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首页> 外文期刊>Thin Solid Films >Ultra-compact titanium oxide prepared by ultrasonic spray pyrolysis method for planar heterojunction perovskite hybrid solar cells
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Ultra-compact titanium oxide prepared by ultrasonic spray pyrolysis method for planar heterojunction perovskite hybrid solar cells

机译：超声喷雾热解法制备平面型异质结钙钛矿混合太阳能电池超紧凑二氧化钛

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摘要

The electron transport layer of planar-heterojunction perovskite solar cells was produced by the ultrasonic spray pyrolysis (USP) of organotitanium precursors and the spin-coating of TiO2 sol-gel. Although the TiO2 products prepared from both methods have the same anatase crystal structure, the former route yields an ultra-compact, bulk-like film with reduced defects. Results from the electrochemical impedance spectroscopy measurements reveal the electron transfer resistance through the TiO2/CH3NH3PbIxCl3-x interface for the titanium oxide prepared by ultrasonic spray pyrolysis (TiO2-USP) method is lower than that for the titanium oxide prepared by sol-gel (TiO2-SG) method. Interesting, the TiO2-USP device exhibits relative low interfacial resistance of charge carrier through the CH(3)NH(3)PbIxCl(3-x)/spiro-OMeTAD interface as well. As a result, replacing TiO2-SG with TiO2-USP substantially improves the power conversion efficiency from 12.98% to 16.13%, demonstrating the USP is a facile approach to fabricate high-quality TiO2 for developing high-performance perovskite solar cells.
机译：平面异质结钙钛矿型太阳能电池的电子传输层是通过有机钛前驱体的超声喷雾热解（USP）和TiO2溶胶-凝胶的旋涂而制得的。尽管用两种方法制备的TiO2产品均具有相同的锐钛矿晶体结构，但前一种方法可制得具有减少缺陷的超紧凑，块状薄膜。电化学阻抗谱测量的结果表明，通过超声喷雾热解法（TiO2-USP）制备的二氧化钛通过TiO2 / CH3NH3PbIxCl3-x界面的电子转移电阻低于通过溶胶-凝胶法（TiO2）制备的二氧化钛。 -SG）方法。有趣的是，TiO2-USP设备通过CH（3）NH（3）Pb1xCl（3-x）/ spiro-OMeTAD界面也表现出相对较低的电荷载流子界面电阻。结果，用TiO2-USP代替TiO2-SG可以将功率转换效率从12.98％提高到16.13％，这证明USP是一种制造高质量TiO2的简便方法，用于开发高性能钙钛矿太阳能电池。

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