High performance perovskite solar cells with functional highly porous TiO2 thin films constructed in ambient air
High performance perovskite solar cells with functional highly porous TiO2 thin films constructed in ambient air
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DOI：
10.1016/j.solmat.2016.03.001
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发表时间：
2016-07
影响因子：
6.9
通讯作者：
Andreas Rapsomanikis;Dimitrios Karageorgopoulos;P. Lianos;E. Stathatos
中科院分区：
文献类型：
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作者：
Andreas Rapsomanikis;Dimitrios Karageorgopoulos;P. Lianos;E. Stathatos
在本工作中，我们报道了高介孔和大孔tio2薄膜的合成，作为在环境空气中提高异质结固体钙钛矿太阳能电池性能的有效支架。采用溶胶-凝胶法制备tio2薄膜，以Pluronic P-123嵌段共聚物为有机模板，采用旋涂法在导电玻璃基片上制备tio2薄膜。该薄膜被用于构建高效的钙钛矿太阳能电池，在环境条件下，CH3NH3PbI3−xclx混合卤化物钙钛矿作为光收集器，P3HT聚合物作为空穴导体。非常粗糙且多孔的tio2薄膜被证明是钙钛矿生长的优良载体材料。tio2电子传输层的结构性质，厚度、粒径和孔隙率对整体转换效率有很大影响。优化后的结构和材料组成具有较高的电流密度，jsc为23.8 mA/cm2， voc为0.995 V，填充系数为0.58。这些在环境条件下制备的太阳能电池以P3HT聚合物为空穴导电材料，平均功率转换效率为13.7%，是有记录以来最高的。
In the present work we report the synthesis of highly meso- and macro-porous thin TiO2films as efficient scaffolds for improved performance of heterojunction solid state perovskite solar cells made in Fambient air. TiO2films were prepared using sol–gel process and Pluronic P-123 block copolymer as organic template while they were formed on conductive glass substrates by spin-coating method. The films were employed to the construction of very efficient perovskite solar cells made at ambient conditions where CH3NH3PbI3−xClxmixed halide perovskite was used as light harvester and P3HT polymer as hole conductor. The very rough and highly porous TiO2films proved to be an excellent host material for perovskite growth. The structural properties of the TiO2electron transport layer, thickness, particle size and porosity, strongly affected the overall conversion efficiency. The optimal structure and materials composition exhibited a notably high current densityJscof 23.8 mA/cm2,Vocof 0.995 V and fill factor of 0.58. These solar cells prepared under ambient conditions yielded an average power conversion efficiency of 13.7% among the best ever recorded with P3HT polymer as hole conducting material.