Abstract Silver iodobismuthates are semiconductor compounds potentially interesting for optoelectronics applications. In this work, a strategy is presented for the preparation by spin coating and at low temperature of well-crystallized, well-covering thin films with a AgBi2I7 global composition. The films are shown of high structural quality and the layer morphology has been controlled to produce either smooth or rough layers of similar thickness. We show that controlling the layer morphology and its interface with a hole transporting layer (Spiro-OMeTAD) plays an important role for the charge extraction and then the performances of devices. These films have been optimized and yielded perovskite -like solar cells with a maximum power conversion efficiency of 0.83%.

中文翻译：

---

具有受控表面形态的 AgBi 2 I 7 层，用于太阳能电池并改善电荷收集

摘要 碘化铋银是一种可能对光电子应用感兴趣的半导体化合物。在这项工作中，提出了一种通过旋涂和低温制备具有 AgBi2I7 全局成分的结晶良好、覆盖良好的薄膜的策略。薄膜显示出高结构质量，并且层形态已被控制以产生相似厚度的平滑或粗糙层。我们表明，控制层形态及其与空穴传输层（Spiro-OMeTAD）的界面对于电荷提取以及器件的性能起着重要作用。这些薄膜已经过优化，并产生了最大功率转换效率为 0.83% 的钙钛矿类太阳能电池。