Optical simulation of transmittance into a nanocrystalline anatase TiO2 film for solar cell applications
Optical simulation of transmittance into a nanocrystalline anatase TiO2 film for solar cell applications
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DOI：
10.1016/j.solmat.2006.09.001
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发表时间：
2007-01
影响因子：
6.9
通讯作者：
Y. Tachibana;H. Y. Akiyama;S. Kuwabata
中科院分区：
文献类型：
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作者：
Y. Tachibana;H. Y. Akiyama;S. Kuwabata
首次采用光学模拟的方法，对染料敏化太阳能电池中掺氟SnO2(F-SnO2)镀膜玻璃一侧的TiO2纳米晶薄膜透过率进行了严格的评价。从理论上确定了不同孔隙率的二氧化钛薄膜的折射率，并与椭偏测量法得到的数据进行了比较，结果一致。模拟结果表明，当调节气孔率为0.5-0.75时，在450-800 nm处，TiO_2薄膜的透过率为85-90%。与之相反，在F-SnO2衬底上沉积的TiO2薄膜在450-800 nm处的透过率为70-83%，与模拟结果相比低估了约10%。用Ru染料敏化的相同的二氧化钛薄膜制备的太阳电池的IPCE值较高(530 nm处∼为85%)，进一步验证了模拟方法。
Optical simulation has been employed, for the first time, for rigorous evaluation of transmittance into the TiO2nanocrystalline film, entering from the fluorine-doped SnO2(F-SnO2) coated glass side, in dye sensitized solar cells. The refractive index of the TiO2film with various porosities was determined theoretically, and was in agreement with the data obtained by ellipsometric measurements. The simulation clearly indicates that the transmittance into the TiO2film is 85–90% at 450–800nm, on adjusting the porosity to 0.5–0.75. In contrast, transmittances experimentally determined for the TiO2film deposited on F-SnO2exhibits 70–83% at 450–800nm, under-estimating the transmittance by about 10% compared to the simulated results. The simulation method was further substantiated by observing the high IPCE value (∼85% at 530nm) for the solar cell using the same TiO2film sensitized by ruthenium dye.