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All Journal Jurnal Elektronika dan Telekomunikasi Jurnal Tekno Insentif Makara Journal of Technology Metalurgi

Jojo Hidayat

Research Center for Electronics and Telecommunication (PPET)-LIPI Jl. Cisitu 21/154D, Bandung 40135

Author-ID : 281522

Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analysis of Catalytic Material Effect on the Photovoltaic Properties of Monolithic Dye-sensitized Solar Cells Nursam, Natalita Maulani; Istiqomah, Ade; Hidayat, Jojo; Anggraini, Putri Nur; -, Shobih
Jurnal Elektronika dan Telekomunikasi Vol 17, No 2 (2017)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v17.30-35

Dye-sensitized solar cells (DSSC) are widely developed due to their attractive appearance and simple fabrication processes. One of the challenges that arise in the DSSC fabrication involves high material cost associated with the cost of conductive substrate. DSSC with monolithic configuration was then developed on the basis of this motivation. In this contribution, titanium dioxide-based monolithic type DSSCs were fabricated on a single fluorine-doped transparent oxide coated glass using porous ZrO2 as spacer. Herein, the catalytic material for the counter-electrode was varied using carbon composite and platinum in order to analyze their effect on the solar cell efficiency. Four-point probe measurement revealed that the carbon composite exhibited slightly higher conductivity with a sheet resistance of 9.8 Ω/sq and 10.9 Ω/sq for carbon and platinum, respectively. Likewise, the photoconversion efficiency of the monolithic cells with carbon counter-electrode almost doubled the efficiency of the cells with platinum counter-electrode. Our results demonstrate that carbon could outperform the performance of platinum as catalytic material in monolithic DSSC.

Analysis of Thermal Treatment Zirconia as Spacer Layer on Dye-Sensitized Solar Cell (DSSC) Performance with Monolithic Structure Anwar, Chairil; Rosa, Erlyta Septa; Shobih, Shobih; Hidayat, Jojo; Tahir, Dahlang
Jurnal Elektronika dan Telekomunikasi Vol 18, No 1 (2018)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v18.21-26

Monolithic dye-sensitized solar cells (DSSC) offer the prospect of lower material cost and require a simpler manufacturing process compared with conventional DSSC. Fabricated on a single fluorine tin oxide (FTO) glass substrate consists of a nanoporous TiO2 photoanode layer, a ZrO2 spacer layer, a carbon counter electrode layer, a dye, and an electrolyte. The spacer layer on the monolithic DSSC serves as electrolyte storage and insulating layer to separate between photoanode and counter electrode. Zirconia is often used as a spacer because it has high temperature resistant properties, high dielectric constant and adhesive as an insulator that has band gap between 5-6 eV. The effects of the thermal treatment of zirconia layer as a spacer electrolyte on the performance of monolithic DSSC have been investigated. The cell’s performance increases with the sintering temperature as well as indicated by the decreased in particle size and increased in quantum efficiency in the absorption region of the titania layer. Co-sintering treatment tends to drastically reduce cell’s performance. The highest performance was obtained at a temperature sintering of 500o C with an PCE of 0.22%, Isc = 0.16 mA and Voc = 0.71 V.

Performance of Dye-sensitized Solar Cells Based on Gel Electrolyte Muliani, Lia; Nursam, Natalia M.; Hidayat, Jojo
Jurnal Elektronika dan Telekomunikasi Vol 13, No 1 (2013)
Publisher : Indonesian Institute of Sciences

Electrolyte is one of the crucial elements in dye sensitized solar cells (DSC) due to the reduction-oxidation reactions take place in this area and it has the function as the charge transfer medium. An electrolyte solution contains redox couple such as I-/I3 is filled up into a space between the photo-anodes and the counter electrode. Usually, the DSC employs a liquid electrolyte which using organic solution because easy preparation. But it has disadvantage, solvent evaporation occurs and this can decrease the cell performance. One of way to solve this problem is change liquid electrolyte to gel electrolyte. This paper describes fabrication of DSC based on gel electrolyte. Performance of the DSC is compared to the cell which using a liquid electrolyte. The result shows that the energy conversion efficiency of the solar cells based on gel electrolyte was lower than liquid electrolyte solar cell that is 1.51% and 2.23% respectively. Based on life time investigation obtained the performance of gel electrolyte solar cell is much stable than liquid electrolyte solar cell.

Karakteristik Pasta TiO2 Suhu Rendah untuk Aplikasi Dye Sensitized Solar Cell (DSSC) Al Qibtiya, Mariya; Muliani, Lia; Hidayat, Jojo
Jurnal Elektronika dan Telekomunikasi Vol 14, No 1 (2014)
Publisher : Indonesian Institute of Sciences

Pada tulisan ini, diuraikan karakteristik pasta TiO2 suhu rendah untuk aplikasi sel surya berbasis dye-sensitized yang dipreparasi dengan penambahan serbuk TiO2 reflektor. Penambahan TiO2 reflektor sebagai light scattering layer pada pasta dilakukan untuk melihat pengaruhnya terhadap karakteristik listrik sel surya yang dihasilkan. Preparasi pasta dilakukan menggunakan bahan komersial yaitu pasta T-Nanooxide D-L (Solaronix) dan serbuk pasta WER2-O (Dyesiol) sebagai bahan reflector. Bahan tersebut dianalisis struktur kristalnya. Hasil karakterisasi X-Ray Diffraction (XRD) menunjukan bahwa bahan TiO2 serbuk yang digunakan adalah nanokristal dengan struktur kristal anatase. Pasta ini dideposisi di atas permukaan plastik dan kaca konduktif (ITO-PET dan FTO) dengan metode doctor blade printing. Proses sintering lapisan TiO2 dilakukan pada suhu rendah yaitu 120 ˚C selama 4 jam. Morfologi permukaan lapisan TiO2 dianalisa menggunakan Scanning Electron Microscopy (SEM). Lapisan TiO2 yang terbentuk diaplikasikan pada DSSC sebagai fotoelektroda. Pewarnaan dengan larutan N-719 (Ruthenium Complex), lapisan elektroda kerja platina dan larutan elektrolit iodine. Karakteristik kurva I-V dengan ukuran sel daerah aktif 1 cm2 diukur menggunakan Sun Simulator AM1,5 dengan sumber cahaya Xenon dan intensitas 50 mW/cm2. Hasil pengukuran menunjukkan penambahan serbuk TiO2 reflektor dapat meningkatkan unjuk kerja sel surya fleksibel yang dihasilkan. Efisiensi terbaik DSSC yang dihasilkan adalah 0,166% untuk substrat plastik dan 0,167% untuk substrat kaca.

Otomatisasi Lampu, Tirai, dan Kipas Angin Menggunakan Mikrokontroler untuk Menghemat Energi Listrik Lidiawati, Wida; Pratomo, Lia Muliani; -, Waslaluddin; Hidayat, Jojo
Jurnal Elektronika dan Telekomunikasi Vol 13, No 2 (2013)
Publisher : Indonesian Institute of Sciences

Kebutuhan energi listrik saat ini terus mengalami peningkatan. Hal ini disebabkan karena jumlah penduduk yang semakin meningkat dan pertumbuhan ekonomi. Saat ini, untuk memenuhi kebutuhan energi listrik, eksploitasi terhadap sumber-sumber energi berbasis fosil terus dilakukan padahal ketersediaan di alam semakin berkurang. Hal ini masih diperparah oleh pemborosan energi, baik yang dilakukan pada tingkat rumah tangga, perkantoran, maupun industri. Oleh karena itu, pada penelitian ini, dilakukan otomatisasi pada perangkat listrik, dalam hal ini, lampu, tirai, dan kipas angin untuk mengoptimalkan pemanfaatan energi listrik. Lampu yang digunakan berupa Light Emitting Diode (LED) dan pergerakan tirai serta kipas diatur oleh motor DC. Pada sistem otomatisasi dibuat rangkaian sensor dengan menggunakan Light Dependent Resistor (LDR). Tegangan keluaran dari LDR akan diolah oleh mikrokontroler untuk mengaktifkan aktuator, dalam hal ini LED dan motor DC. Dengan sistem otomatisasi, energi yang digunakan dapat dihemat 50%.

A Comparison of the Utilization of Carbon Nanopowder and Activated Carbon as Counter Electrode for Monolithic Dye-Sensitized Solar Cells (DSSC) Mubarak, Zaky; Nursam, Natalita Maulani; Shobih, Shobih; Hidayat, Jojo; Tahir, Dahlang
Jurnal Elektronika dan Telekomunikasi Vol 18, No 1 (2018)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v18.15-20

Monolithic design is one of the most promising dye-sensitized solar cell (DSSC) architectures to develop, because it allows the elimination of one conductive substrate and offers the possibility for printing layer-by-layer of the materials that made up its structure. In this study, titanium dioxide-based monolithic type DSSCs were fabricated on a single fluorine-doped transparent oxide coated glass with TiO2 as photoanode and porous ZrO2 as spacer. The type of the carbon material used as the composite paste for the counter electrode was varied to see the effect on the solar cell efficiency. Four-point probes measurement revealed that the resistivity of the carbon layer synthesized using activated carbon exhibited slightly higher conductivity with a sheet resistance of 10.70 Ω/sq and 11.09 Ω/sq for activated carbon and carbon nanopowder, respectively. The efficiency of DSSC that uses activated carbon as counter electrode was higher (i.e. 0.221%) than the DSSC with carbon nanopowder (i.e. 0.005%). The better performance of DSSC with activated carbon as a counter electrode was due to its better conductivity and higher surface area compared to those of carbon nanopowder.

Application of Large Area TiO2 Photoelectrode on Dye-Sensitized Solar Cells Nursam, Natalia M.; Muliani, Lia; Hidayat, Jojo
Jurnal Elektronika dan Telekomunikasi Vol 13, No 1 (2013)
Publisher : Indonesian Institute of Sciences

The scale-up of dye-sensitized solar cell (DSSC) has been a big issue as the DSSC technology process progresses from laboratory scale to large area applications. Meanwhile, this type of solar cell has been of great interest among PV scientist and academics as it can be produced in lower-cost processes compared to the conventional solar cells which are mostly fabricated from silicon. The fabrication of DSSC prototypes with a relatively large active area of 9x9 cm2 are demonstrated in this paper. Large area of TiO2 surface has been shown to significantly increase the ISC, as well as VOC and Pmax. Nevertheless, deterioration of fill factor (FF) was observed as the result of the increase on series resistance with respect to the increase in the photoelectrode area.

Effect of Geometrical Structure to the Performance of Monolithic Dye–Sensitized Solar Cells Nugraha, Bayu Aditya; Shobih, Shobih; Hidayat, Jojo; Tahir, Dahlang
Jurnal Elektronika dan Telekomunikasi Vol 18, No 2 (2018)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v18.53-59

Since invented for the first time, researchers in the world were focusing on how to increase the efficiency of dye-sensitized solar cells (DSSC) and reduce of the fabrication cost. Monolithic type of DSSC is one of the best solutions to reduce the fabrication cost due to the elimination of one of transparent conductive oxide (TCO) substrate. In this study, DSSC monolithic was fabricated layer by layer by using screen printing method. There are three layers that printed in each cell namely TiO2, ZrO2, and carbon before being injected with electrolytes. The geometrical structure of DSSC was varied to find the highest performance. From the I-V characteristics and incident photon-to-current efficiency (IPCE) characterization shows the highest efficiency is 0.137% and the highest conversion of photons to current occurs at around 510 nm wavelength, for a structure which has ZrO2 layer not crosses over the no-FTO area, while TiO2 layer half crosses the no-FTO area, this is most likely caused by the imperfection of the ZrO2layer.

Series-Interconnected Plastic Dye-Sensitized Solar Cells Prepared by Low- Temperature Binder-Free Titania Paste Rosa, Erlyta Septa; Muliani, Lia; Shobih, Shobih; Hidayat, Jojo; Yuliarto, Brian
Makara Journal of Technology Vol. 18, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

The aim of this research is to study dye-sensitized solar cells (DSSC). This was implemented on a flexible polyethylene terephthalate (PET) substrate using a mixture of transparent and scattered mesoporous anatase-titania as the electron transport layer for the photoelectrode. This mixture of anatase titania performed a dual function of light scattering and efficient dye absorption. In this study, a porous nano-TiO2 film was prepared on indium tin oxide (ITO) coated polyethylene terephthalate (PET) by using a binder-free titania paste; on it, a DSSC was fabricated. The paste which contained a mixture of TiO2 nanoparticles, acid chloride, and ethanol was printed on two patterns of 1x6 cm2 active areas followed by sintered at 120 ºC to form TiO2 films. A commercial dye, N719, was adsorbed on the surface of TiO2 films and assembled to two platinized conductive plastic patterns to form a counter electrode and thus a sandwich-type dye cell. Finally, a solution of KI/I2 electrolytes was injected into the cell in which a couple of sandwich-type dye cells with an active area of 6 cm2 for each cell were series interconnected with a z-type interconnection between the photoelectrode of one cell and the counter electrode of another cell. The cell performance was characterized by employing simulated solar light at an intensity of 50 mW/cm2. The results showed interconnected cells generating a short-circuit photocurrent density of 2.34 mA/cm2, an open-circuit voltage of 1.10 volt, and overall 0.172% power conversion efficiency.

Studi Konfigurasi Organic Rankine Cycle (ORC) dan Pemilihan Fluida Kerja pada Pembangkit Listrik Geotermal Hidayat, Jojo; Rusirawan, Dani
Jurnal Tekno Insentif Vol 18 No 2 (2024): Jurnal Tekno Insentif
Publisher : Lembaga Layanan Pendidikan Tinggi Wilayah IV

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36787/jti.v18i2.1308

Energi panas bumi atau geotermal adalah sumber energi bersih sebagai alternatif pengganti bahan bakar fosil. Geotermal dengan temperatur tinggi telah banyak dieksploitasi sebagai pembangkit tenaga listrik. Geotermal dengan temperatur rendah dan menengah berpotensi besar menjadi pembangkit tenaga listrik menggunakan siklus Rankine organik (organic Rankine cycle/ORC), yaitu mengganti air dengan fluida organik yang memilik titik didih yang lebih rendah. Pada studi ini akan dipaparkan konfigurasi ORC pada geotermal sebagai pembangkit tenaga listrik. Selain itu, pemilihan fluida organik sebagai fluida kerja juga akan dikaji, karena hal ini menentukan performa/unjuk kerja sistem pembangkit daya. Pemilihan fluida kerja harus diperhatikan terkait sifat-sifatnya, seperti titik didih, temperatur dekomposisi dan pengaruhnya terhadap komponen sistem.

Co-Authors -, Shobih -, Waslaluddin Al Qibtiya, Mariya Anggraini, Putri Nur Brian Yuliarto Chairil Anwar Dahlang Tahir Erlyta Septa Rosa Erlyta Septa Rosa Istiqomah, Ade Lia Muliani Lidiawati, Wida Novianti, Ressa Muhripah Nugraha, Bayu Aditya Nursam, Natalia M. Nursam, Natalita Maulani Nursam, Natalita Maulani Pratomo, Lia Muliani RUSIRAWAN, DANI Shobih Shobih Syoni Soepriyanto Zaky Mubarak, Zaky

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