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首页> 外文期刊>Solar Energy >Relaying delivery of excited state electrons for fully printable perovskite solar cells via ultra-thin gradient PCBM/perovskite heterojunction
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Relaying delivery of excited state electrons for fully printable perovskite solar cells via ultra-thin gradient PCBM/perovskite heterojunction

机译:通过超薄梯度PCBM /钙钛矿异质结为完全可印刷钙钛矿太阳能电池传递激发态电子

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摘要

The high-temperature fabrication process for fully printable perovskite solar cell (PSC) limits its synchronization passivation with device fabrication. Herein we have creatively developed a post-decoration process (PDP) using phenyl-C-61-butyric acid methyl ester (PCBM) in chlorobenzene anti-solvent, which not only induces the regrowth of perovskite crystals reducing grain boundaries, but also realizes the relaying delivery of excited state electrons from perovskite to TiO2 in virtue of the ultra-thin PCBM/perovskite heterojunction. The champion device with PCBM achieved a power conversion efficiency of 14.12% with an open circuit voltage of 0.91 V, a current density of 24.03 mA/cm(2) and a fill factor of 0.64. It provides a simple approach towards high efficiency without sacrificing long-term stability of fully printable perovskite solar cells.
机译:完全可印刷钙钛矿太阳能电池(PSC)的高温制造工艺限制了其与器件制造的同步钝化。在此,我们创造性地开发了一种在氯苯反溶剂中使用苯基-C-61-丁酸甲酯(PCBM)进行的后修饰工艺(PDP),该工艺不仅可以诱导钙钛矿晶体的再生长大,从而减少晶界,而且可以实现借助超薄的PCBM /钙钛矿异质结,将激发态电子从钙钛矿传递到TiO2。带PCBM的冠军器件在开路电压为0.91 V,电流密度为24.03 mA / cm(2)和填充系数为0.64的情况下实现了14.12%的功率转换效率。它提供了一种简单的方法来提高效率,而又不会牺牲可完全印刷的钙钛矿型太阳能电池的长期稳定性。

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