Inkjet printing and instant chemical transformation of a CH3NH3PbI3/nanocarbon electrode and interface for planar perovskite solar cells.
Inkjet printing and instant chemical transformation of a CH3NH3PbI3/nanocarbon electrode and interface for planar perovskite solar cells.
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DOI：
10.1002/anie.201408638
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发表时间：
2014-11
影响因子：
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通讯作者：
Zhanhua Wei;Haining Chen;Keyou Yan;Shihe Yang
中科院分区：
文献类型：
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作者：
Zhanhua Wei;Haining Chen;Keyou Yan;Shihe Yang
通过一种具有精确图案和界面控制的喷墨印刷技术，首次展示了一种包含纳米碳空穴提取层的平面钙钛矿太阳能电池。通过设计碳加碘化甲铵（CH₃NH₃I）墨水，将碘化铅（PbI₂）原位转化为甲基铵碘化铅（CH₃NH₃PbI₃），瞬间构建了CH₃NH₃PbI₃活性层和碳空穴提取电极之间相互贯穿的无缝界面，与单独使用碳墨水相比，电荷复合显著减少。结果，相应的太阳能电池实现了高达11.60%的相当高的功率转换效率。这种方法为制造低成本、大规模、无金属电极但仍然高效的钙钛矿太阳能电池迈出了重要的一步。
A planar perovskite solar cell that incorporates a nanocarbon hole-extraction layer is demonstrated for the first time by an inkjet printing technique with a precisely controlled pattern and interface. By designing the carbon plus CH3NH3I ink to transform PbI2 in situ to CH3NH3PbI3, an interpenetrating seamless interface between the CH3NH3PbI3 active layer and the carbon hole-extraction electrode was instantly constructed, with a markedly reduced charge recombination compared to that with the carbon ink alone. As a result, a considerably higher power conversion efficiency up to 11.60% was delivered by the corresponding solar cell. This method provides a major step towards the fabrication of low-cost, large-scale, metal-electrode-free but still highly efficient perovskite solar cells.