-Vis, XRD
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Elliyin Beryl Aurellia
Date Deposited:	30 Aug 2023 02:14
Last Modified:	30 Aug 2023 02:14
URI:	http://repository.its.ac.id/id/eprint/103309

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