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Reticulated Mesoporous TiO2 Scaffold, Fabricated by Spray Coating, for Large‐Area Perovskite Solar Cells
Energy Technology ( IF 3.6 ) Pub Date : 2019-10-03 , DOI: 10.1002/ente.201900922
Andrei Gabriel Tomulescu 1, 2 , Viorica Stancu 1 , Cristina Beşleagă 1 , Monica Enculescu 1 , George Alexandru Nemneş 3, 4 , Mihaela Florea 1 , Viorel Dumitru 1 , Lucian Pintilie 1 , Ioana Pintilie 1 , Lucia Leonat 1
Affiliation  

Development of reproducible, low‐cost fabrication technologies that are readily adaptable to large‐scale production, is one of the main challenges in the field of perovskite solar cells (PSCs). So far, for all the other layers in a solar cell, large‐area deposition methods have been adapted, except for mesoporous fabrication. Herein, the fabrication of mesoporous TiO2 scaffolds using a large‐area deposition technique, such as spray coating, is shown. Moreover, this technique induces the formation of a very specific reticulated structure with well‐delimited, oval‐shaped cavities. The cavities have irregular dimensions, with diameters in the range of 3–7 μm, ≈350 nm height, resulting in an overall increase in roughness of one order of magnitude, compared with the spin‐coated mesoporous scaffold. Using this rough structured mesoporous TiO2 in PSCs not only does not affect the efficiency of solar cells but actually improves it from an average of 10% to 12% in comparison with the devices containing a spin‐coated mesoporous scaffold.

中文翻译:

用于喷涂钙钛矿太阳能电池的网状介孔TiO2支架,采用喷涂工艺制备。

钙钛矿型太阳能电池(PSC)领域的主要挑战之一是开发可复制,低成本的制造技术,以适应大规模生产。到目前为止,除了中孔制造外,对于太阳能电池中的所有其他层,已经采用了大面积沉积方法。在此,介孔TiO 2的制备显示了使用大面积沉积技术(例如喷涂)的脚手架。此外,该技术还可以诱导形成一个非常特殊的网状结构,该结构具有界限分明的椭圆形空腔。腔体的尺寸不规则,直径在3–7μm,约350 nm的高度范围内,与旋涂的介孔支架相比,其粗糙度总体上增加了一个数量级。在PSC中使用这种粗糙的结构化介孔TiO 2不仅不影响太阳能电池的效率,而且与包含旋涂介孔支架的设备相比,实际上将其平均提高了10%至12%。
更新日期:2019-10-03
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