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All Journal Komunikasi Fisika Indonesia JURNAL FISIKA Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Spektra: Jurnal Fisika dan Aplikasinya Indonesian Journal of Chemistry Unri Conference Series: Community Engagement PARAHITA : Jurnal Pengabdian kepada Masyarakat Science, Technology, and Communication Journal
Iwantono Iwantono
Jurusan Fisika, Universitas Riau, Simpang Baru, Pekanbaru, 28293
Aerospace Engineering Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics

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STUDI SIFAT OPTIK BERDASARKAN PREKURSOR DALAM SINTESIS ZnO Viza Novia Putri; Iwantono Iwantono; Puji Nurrahmawati; Nashiha Chalvi Syahra
Komunikasi Fisika Indonesia Vol 20, No 1 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.1.25-30

Abstract

ZnO is a semiconductor material that can be applied for solar cells, biosensors, and electronics. In this study, the synthesis of ZnO was carried out using two precursors, namely zinc acetate dihydrate (ZAD) and zinc nitrate hexahydrate (ZNH). Synthesis of ZnO determine the optical properties based on the precursors. The synthesis of ZnO by hydrothermal method. The results of ZnO were analyzed using UV-Vis spectroscopy characterization. UV-Vis spectroscopy characterization determine for the absorbance and transmittance of the samples. The wavelength range was 200 – 800 nm. The absorbance spectrum shows strong absorption occurs at UV wavelengths. That are effectively applied to solar cells. The highest absorbance was obtained by the ZAD precursor. The transmittance for the ZAD precursor exceeded 8.8% and ZNH precursor it exceeded 19.7% at visible light wavelengths. The band gap energy of ZnO with ZAD precursor and ZNH precursor are 2.85 eV and 2.87 eV. Furthermore, other optical properties have been calculated from absorbance measurements such as the urbach energy.
SIFAT OPTIK NANOMATERIAL ZnO DOPING NIOBIUM BERDASARKAN WAKTU SINTESIS Iwantono Iwantono; Muhammad Pauji; Puji Nurrahmawati; Nashiha Chalvis Syahra
Indonesian Physics Communication Vol 20, No 3 (2023): IN PROGRESS
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.%p

Abstract

This research was conducted to fabricate Dye Sensitized Solar Cell (DSSC) based on ZnO nanomaterial.Efforts to see the optical properties of Niobium-doped ZnO are through UV-Vis characterization Niobium-doped ZnO nanomaterials with growth time variations of 6, 8, and 10 hours have been successfully synthesized using hydrothermal methods. Samples were characterized using UV-Vis spectroscopy, Scanning Electron Microscope (SEM) and energy gapSamples resulting from synthesis were characterized using UV-Vis spectroscopy along with its energy gap. Samples with a synthesis time variation of 6 hours had higher absorbance absorption and a low energy gap of 3.09 eV.
Performances of Dye-Sensitized Solar Cell (DSSC) with Working Electrode of Aluminum-doped ZnO Nanorods Truly Theresia Saputrina; Iwantono Iwantono; Awitdrus Awitdrus; Akrajas Ali Umar
Science, Technology and Communication Journal Vol. 1 No. 1 (2020): SINTECHCOM Journal (October 2020)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v1i1.22

Abstract

The study of nanomaterial for solar energy conversion via zinc oxide (ZnO) nanostructure has grounded for decades. Many reports shown that ZnO nanorod can substitute the expensive titanium-based as the working electrodes of dye-sensitized solar cell (DSSC). The main lack of ZnO-based to the titanium-based is the low charge carrier. Fortunately, this issue can be solved by metal doping to the ZnO nanorod. The dopant can improve the physical and optical properties, such as increasing charge carrier and effective surface area. These properties can lead higher efficiency of DSSC in converting the light to electricity. In this paper, we enhance the ZnO nanorod properties through the doping of aluminum (Al). For obtaining optimum results, we varied the dopant concentration of 1, 1.5, 1, and 3.0%. The Al-doped ZnO nanorod was grown by a seed-mediated hydrothermal method at 90oC for 8 hours. The physical properties were analyzed by field emission scanning electron microscopy (FESEM) and EDX, while the photovoltaic properties were analyzed by J-V curve analysis. An improvement of photovoltaic performance up to 200 % is obtained by the ZnO nanorod with 1.0% Al-doped concentration.
Co-Authors Ahmad Fadli Akrajas Ali Umar Akrajas Ali Umar Amun Amri Arisman Adnan Awidrus Awidrus Awitdrus Awitdrus, Awitdrus Desy Veyka Rukmana Dewi Mulfida E. Taer Erin Mazelly Hutapea Erman Taer Fera Anggelina Firzal, Yohannes Genny Gustina Sari H. Yusra Lazuardi Umar Lazuardi Umar Lutfi Rindang Lestari Mayangsari Mayangsari Muhammad Pauji Nashiha Chalvi Syahra Nashiha Chalvis Syahra Puji Nurrahmawati R. Taslim Rakhmawati Farma Rati Okta Della Rika Taslim Rinaldo Abdi Rini, Ari Sulistyo Rita Meldayani Rizky Ardie Yani Saidatun Khofifah Saktioto Saktioto Salomo Salomo Sella Natalia Sri Novita Sukoco Sukoco Sumarti Sumarti Sunaro Sunarno Tengku Emrinaldi Truly Theresia Saputrina Viza Novia Putri Widarti ' Windayani Windayani Yanuar Hamzah Yohannes Firzal Yolanda Rati Yurike Asra Zulkarnain Zulkarnain