Amorphous carbon thin films have been successfully deposited using the Chemical Vapor Deposition (CVD) technique with various amounts of natural oyster mushroom (P.ostreatus) waste oil as carbon precursors onto the glass substrates. This study examined the impact of varying precursor amounts on the assessment of the properties of amorphous carbon thin films, especially the optical and electrical characteristics. The lower part of the oyster mushroom, which is normally discarded, was harvested and extracted into mushroom waste oil using Soxhlet extraction. CVD technique was used for the deposition of amorphous carbon, where mushroom waste oil was used as a precursor and glass as a substrate. Then, UV-Vis spectroscopy, current-voltage (I-V) measurement, and Raman spectroscopy were utilized for characterization. The findings demonstrate that the thin films show a combination of sp3 and sp2 bonded carbon atoms, which is common for amorphous carbon. The lowest optical band gap, 0.37 eV, and the highest electrical conductivity, 1.51 × 10-5 S.cm-1 was deposited at 2 ml of oyster mushroom waste oil. These results indicate that amorphous carbon grown from mushroom waste oil is capable of being a ‘green’ alternative as a source for carbon-based solar cells in the future.
Citation
Radhianie-Rining, A., Ahmad, N., Muhammad-Sukki, F., & Wan-Mohtar, W. A. A. Q. I. (2025). Optical and Electrical Properties of Amorphous Carbon Thin Films Grown from Mushroom Waste Oil using Chemical Vapor Deposition (CVD). PaperASIA, 41(3b), 113-120. https://doi.org/10.59953/paperasia.v41i3b.414
