A gradient engineered hole-transporting material for monolithic series-type large-area perovskite solar cells
A gradient engineered hole-transporting material for monolithic series-type large-area perovskite solar cells
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DOI：
10.1039/c7ta03890a
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发表时间：
2017-10
影响因子：
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通讯作者：
Y. Tu;Jihuai Wu;Xin He;Panfeng Guo;Tongyue Wu;Hui Luo;Quan-zhen Liu;Qihui Wu;Jian-ming Lin-Jian-ming-Li
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文献类型：
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作者：
Y. Tu;Jihuai Wu;Xin He;Panfeng Guo;Tongyue Wu;Hui Luo;Quan-zhen Liu;Qihui Wu;Jian-ming Lin-Jian-ming-Li
进一步提高效率主要依赖于减少钙钛矿太阳能电池活性层之间的界面损失。一种梯度工程空穴传输材料的设计有望调整钙钛矿太阳能电池中的界面损失。在这项工作中，我们报道了梯度工程，使空穴传输材料（spiro-OMeTAD）分散在钙钛矿层的上部。光致发光测量表明，钙钛矿-螺旋- ometad梯度膜的空穴提取增强。小面积器件的最大PCE为19.16%，稳态效率为18.01%。此外，我们还基于梯度工程组装了整体式串联型大面积钙钛矿太阳能电池。活性面积为1.01 cm2的大面积钙钛矿太阳能电池的PCE为16.61%。此外，单片串联型大面积钙钛矿太阳能电池二元组件的Voc为2.095 V，三元组件的Voc为3.104 V。
Further efficiency enhancement mainly relies on decreasing the interface losses between the active layers in perovskite solar cells. The design of a gradient engineered hole-transporting material is expected to tune the interface losses in perovskite solar cells. In this work, we reported gradient engineering that afforded the hole-transport material (spiro-OMeTAD) dispersed in the upper part of the perovskite layer. Photoluminescence measurements indicated an enhanced hole extraction from the perovskite–spiro-OMeTAD gradient film. And a maximum PCE of 19.16% and a steady-state efficiency of 18.01% were obtained for the small-area device. Furthermore, we assembled monolithic series-type large-area perovskite solar cells based on gradient engineering. The large-area perovskite solar cell with an active area of 1.01 cm2 obtained a PCE of 16.61%. Moreover, monolithic series-type large-area perovskite solar cells showed a Voc of 2.095 V for the binary module and a Voc of 3.104 V for the ternary module, respectively.