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南京大学朱嘉&朱鹏臣&晶澳尹海鹏&孙阳最新Science Advances:非共面多齿接触强化钙钛矿/硅叠层电池埋底界面

  • 2026-08-09 10:26:08
南京大学朱嘉&朱鹏臣&晶澳尹海鹏&孙阳最新Science Advances:非共面多齿接触强化钙钛矿/硅叠层电池埋底界面

论文简介

自组装单分子层与钙钛矿之间的埋底界面对倒置钙钛矿太阳能电池的器件性能和稳定性起着关键作用。然而,自组装分子的严重解吸和团聚会导致界面损失并缩短器件寿命。为此,我们设计了一种具有非共面分子构型和多官能团的新分子——5,5′,5″-(次氮基三-4,1-亚苯基)三[2-噻吩羧酸]。其非共面构型可有效抑制π-π堆积诱导的聚集,实现更有序的分子排列。其噻吩功能单元和三齿羧酸锚定基团增强了与衬底及上层钙钛矿的相互作用,这一协同效应得益于非共面构型,并经密度泛函理论计算证实。将该策略与常用的4-(3,6-二甲基-9H-咔唑-9-基)丁基膦酸相结合,可形成更均匀的自组装分子薄膜,改善钙钛矿结晶度并降低陷阱态密度。由此,宽带隙钙钛矿太阳能电池(~1.67电子伏特)实现了23.7%的冠军光电转换效率,并增强了热循环和光照老化稳定性。此外,基于该策略的钙钛矿/硅叠层器件效率达33.3%(认证效率33.1%),在实际工况下展现出优异的运行稳定性,户外运行30天后未观察到效率衰减。

论文链接

https://doi.org/10.1126/sciadv.aei2945

硅基太阳电池世界纪录

以上数据部分来源于NLR和马丁格林太阳能电池效率表(第68版)

链接1:https://www.nlr.gov/pv/cell-efficiency
链接2:https://doi.org/10.1016/j.joule.2026.102494
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