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Dye-Sensitized Solar Cells(DSSC) Use Natural Organic Sulphur Cosmos Leaves Darmawan, Muhammad Iman; Nuzuluddin, Muh.
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.20932

Abstract

Energy is a basic need in everyday life, so the need for energy in the world continues to grow. Energy is usually produced from fossils whose existence is diminishing and cannot be renewed. Therefore many experts are looking for ways to make and create some renewable energy, and Dye-sensitized solar cell (DSSC) is one of them. In this study aimed to determine the characterization of the electrical properties of the Dye Sulphur Cosmos (Kenikir Leaf) material extract. The study conducted absorbance tests using a UV Visible 1601 PC Spectrophotometer and current and voltage tests (I-V) using Cathay. These results indicate that some natural dyes from the extraction of natural organic matter have absorbance spectra in the range of 300-800 nm, which have the potential as DSSCs.
PENERAPAN PEMBELAJARAN IPA BERORIENTASI LITERASI SAINS BERBASIS STEM BAGI CALON GURU SD/MI Purbaningrum, Dwi; Ganjarjati, Nur Innayah; Darmawan, Muhammad Iman
Kappa Journal Vol 8 No 1 (2024): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.25048

Abstract

Penelitian ini merupakan penelitian deskriptif kualitatif. Penelitian ini bertujuan untuk mendeskripsikan penerapan pembelajaran IPA berorientasi literasi sains berbasis STEM bagi calon guru SD/MI. Indikator literasi saintifik yang digunakan menurut PISA dikelompokkan  menjadi 3  yaitu: menjelaskan  fenomena  secara  ilmiah,  merancang  dan mengevaluasi  penyelidikan  ilmiah,  serta  menafsirkan data dan bukti secara ilmiah.  STEM (Science, Technology, Engineering, and Mathematics) adalah sebuah pendekatan pembelajaran yang mengintegrasikan empat bidang ilmu tersebut dalam satu program. Berdasarkan hasil analisis penerapan pembelajaran IPA berorientasi literasi Sains berbasis STEM bagi calon guru SD/MI menunjukkan bahwa: pada aspek menjelaskan fenomena secara ilmiah sebesar 88,0 %. Aspek kedua yaitu merancang dan mengevaluasi penyelidikan ilmiah sebesar 86,7%. Pada aspek ketiga yaitu menafsirkan data dan bukti secara ilmiah sebesar 84,3 %. Secara hasil rata-rata didapatkan 86,3% dengan kategori Sangat Baik. Dengan demikian penerapan pembelajaran IPA berorientasi literasi Sains berbasis STEM dapat terlaksana dan mencapai aspek-aspek literasi sains dan komponen STEM dengan Sangat Baik
Antigonon Leptopus Extract as a Renewable Energy Source Material for the Development of Dye-Sensitized Solar Cells (DSSC) Darmawan, Muhammad Iman; Mandala Putra, Hadian; Ali Majdi, Yogi Stiamil; Gunawan, Istajir Adi
Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya Vol. 5 No. 3 (2025): Oktober
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/lambda.v5i3.1804

Abstract

Solar cells are devices composed of solar panels that convert light into electrical energy. Conventionally, energy is primarily derived from fossil fuels, which are non-renewable resources. Consequently, many researchers have sought alternative sources of energy. One such innovation is the Dye-Sensitized Solar Cell (DSSC). This study aims to investigate the effect of Antigonon leptopus flower dye as an active material in Dye-Sensitized Solar Cells (DSSC). The absorbance testing was conducted using a UV-Visible Spectrophotometer (1601 PC), while current and voltage (I–V) measurements were carried out using a Keithley instrument. The results showed that the natural dye extracted from the leaves of Antigonon leptopus exhibited an absorbance spectrum in the range of 200–800 nm. These findings suggest that Antigonon leptopus has potential as a natural sensitizer material for application in Dye-Sensitized Solar Cells (DSSC).