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Highly Efficient Perovskite Solar Modules by Scalable Fabrication and Interconnection Optimization
ACS Energy Letters ( IF 19.3 ) Pub Date : 2018-01-09 00:00:00 , DOI: 10.1021/acsenergylett.7b01221
Mengjin Yang 1 , Dong Hoe Kim 1 , Talysa R. Klein 2 , Zhen Li 1 , Matthew O. Reese 2 , Bertrand J. Tremolet de Villers 1 , Joseph J. Berry 2 , Maikel F. A. M. van Hest 2 , Kai Zhu 1
Affiliation  

To push perovskite solar cell (PSC) technology toward practical applications, large-area perovskite solar modules with multiple subcells need to be developed by fully scalable deposition approaches. Here, we demonstrate a deposition scheme for perovskite module fabrication with spray coating of a TiO2 electron transport layer (ETL) and blade coating of both a perovskite absorber layer and a spiro-OMeTAD-based hole transport layer (HTL). The TiO2 ETL remaining in the interconnection between subcells significantly affects the module performance. Reducing the TiO2 thickness changes the interconnection contact from a Schottky diode to ohmic behavior. Owing to interconnection resistance reduction, the perovskite modules with a 10 nm TiO2 layer show enhanced performance mainly associated with an improved fill factor. Finally, we demonstrate a four-cell MA0.7FA0.3PbI3 perovskite module with a stabilized power conversion efficiency (PCE) of 15.6% measured from an aperture area of ∼10.36 cm2, corresponding to an active-area module PCE of 17.9% with a geometric fill factor of ∼87.3%.

中文翻译:

通过可扩展制造和互连优化实现高效钙钛矿太阳能电池组件

为了将钙钛矿太阳能电池(PSC)技术推向实际应用,需要通过完全可扩展的沉积方法来开发具有多个子电池的大面积钙钛矿太阳能电池组件。在这里,我们演示了钙钛矿组件制造的沉积方案,该工艺包括喷涂TiO 2电子传输层(ETL)以及钙钛矿吸收层和基于螺旋-OMeTAD的空穴传输层(HTL)的叶片涂层。保留在子电池之间互连中的TiO 2 ETL会显着影响模块性能。减小TiO 2的厚度可以将互连接触从肖特基二极管变为欧姆行为。由于降低了互连电阻,钙钛矿组件的TiO 2含量为10 nm层显示出增强的性能,主要与改善的填充因子有关。最后,我们展示了一种四孔MA 0.7 FA 0.3 PbI 3钙钛矿组件,其稳定的功率转换效率(PCE)为15.6%(从约10.36 cm 2的孔径面积测量),对应于有源区域组件的PCE为17.9%几何填充系数约为87.3%。
更新日期:2018-01-09
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