The effect of micro sized graphite insertion on light absorption and output of TiO2 based solar cell

The TiO2 based solar cells researches have attracted a lot of attention due to the simple fabrication process and relatively low production cost. However, this type of solar cell has the disadvantage due to its large band gap of 3.1 eV which generates low sun light absorption. To overcome this probl...

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Bibliographic Details
Main Authors: Fauzia, Jalilah, Handayani, Ismudiati Puri, Fitriani, Tahniah Ida, Subekti, Dhika Marlia, Rosi, Memoria, Rokhmat, Mamat
Format: Conference Proceeding
Language:English
Subjects:
Absorption spectra
Anatase
Efficiency
Electrical properties
Electromagnetic absorption
Graphite
Insertion
Nanoparticles
Open circuit voltage
Photovoltaic cells
Production costs
Short circuits
Solar cells
Spin coating
Titanium dioxide
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Summary:The TiO2 based solar cells researches have attracted a lot of attention due to the simple fabrication process and relatively low production cost. However, this type of solar cell has the disadvantage due to its large band gap of 3.1 eV which generates low sun light absorption. To overcome this problem, the TiO2 is usually incorporated with dye or other nanoparticles. In this study, micro-sized graphite was inserted into anatase-TiO2 solar cells using the doctor blade and spin-coating methods. The morphology and the effect of graphite insertion on TiO2 to the absorption spectrum are characterized by using scanning electron microscopy and UV-Vis, respectively. Meanwhile, the efficiency of solar cell is determined from the I-V curve characterization. Generally the I-V curve characteristics is affected by the mass of graphite insertion, Even though the observed highest efficiency is 0.052 %, the graphite insertion is found to increase the light absorption about 75 % when 0.4 gram graphite is inserted to 0.7 gram TiO2 and deposited using doctor blade method. Furthermore, the I-V curve characteristics and efficiency can be modified by depositing the sample using spin coating method which tends to produce higher open circuit voltage and smaller short circuit method. A 350 mV open circuit voltage is observed for 1000 rpm spin coating. A higher efficiency is obtained for smaller rpm. This study shows how graphite insertion affects the light absorption and electrical properties of anatase-TiO2 based solar cell.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0078307