SnO2 modified mesoporous ZrO2 as efficient electron-transport layer for carbon-electrode based, low-temperature mesoscopic perovskite solar cells
SnO2 modified mesoporous ZrO2 as efficient electron-transport layer for carbon-electrode based, low-temperature mesoscopic perovskite solar cells
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二氧化锡修饰介孔 ZrO2 作为基于碳电极的低温介观过氧化物太阳能电池的高效电子传输层
DOI：
10.1063/5.0087943
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发表时间：
2022-06-27
影响因子：
4
通讯作者：
Zhou, Conghua
中科院分区：
文献类型：
--
作者：
Guo, De'en;Ma, Jiao;Zhou, Conghua
在基于碳电极的介观钙钛矿太阳能电池的低温制备过程中，SnO2修饰的介孔ZrO2替代介孔TiO2层，作为介孔电子传输层。X射线/紫外光电子能谱研究和电学测试表明，SnO2的修饰降低了介孔材料的功函数，同时提高了介孔材料的电导率。暂态光电压/光电流衰减曲线、阻抗谱和光致发光图谱表明，SnO2修饰了底层的ZrO2后，加速了电荷提取过程，但抑制了复合。这一改进有助于将低温器件的功率转换效率从4.70(&PLUSMN；0.85)%提高到10.15(+/-0.35)%，优化后的效率为13.37%(AM1.5G，100 mW/cm(2))。此外，还详细研究了SnO2改性层对功率转换性能的影响。研究表明，SnO2修饰的介孔ZrO2可以作为低温介观器件的有效电子传输层。由AIP出版公司独家授权出版。
SnO2 modified mesoporous ZrO2 is used to replace the mesoporous TiO2 layer and serves as a kind of mesoporous electron-transport layer during the low-temperature fabrication of mesoscopic perovskite solar cells that are based on carbon electrode. X-ray/ultraviolet photoelectron spectroscopy studies and electrical test observe that SnO2 modification brought down the work function while increasing the conductivity of the mesoporous ZrO2. Transient photovoltage/photocurrent decay curves, impedance spectroscopy, and photoluminescence mapping show that after the bottom layer of ZrO2 is modified by SnO2, the charge extraction process is accelerated while recombination is retarded. This modification helps to increase the power conversion efficiency from 4.70 (& PLUSMN;0.85)% to 10.15 (+/- 0.35)%, along with the optimized efficiency at 13.37% (AM1.5G, 100 mW/cm(2)) for the low-temperature devices. In addition, the effects of modification layers of SnO2 on the power conversion properties are carefully studied. This study shows that SnO2 modified mesoporous ZrO2 could serve as an efficient electron-transport layer for the low-temperature mesoscopic devices. Published under an exclusive license by AIP Publishing.