We report the fabrication of a dye-sensitized solar cell (DSSC) using low-cost materials (carbon ink from an inkjet printer coated on glass as the counter electrode) and made by a combination of spray deposition and doctor blade methods. We noted that the efficiency of the DSSC with the carbon-coated electrode (1.13%) was comparable to that with a platinum-coated counter electrode (1.16%). We also proposed an equivalent circuit for this solar cell. The value of the charge-transfer resistance was determined both experimentally and analytically, and we found that both approaches produced the same results. Moreover, we improved the efficiency of DSSC based carbon by depositing copper nanoparticle into the space between Titanium Dioxide (TiOv2) nanoparticle using electroplating methods.

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This study aims to develop wayang golek puppet show as a learning medium for physics subject, specifically on the concept of light. This research is a research and development that refers to the ADDIE model which includes 5 stages, namely Analysis, Design, Development, Implementation, and Evaluation. The video playback for the wayang golek puppet show produced were developed by involving Grade VIII students of Terpadu Madani Model Junior High School. The resulting wayang golek puppet video products were analyzed by media experts and content experts using questionnaires. It was found that the average score of the content expert’s assessment was 3.56 which belonged in the “Very Good” category, whereas the average score of the media expert was 3.73 which was categorised in the “Very Good” category. In addition, the resulting media was also analyzed by the teacher for its feasibility using questionnaires. The result obtained an average score of 3.00 and was categorized as “Good”. Furthermore, the final product of the video media playback was also tested on students, and an average score of 3.27 was obtained. This is categorized as “Strongly Agree”. The results of this study indicate that the wayang golek video media playback is feasible to be used as a medium for learning physics, especially regarding the light concepts for students.

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