Solid-State Solar Energy Conversion from WO3 Nano and Microstructures with Charge Transportation and Light-Scattering Characteristics

被引:14
|
作者
Moon, Juyoung [1 ]
Shin, Woojun [2 ]
Park, Jung Tae [1 ]
Jang, Hongje [2 ]
机构
[1] Konkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 05029, South Korea
[2] Kwangwoon Univ, Dept Chem, 20 Gwangwoon Ro, Seoul 01897, South Korea
基金
新加坡国家研究基金会;
关键词
solid-state electrolyte; tungsten oxide (WO3); hydrothermal; charge transportation; solar energy conversion; light scattering; dye-sensitized solar cell; CELLS; ELECTROLYTES; LAYER;
D O I
10.3390/nano9121797
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Solar energy conversion devices composed of highly crystalline gel polymers with disk-WO3 nanostructure and plate-WO3 microstructures (D-WO3 and P-WO3, respectively) exhibited higher power conversion efficiency than those with a gel electrolyte. In this study, D-WO3 and P-WO3 were prepared using a hydrothermal process and their structural and morphological features were investigated for application in solar energy conversion devices. The P-WO3 solid-state electrolyte significantly enhanced the cell performance owing to its charge transportation and light-scattering characteristics. The P-WO3 solid-state electrolyte showed a power conversion efficiency of 6.3%, which is higher than those of the gel (4.2%) and D-WO3 solid-state (5.5%) electrolytes. The electro-chemical impedance spectroscopy (EIS), intensity-modulated voltage spectroscopy (IMVS), diffuse reflectance, and incident photon-to-current conversion efficiency (IPCE) analysis results showed that the P-WO3 solid-state electrolyte showed improved charge transportation and light scattering, and hence enhanced the cell performance.
引用
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页数:10
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