Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China.
School of Information Engineering, College of Science and Technology, Ningbo University, Ningbo, 315300, China.
Chem Commun (Camb). 2023 Jul 4;59(54):8452-8455. doi: 10.1039/d3cc02084c.
The all-inorganic CsPbI perovskite presents promising prospects due to its suitable band gap and nonvolatile nature, while serious nonradiative recombination and unmatched energy level alignment hinder its further developments. Here, a facile and effective surface treatment strategy is proposed to modify the CsPbI surface with ethanolamine, leading to significantly reduced defects, and ameliorated band alignment and morphology. Consequently, a champion power conversion efficiency of 18.41% with improved stability is achieved for the inverted CsPbI solar cells.
全无机 CsPbI 钙钛矿由于其合适的带隙和非易失性而具有广阔的前景，但其严重的非辐射复合和不匹配的能级排列阻碍了其进一步的发展。在这里，提出了一种简便有效的表面处理策略，即用乙醇胺对 CsPbI 表面进行修饰，从而显著降低了缺陷，改善了能带排列和形貌。因此，对于倒置的 CsPbI 太阳能电池，获得了 18.41%的冠军功率转换效率和提高的稳定性。
