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All Journal Mitra Sains Archive of Community Health (Arc.Com.Health) Prosiding Seminar Biologi Komunikasi Fisika Indonesia Jurnal Elektronik Pendidikan Matematika Tadulako Jurnal Kreatif Tadulako Online Lembaran Ilmu Kependidikan AL-TA´LIM Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan NALARs Jurnal Keolahragaan JURNAL JPSD (Jurnal Pendidikan Sekolah Dasar) Fakultas Ilmu Kesehatan JOURNAL ONLINE OF PHYSICS Jurnal Tekun JURNAL PENDIDIKAN FISIKA Journal of Educational Social Studies Jurnal Ners dan Kebidanan (Journal of Ners and Midwifery) Otoritas : Jurnal Ilmu Pemerintahan JURNAL ILMIAH MATEMATIKA DAN TERAPAN UNM Geographic Journal Jurnal Pemberdayaan Masyarakat: Media Pemikiran dan Dakwah Pembangunan EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Jurnal Ilmu Kesehatan Sebatik Indonesian Aquaculture Journal Jurnal Riset Akuakultur Jurnal Penelitian Perikanan Indonesia Jurnal Ilmiah Bisnis dan Ekonomi Asia CARADDE: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknologi Pertanian JPF : JURNAL PENDIDIKAN FISIKA Proceedings of the International Conference on Applied Science and Health Al-Ta lim Journal ACCOUNTIA JOURNAL Accounting Trusted, Inspiring, Aunthentic Journal Al-Bidayah: Jurnal Pendidikan Dasar Islam Pepatudzu : Media Pendidikan dan Sosial Kemasyarakatan Jurnal Isema : Islamic Educational Management Musamus Accounting Journal JIA (Jurnal Ilmiah Agribisnis) : Jurnal Agribisnis dan Ilmu Sosial Ekonomi Pertanian Husada Mahakam: Jurnal Kesehatan PENA TEKNIK: Jurnal Ilmiah Ilmu-Ilmu Teknik Jurnal Migasian Akamigas Balongan Indramayu Jurnal Perspektif: Jurnal Kajan Sosiologi Pendidikan PROSIDING Seminar Nasional FKIP Universitas Muslim Maros Judika (Jurnal Nusantara Medika)
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Journal : JOURNAL ONLINE OF PHYSICS

PEMBUATAN SEL SURYA TERSENSITASI PEWARNA (SSTP) LAPISAN TiO2/GRAFIT DARI EKSTRAK KELOPAK BUNGA ROSELLA, BERAS KETAN HITAM, DAN UBI JALAR UNGU nurhidayah, nurhidayah; suwarni, suwarni; Usna, Sri Rahayu Alfitri; Afrianto, Muhammad Ficky; farid, faizar
JOURNAL ONLINE OF PHYSICS Vol 2 No 2 (2017): Jurnal Fisika Vol 2 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.843 KB)

Abstract

Fabrication of Dye-Sensitized Solar Cells (DSSC) using working electrodes composed of a mixture of TiO2 and 14% of graphite, which then denoted as TiO2:C14%, has been done. The TiO2:C14% colloid was deposited on a conductive Fluorine Doped Tin Oxide (FTO) glass substrate by using sol-gel-spin coating at the speed of 1500 rpm for 50 seconds. This thin layer was then immersed for 24 hours in different dye solutions extracted from Rosella petals (hibiscus sabdariffa), black glutinous rice (oryza sativa) and purple sweet potato (ipomoea batatas). Composition materials used to fabricate the solar cells were characterized by using x-ray diffraction (XRD) and scanning electron microscope (SEM). The power conversion efficiency (PCE) of the solar cells was measured by using a set of I-V characteristic circuit. The result showed that the highest PCE of 3 x 10-3 % was obtained from the cells based on dye extracted from rosella petals compared to those from black glutinous rice and purple sweet potato.   Keywords: DSSC, dye, rosella, TiO2, spin coating, XRD, efficiency.
PENGARUH FAKTOR EKSPOSI TERHADAP KUALITAS CITRA RADIOGRAFI sparzinanda, eif; Nehru, Nehru; nurhidayah, nurhidayah
JOURNAL ONLINE OF PHYSICS Vol 3 No 1 (2017): Jurnal Fisika Vol 3 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (420.412 KB) | DOI: 10.22437/jop.v3i1.4428

Abstract

The research  on the influence of exposure factor on radiographic image quality has been conducted. This research uses phantom, water in plastic container as human substitute with focus film distance (FFD) 100 cm and broad field of irradiation 15 cm × 15 cm. The exposure conditions are given by exposure factors including variations in tube voltages of 60 kV, 65 kV, 70 kV, 75 kV, 80 kV called standard techniques or routine voltage techniques and the time flow is as big as 20 mAs, 25 mAs and 30 mAs. The results showed that the image quality will decrease with the use of current and time high. Image quality can be seen on gray-level histogram using java Image-J Basics version 1.38 software to get optimum value from exposure factor on image quality.