Novel Sugar Apple-Shaped SnO2 Microspheres With Light Scattering Effect in Dye-Sensitized Solar Cell Application
Novel Sugar Apple-Shaped SnO2 Microspheres With Light Scattering Effect in Dye-Sensitized Solar Cell Application
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DOI：
10.1109/jphotov.2017.2698500
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发表时间：
2017-05
影响因子：
3
通讯作者：
M. Tarini;N. Prakash;I. K. Mohamed Mathar Sahib;Y. Hayakawa
中科院分区：
文献类型：
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作者：
M. Tarini;N. Prakash;I. K. Mohamed Mathar Sahib;Y. Hayakawa
通过简便的水热法制备了无添加剂的新型番荔枝状二氧化锡微球，并通过在160°C下添加尿素作为添加剂实现了形貌改性。利用X射线衍射、扫描电子显微镜、透射电子显微镜、拉曼分析、傅里叶变换红外光谱、漫反射光谱和电化学阻抗谱等技术对光阳极材料进行了表征。番荔枝状二氧化锡微球和尿素辅助的二氧化锡微球具有金红石晶相，直径为2 - 3μm，光学研究表明在400 - 800 nm波长处观察到光散射。添加0.3 M尿素时，新型番荔枝形貌转变为由纳米粒子组成的二氧化锡微球，即从棱锥形晶面（210 nm）转变为纳米粒子（22 nm）。采用刮刀法制备了染料敏化太阳能电池光阳极膜，并将其浸渍在N719染料中。所得的二氧化锡微球还用作P25膜顶部的散射层，并对效率进行了比较。从I - V曲线可知，P25/番荔枝状二氧化锡微球在22.81 ms的复合速率下获得了2.76%的高效率，这是由于晶体的高光散射效应以及与P25的结合。
Novel sugar apple-shaped SnO2 microspheres with no additives were prepared by facile hydrothermal method and morphological modification was achieved by adding urea as an additive agent at 160 °C. Photoanode materials were characterized using X-ray diffraction, scanning electron microscope, transmission electron microscope, Raman analysis, Fourier transform infrared spectrum, diffuse reflectance spectroscopy, and electrochemical impedance spectroscopy techniques. Sugar apple SnO2 microspheres and urea-assisted SnO2 microspheres had rutile crystalline phase with a diameter of 2–3 μm and optical studies showed that the light scattering was observed at a wavelength of 400–800 nm. The novel sugar apple morphology changed into SnO 2 microspheres composed of nanoparticles with an addition of 0.3 M urea, that is, from pyramidal crystal facets (210 nm) to nanoparticles (22 nm). Dye-sensitized solar cells photoanode film was prepared by doctor blade technique which was dipped in N719 dye. Obtained SnO2 microspheres were also used as a scattering layer on top of P25 film, and the efficiencies were compared. From I–V curve, the high efficiency of η = 2.76% at a recombination rate of 22.81 ms was obtained for P25/sugar apple SnO2 microspheres which was because of high light scattering effect of the crystal and the combination of P25.