制备高效锡基钙钛矿太阳能电池的自组装单分子膜(SAM)形成剂

据报道，以铅基钙钛矿作为光吸收层的情况下，2PACz和MeO-2PACz等SAM形成剂提高了钙钛矿太阳能电池(PSC)的效率¹⁾。使用这些咔唑基SAM形成剂的优势有：分子可设计性，优异的机械灵活性，无需掺杂剂，可忽略的透光率损失，大面积可扩展性及共形和无损的电接触。这些SAM作为空穴选择性中间层，可使铅基PSC达到20%以上的能量转换效率(PCE) ²⁾。在以SAM为中间层的PSC-硅串联太阳能电池中，其PCE能达到29%以上³⁾。
最近，Diau等人报道了使用2PACz和MeO-2PACz 等SAM形成剂制备的锡基钙钛矿太阳能电池 (器件结构：ITO/SAM/FASnI₃/C₆₀/BCP/Ag) ⁴⁾。使用MeO-2PACz作为SAM形成剂，在最优条件下得到器件的PCE为6.5%。器件的稳定性测试显示，在手套箱中80%的初始PCE能维持1900小时。这项工作为SAM基无铅钙钛矿太阳能电池的未来大规模生产提出了一个新的发展方向。

关键词

C3663

2PACz

D5798

MeO-2PACz

M3359

Me-4PACz

T3449

Tin(II) Iodide [for Perovskite precursor]

F0974

Formamidine Hydroiodide (Low water content)

F1263

Formamidine Hydroiodide (99.99%, trace metals basis) [for Perovskite precursor]

F1232

Fullerene C₆₀ (purified by sublimation) [for organic electronics]

文献

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