Solar cells, which have been attracting attention as environmentally friendly and safe candidate as a next generation energy sources, have been studied and used in active layer materials of various structures and materials, from silicon-based crystal structures to organic-based amorphous structures....
Solar cells, which have been attracting attention as environmentally friendly and safe candidate as a next generation energy sources, have been studied and used in active layer materials of various structures and materials, from silicon-based crystal structures to organic-based amorphous structures. However, research to find a new active layer to overcome the economical limitations, physical and chemical limitations and fabrication cost of materials is still active. Among the accomplishments of this research, the organic-inorganic hybrid perovskite, which achieved 21% efficiency in the recent years, is the most noteworthy material in solar cell research in the last few years. To maximize the perovskite solar cells performance, there are many researches has been made on the electron transport layer, absorbing layer and hole transport layer. Despite of the so much advance in the device performance and the basic understanding of the perovskite crystal structure formation, the influence of various atmosphere gas during processing condition on perovskite crystal structure research is still in progress. Annealing process were used to convert precursor solution into favorable perovskite absorbing layer by changing composition of precursor or temperature. But there is lack of studies on affected by atmosphere condition during annealing process.
In this work, we investigated the influence of annealing perovskite films deposited on the n-type metal oxide, Zn2SnO4 nanoparticles in the different atmosphere (i.e. air, oxygen and argon). While annealing the perovskite, there were no substantial variation in optical properties of perovskite itself. But in argon atmosphere, using Zn2SnO4 as an electron transport material, photovoltaic parameter dramatically decreased than oxygen and ambient condition. We found that exposure to argon atmosphere during thermal annealing of the perovskite layer, the interface of zso/perovskite changes in argon atmosphere condition. Using Zn2SnO4 as an electron transporting material, built in potential of each various gas condition was different. In argon condition its Vbi was much lower than ambient and oxygen condition annealed. Because of the low Vbi than other gas condition, we believe that depletion layer was shorter than other gas condition, revealing lower open circuit voltage and fill factor. Also, we found that exposure to argon atmosphere during thermal annealing of the perovskite layer, amount of lead iodide was different in each gas condition detected by GIWAXS images. In order of Ambient
Solar cells, which have been attracting attention as environmentally friendly and safe candidate as a next generation energy sources, have been studied and used in active layer materials of various structures and materials, from silicon-based crystal structures to organic-based amorphous structures. However, research to find a new active layer to overcome the economical limitations, physical and chemical limitations and fabrication cost of materials is still active. Among the accomplishments of this research, the organic-inorganic hybrid perovskite, which achieved 21% efficiency in the recent years, is the most noteworthy material in solar cell research in the last few years. To maximize the perovskite solar cells performance, there are many researches has been made on the electron transport layer, absorbing layer and hole transport layer. Despite of the so much advance in the device performance and the basic understanding of the perovskite crystal structure formation, the influence of various atmosphere gas during processing condition on perovskite crystal structure research is still in progress. Annealing process were used to convert precursor solution into favorable perovskite absorbing layer by changing composition of precursor or temperature. But there is lack of studies on affected by atmosphere condition during annealing process.
In this work, we investigated the influence of annealing perovskite films deposited on the n-type metal oxide, Zn2SnO4 nanoparticles in the different atmosphere (i.e. air, oxygen and argon). While annealing the perovskite, there were no substantial variation in optical properties of perovskite itself. But in argon atmosphere, using Zn2SnO4 as an electron transport material, photovoltaic parameter dramatically decreased than oxygen and ambient condition. We found that exposure to argon atmosphere during thermal annealing of the perovskite layer, the interface of zso/perovskite changes in argon atmosphere condition. Using Zn2SnO4 as an electron transporting material, built in potential of each various gas condition was different. In argon condition its Vbi was much lower than ambient and oxygen condition annealed. Because of the low Vbi than other gas condition, we believe that depletion layer was shorter than other gas condition, revealing lower open circuit voltage and fill factor. Also, we found that exposure to argon atmosphere during thermal annealing of the perovskite layer, amount of lead iodide was different in each gas condition detected by GIWAXS images. In order of Ambient
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