Role of the Selective Contacts in the Performance of Lead Halide Perovskite Solar Cells
Role of the Selective Contacts in the Performance of Lead Halide Perovskite Solar Cells
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DOI：
10.1021/jz500059v
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发表时间：
2014-02-20
影响因子：
5.7
通讯作者：
Mora-Sero, Ivan
中科院分区：
文献类型：
--
作者：
Juarez-Perez, Emilio J.;Wussler, Michael;Mora-Sero, Ivan
用阻抗谱系统地分析了电子选择接触和空穴选择接触对卤化铅钙钛矿杂化太阳电池性能的影响。将具有致密的二氧化钛和螺环-OMeTAD作为电子和空穴选择性接触的完整电池与没有一个或两个选择性接触的不完整电池进行比较，以突出每个接触的特定作用。描述了选择接触如何有助于提高电池的Ff，以及空穴选择接触如何是这种器件中高V的主要原因。我们确定重组率主要由选择性接触决定。这一事实对未来钙钛矿型太阳能电池的优化具有重要意义。最后，我们开发了一种分析结果的方法，并将其应用于三种不同的电子选择材料：二氧化钛、氧化锌和硫化镉。
The effect of electron- and hole-selective contacts in the final cell performance of hybrid lead halide perovskite, CH(3)NH(3)Pbl(3), solar cells has been systematically analyzed by impedance spectroscopy. Complete cells with compact TiO2 and spiro-OMeTAD as electron- and hole-selective contacts have been compared with incomplete cells without one or both selective contacts to highlight the specific role of each contact. It has been described how selective contacts contribute to enhance the cell FF and how the hole-selective contact is mainly responsible for the high V, in this kind of device. We have determined that the recombination rate is mainly governed by the selective contacts. This fact has important implication for the future optimization of perovskite solar cells. Finally, we have developed a method to analyze the results obtained, and it has been applied for three different electron-selecting materials: TiO2., ZnO, and CdS.