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All Journal The Journal of Pure and Applied Chemistry Research Jurnal Elektronika dan Telekomunikasi
Natalita Maulani Nursam
Indonesian Institute of Sciences
Chemical Engineering, Chemistry & Bioengineering Chemistry Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Medicine & Pharmacology

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

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

Abstract

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.
Modifications of Liquid Electrolyte for Monolithic Dye-sensitized Solar Cells Putri Nur Anggraini; Erlyta Septa Rosa; Natalita Maulani Nursam; Rico Fernado Sinaga; Shobih Shobih
Jurnal Elektronika dan Telekomunikasi Vol 21, No 1 (2021)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v21.35-40

Abstract

Dye-sensitized solar cells (DSSC) has been well known as a highly competitive photovoltaic technology owing to its interesting characteristics, such as, low-cost, simple, and convenient to modify both chemically and physically. One way to reduce the production cost of DSSCs is to conduct a structural modification in the form of a monolithic structure by using a single conductive substrate to accommodate both photoelectrode and counter electrode. However, the photovoltaic performance of monolithic DSSCs is typically still lacking compared to its conventional DSSCs counterparts that uses sandwich structure. One of the crucial factors that determine the photovoltaic performance of a monolithic DSSC is its electrolyte. In this work, the performance of monolithic DSSCs were studied through modifications of the electrolyte component. Two types of commercial liquid electrolytes that have different chemical properties were used and combined into various compositions, and the resulting DSSCs performances were compared. The stability of the monolithic cells was also monitored by measuring the cells repeatedly under the same condition. The result showed that during the first measurement the highest performance with a power conversion efficiency of 1.69% was achieved by the cell with a higher viscosity electrolyte. Meanwhile, the most stable performance is shown by the cell containing lower viscosity electrolyte, which achieved an efficiency of 0.66% that measured on day 35. 
Synthesis and Modification of Macroporous Titania using Silver Nanoparticles Natalita Maulani Nursam; Jeannie Ziang Yie Tan
The Journal of Pure and Applied Chemistry Research Vol 7, No 3 (2018): Edition September-December 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (909.813 KB) | DOI: 10.21776/ub.jpacr.2018.007.03.406

Abstract

A synthesis method for preparing macroporous nitrogen and silver-modified titania via sol-gel route is presented. The addition of nitrogen and silver nanoparticles was carried out simultaneously with a hard templating technique using silica spheres packed into a three dimensional opal structure. The influence of such modifications on the optical and chemical properties of titania was evaluated using photocatalytic degradation under visible light. The macroporous opal templated samples in this work performed better than the commercial titania, Degussa P25. The highest photocatalytic enhancement, showing more than eight times higher activity than the non-modified titania, was achieved by the opal templated sample prepared with 1.0 mol % of silver. Although silver addition and macroporous templating enhanced the visible light activity, the most significant improvement was afforded by the utilization of the silica opal template that gave rise to high surface area (>100 m2 g-1) and promoted the surface charge interaction.
Co-Authors Ade Istiqomah Erlyta Septa Rosa Jeannie Ziang Yie Tan Jojo Hidayat Putri Nur Anggraini Rico Fernado Sinaga Shobih - Shobih Shobih