• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >High quality perovskite films fabricated from Lewis acid-base adduct through molecular exchange
【24h】

High quality perovskite films fabricated from Lewis acid-base adduct through molecular exchange

机译：由路易斯酸碱加合物通过分子交换制成的高质量钙钛矿薄膜

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We describe a facile method to fabricate high quality CH3NH3PbI3 films with smooth surface and without residual PbI2 through molecular exchange, rather than ionic intercalation. It forms a Lewis acid- base adduct of PbI2.xDMF when PbI2 precipitates from DMF solution. The lattice of PbI2 is expanded more than 30% due to the intercalation of DMF. With the lattice expansion, CH3NH3I (MAI) diffuses into the PbI2.xDMF lattice easily, and the PbI2.xDMF converts completely to CH3NH3PI3 by molecular exchange between DMF and MAI. The lattice volume changes little during the molecular exchange in PbI2.xDMF. Thus, it is easy to fabricate high quality perovskite films from the Lewis adduct of PbI2.xDMF. The perovskite solar cells fabricated from the Lewis adduct exhibit higher photovoltaic performance than those from the PbI2 films. This work reveals the important role of common solvent in controlling the quality of perovskite films.
机译：我们描述了一种简便的方法来制造高质量的CH3NH3PbI3膜，该膜具有光滑的表面并且没有通过分子交换而不是离子嵌入的残留PbI2。当PbI2从DMF溶液中沉淀时，它会形成PbI2.xDMF的路易斯酸碱加成物。由于DMF的插入，PbI2的晶格扩展了30％以上。随着晶格扩展，CH3NH3I（MAI）容易扩散到PbI2.xDMF晶格中，并且PbI2.xDMF通过DMF和MAI之间的分子交换而完全转换为CH3NH3PI3。在PbI2.xDMF中进行分子交换时，晶格体积变化很小。因此，由PbI2.xDMF的路易斯加合物容易制造高质量的钙钛矿薄膜。由路易斯加合物制造的钙钛矿太阳能电池具有比由PbI2薄膜制造的钙钛矿太阳能电池更高的光伏性能。这项工作揭示了普通溶剂在控制钙钛矿薄膜质量方面的重要作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号