Analisis Pengaruh Ion Cl- Dalam Kestabilan Performa Dan Sifat Optoelektronik Pada Fabrikasi Perovskite (Fa,Cs)Sni3-Xclx Menggunakan Agen Stabiliasi Asam Askorbat

Nusantara, Wahyu Satria (2025) Analisis Pengaruh Ion Cl- Dalam Kestabilan Performa Dan Sifat Optoelektronik Pada Fabrikasi Perovskite (Fa,Cs)Sni3-Xclx Menggunakan Agen Stabiliasi Asam Askorbat. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sel surya berbasis silikon yang umum digunakan memiliki tantangan seperti biaya produksi tinggi dan proses manufaktur kompleks. Oleh karena itu, dikembangkan sel surya perovskit sebagai alternatif karena efisiensi tinggi serta biaya produksi yang lebih rendah. Namun, penggunaan timbal (Pb) dalam perovskit menimbulkan masalah toksisitas dan dampak lingkungan. Sebagai penggantinya, perovskit berbasis timah (Sn) diusulkan, meskipun memiliki tantangan utama berupa kestabilan rendah akibat oksidasi ion Sn²⁺ menjadi Sn⁴⁺ dalam kondisi udara bebas. Pada penelitian ini film perovskite Cl- ditambahkan sebagai substituen pada perovskite FACsSnI3-xClx dengan variasi (x = 0, 1, 2) dicampurkan dengan pelarut DMF dan deposisi menggunakan metode drop casting pada suhu ruang (25°C ± 2°C ) serta rekayasa anti pelarut dengan penambahan Asam Askorbat 10% dan 20%. Hasilnya menunjukkan bahwa penambahan AA 20% memberikan perlindungan optimal terhadap degradasi. Pada sampel FACI-0-20, nilai celah pita direct sebesar 1,23 eV bertahan hingga hari ketiga pada 1,33 eV, dengan dominasi fasa double perovskite (FA₀.₅Cs)₂SnI₆ sebesar 55%, yang mengindikasikan degradasi berlangsung cepat pada fasa perovskite (FA0.5Cs0.5)SnI3. Pada sampel FACI-1-20, penambahan Cl- berbanding I⁻ sebesar 2:1 menunjukkan kestabilan lebih baik dengan celah pita direct 1,22 eV yang bertahan hingga hari ketujuh pada 1,70 eV, dan dominasi fasa perovskite (FA0.5Cs0.5)SnI2Cl sebesar 58% . Sebaliknya, pada sampel dengan Cl- berbanding I⁻ sebesar 1:2 didapatkan celah pita indirect sebesar 2,2 eV dan hanya bertahan tiga hari, dengan dominasi fasa double perovskite (FA0.5Cs)2SnI2Cl4 sebesar 67%, yang menandakan degradasi pada perovskit berlangsung sangat cepat
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Commonly used silicon-based solar cells have challenges such as high production costs and complex manufacturing processes. Therefore, perovskite solar cells were developed as an alternative due to their high efficiency and lower production costs. However, the use of lead (Pb) in perovskites raises toxicity and environmental impact issues. As a replacement, tin (Sn)-based perovskites were proposed, although they have the main challenge of low stability due to the oxidation of Sn²⁺ ions to Sn⁴⁺ in free air conditions. In this study, Cl- perovskite films were added as a substituent to FACsSnI3-xClx perovskite with variations (x = 0, 1, 2) mixed with DMF solvent and deposition using the drop casting method at room temperature (25°C ± 2°C) as well as anti-solvent engineering by adding 10% and 20% Ascorbic Acid. The results showed that the addition of 20% AA provided optimal protection against degradation. In the FACI-0-20 sample, the direct band gap value of 1.23 eV persisted until the third day at 1.33 eV, with the dominance of the double perovskite phase (FA₀.₅Cs)₂SnI₆ of 55%, which indicates rapid degradation of the perovskite phase (FA0.5Cs0.5)SnI3. In the FACI-1-20 sample, the addition of Cl- compared to I⁻ of 2:1 showed better stability with a direct band gap of 1.22 eV that persisted until the seventh day at 1.70 eV, and the dominance of the perovskite phase (FA0.5Cs0.5)SnI2Cl of 58%. On the other hand, in the sample with Cl- compared to I⁻ of 1:2, an indirect band gap of 2.2 eV was obtained and only lasted three days, with a dominance of the double perovskite phase (FA0.5Cs)2SnI2Cl4 of 67%, which indicates that the degradation of the perovskite is very fast.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Band Gap, Tin Halide Perovskite, Perovskite FACsSnI3-xClx, Cloride Ion Celah pita , Perovskite Timah Halida, Perovskite FACsSnI3-xClx, Ion Klorida
Subjects:	Q Science > QC Physics > QC100 Crystals. Q Science > QC Physics > QC451 Spectroscopy
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Wahyu Satria Nusantara
Date Deposited:	30 Jul 2025 01:32
Last Modified:	30 Jul 2025 01:32
URI:	http://repository.its.ac.id/id/eprint/123852

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