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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya Jurnal Pendidikan Fisika dan Keilmuan (JPFK)
Hamdini, Meri
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Astronomy Education Physics

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Model Dye-Sensitized Solar Cell dan Aplikasinya Berdasarkan Data Temperatur Harian: Studi Kasus Pangkalpinang Noor, Aliefia; Hamdini, Meri; Ramadina, Salsabila; Tiandho, Yuant
Jurnal Pendidikan Fisika dan Keilmuan (JPFK) Vol 6, No 2 (2020)
Publisher : UNIVERISTAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/jpfk.v6i2.7707

Abstract

Dye-Sensitized Solar Cells (DSSC) is photovoltaic with a dye that functions as an acceptor of sunlight. The great potential of using DSSC lies in the ease of the synthesis process, and the dyes used can come from plants. However, like most other solar cells, increasing the operating temperature can degrade the DSSC performance and thus decrease the efficiency. This article presents a model of the relationship between the effect of temperature on DSSC performance. The model proposed is derived from the DSSC equivalence with a diode circuit. By confirming the experimental research results, it is known that the model presented in this study has excellent accuracy on various DSSC performance parameters (R2> 0.99). The performance studied includes the I-V curve's shape, the value of the short-circuit current, the diode leakage current, and the open-circuit voltage. Based on daily temperature data in Pangkalpinang City, the potential performance of the DSSC could also be determined when it was developed in Kep. Bangka Belitung. The short-circuit current value obtained is in the range of 14 A with a voltage of 0.6 V. It is hoped that this proposed model can be information for the development of DSSC because of its enormous potential application in Indonesia.
SMARTPHONE-BASED ANALYSIS OF CLOTH MASKS PORES SIZE Hamdini, Meri; Tiandho, Yuant
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 14, No 1 (2021): October
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v14i1.13038

Abstract

Until now, the world is still facing the spread of the SARS-CoV-2 virus that causes COVID-19. This virus can be transmitted from human to human through droplets, so more vigilance is needed to avoid contracting this virus. One of the steps to minimize the spread of Covid-19 is to wear a face mask. In practice, most people prefer to use cloth masks than disposable medical masks because they are cheap and reusable. Cloth pore size influences the filtering ability of the cloth masks. Therefore, it is necessary to analyze the efficiencies of the cloth masks. In this study, we developed a method for measuring the pores of a cloth mask using a smartphone. In this study, we developed a method for measuring the pores of a cloth mask using a smartphone. We used the camera zoom application on a smartphone and analyzed the image using image processing software, ImageJ. We appliedHuang's algorithm to adjust the image binarization threshold then calculated the Feret diameter as the pore size of the mask. According to the analysis, the pore size ranged from 0.133 to 0.232 mm, and the efficiency ranged from 77.4 to 82.6%.
Co-Authors Noor, Aliefia Ramadina, Salsabila Yuant Tiandho