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Enhanced Efficiency of Carbon-Based Mesoscopic Perovskite Solar Cells through a Tungsten Oxide Nanoparticle Additive in the Carbon Electrode

机译:通过碳电极中的氧化钨纳米粒子添加剂提高了碳基介观钙钛矿太阳能电池的效率。

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摘要

This paper presents perovskite solar cells employed with WO3 nanoparticles embedded carbon top electrode. WO3 nanoparticles works as an inorganic hole-transport material (HTM) to promote the hole-extraction in the perovskite/carbon interface as revealed by efficiency, electrochemical impedance and external quantum efficiency measurements. As a result, a 40% enhancement of energy conversion efficiency has been achieved compared to the reference devices with the energy conversion efficiency of 10.77% under standard conditions. In addition, the Li-TFSI can modify the interface between electron-transport material (ETM) and perovskite, which may inhibit the recombination at the ETM/perovskite interface. The VOC of devices upon the modification of Li-TFSI is increased from 887.9 to 934.2 mV. This work highlights about the enlightenment of the effective performance of carbon-based mesoscopic PSCs by the introduction of HTM and the modification of interfaces.
机译:本文介绍了与WO3纳米粒子嵌入的碳顶电极一起使用的钙钛矿太阳能电池。 WO3纳米颗粒用作无机空穴传输材料(HTM),可促进钙钛矿/碳界面中的空穴提取,如效率,电化学阻抗和外部量子效率的测量所揭示。结果,与参考设备相比,标准条件下的能量转换效率为10.77%,能量转换效率提高了40%。此外,Li-TFSI可以修饰电子传输材料(ETM)和钙钛矿之间的界面,这可能会抑制ETM /钙钛矿界面上的复合。 Li-TFSI改性后的器件的VOC从887.9增加到934.2 mV。这项工作着重介绍了通过引入HTM和修改接口对碳基介观PSC的有效性能的启发。

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