Investigation of Optoelectronic Properties by Synthesizing Hybrid Nano-semiconductors in New Generation Solar Cells
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Date
2021-01-09
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Düzce Üniversitesi Bilim ve Teknoloji Dergisi,
Abstract
The energy requirements in our society are based on fossil fuels, but the fact that these fossil fuels are limited and
the rapid increase in carbon dioxide concentration due to the burning of fossil fuels cause global warming and
climate changes. Under these conditions, interest in photovoltaic (PV) solar cells as an alternative and clean energy
source is increasing. The use of silicon solar cells and thin film-based solar cells has been actively studied in recent
years. But these solar cells are still too expensive to compete with public electricity generation. One of the important ideas for reducing the cost of solar cells and increasing energy conversion efficiency is the production
of nano-semiconductor based new generation dye sensitized solar cells (DSSC). In this study, hybrid materials
were obtained via CuO which is grown on TiO2 semiconductor and used as photo anode in DSSC. TiO2
semiconductor was prepared by hydrothermal method. CuO was synthesized by hydrothermal method on the
prepared TiO2 semiconductor. In DSSCs, N719 was used as the dye and platinum was used as the counter
electrode. Structural and optical characterizations were carried out by using Scanning Electron Microscope (SEM),
Energy Dispersive X-Ray spectroscopy (EDAX), X-Ray Diffraction (XRD) and solar efficiencies were calculated
from Current density-voltage (J-V) measurement. From the SEM analysis, it was shown that the CuO /TiO2 nanosemiconductor was synthesized at a high surface volume ratio and had a crystal size of approximately 20-50 nm.
Existence of CuO semiconductor synthesized on TiO2 has been clearly shown from EDAX measurements. High
purity crystallizations and Cu/TiO2 nano-semiconductor were detected from XRD measurements. Produce of solar
cell was carried out in two stages and firstly, the efficiency of the solar cells produced with pure TiO2 was obtained
as η = 5.05%, while the solar efficiency of the Cu /TiO2 cell was obtained as 6.18%. It has been observed that the
efficiency of DSSCs increased by 20% by doping of CuO onto the TiO2 semiconductor.
Description
Keywords
: Boya Duyarlı Güneş Hücreleri (DSSC), Nano-yarıiletkenler, CuO/TiO2 foto anot
Citation
Yeni Nesil Güneş Hücrelerinde Hibrit Nano-yarıiletkenlerin Sentezlenerek Optoelektronik Özelliklerinin İncelenmesi