Analisis Pengaruh Treatment Fe2O3 Electron Transport Layer dan CNT Conductive Layer terhadap Performa TiO2/Fe2O3/CsPbBr3/CNT Flexible Photodiode

Virmanda, Muhammad Arkandimas (2025) Analisis Pengaruh Treatment Fe2O3 Electron Transport Layer dan CNT Conductive Layer terhadap Performa TiO2/Fe2O3/CsPbBr3/CNT Flexible Photodiode. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Indonesia memiliki potensi energi surya yang besar, mencapai 7.700 GW (10.508 TWh/tahun), namun bauran energi nasional masih didominasi oleh batu bara, sementara kontribusi energi terbarukan masih jauh dari target nasional. Sebagai langkah awal dalam mendukung transisi energi dan komitmen Net Zero Emission (NZE), pengembangan flexible photodiode berbasis material perovskite menjadi strategi menjanjikan. Photodiode fleksibel berfungsi sebagai proof of concept untuk mengevaluasi kinerja material aktif dalam mengubah cahaya menjadi energi sebelum diaplikasikan pada skala besar seperti sel surya. Penelitian ini menggunakan struktur berlapis TiO₂/Fe₂O₃/CsPbBr₃/CNT yang difabrikasi di bawah suhu 100°C pada substrat PET untuk menyesuaikan dengan batas termal material. Hasil penelitian menunjukkan bahwa penggunaan carbon nanotube (CNT) sebagai lapisan konduktif justru menurunkan kinerja perangkat. Rata-rata arus output tanpa CNT mencapai +0,0413 A/cm², tetapi menurun menjadi +0,0226 A/cm² saat CNT digunakan, mengindikasikan terbentuknya trap states pada antarmuka CNT/CsPbBr₃ yang menyebabkan rekombinasi nonradiatif. Sebaliknya, penambahan Fe₂O₃ sebagai electron transport layer (ETL) meningkatkan photocurrent, terutama pada fasa γ-Fe₂O₃ yang menghasilkan arus +0,0600 A/cm², α-Fe₂O₃ sebesar +0,0324 A/cm², dan tanpa Fe₂O₃ sebesar +0,0300 A/cm². Peningkatan ini dikaitkan dengan kecocokan band alignment antara TiO₂ dan γ-Fe₂O₃ yang memfasilitasi ekstraksi muatan secara lebih efisien.
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Indonesia possesses vast solar energy potential, reaching 7,700 GW (10,508 TWh/year). However, the national energy mix remains heavily dominated by coal, while the contribution of renewable energy is still far from the national targets. As an initial step to support energy transition and the Net Zero Emission (NZE) commitment, the development of flexible photodiodes based on perovskite materials presents a promising strategy. Flexible photodiodes serve as a proof of concept to evaluate the performance of active materials in converting light into energy before being applied at a larger scale, such as in solar cells. This study employs a layered structure of TiO₂/Fe₂O₃/CsPbBr₃/CNT, fabricated below 100°C on a PET substrate to accommodate its thermal limitations. The results show that the incorporation of carbon nanotubes (CNT) as a conductive layer actually decreases device performance. The average output current without CNT reached +0.0413 A/cm², but dropped to +0.0226 A/cm² when CNT was applied, indicating the formation of trap states at the CNT/CsPbBr₃ interface, which induce nonradiative recombination. In contrast, the addition of Fe₂O₃ as an electron transport layer (ETL) improves the photocurrent, particularly with γ-Fe₂O₃, which generated a current of +0.0600 A/cm², compared to α-Fe₂O₃ at +0.0324 A/cm² and without Fe₂O₃ at +0.0300 A/cm². This improvement is attributed to the favorable band alignment between TiO₂ and γ-Fe₂O₃, which facilitates more efficient charge extraction.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Carbon Nanotube, CsPbBr3, Fe2O3, Flexible Photodiode, TiO2,
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1087 Photovoltaic power generation
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Arkandimas Virmanda
Date Deposited:	31 Jul 2025 07:50
Last Modified:	31 Jul 2025 07:50
URI:	http://repository.its.ac.id/id/eprint/123797

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