• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >Nitrogen Soaking Promotes Lattice Recovery in Polycrystalline Hybrid Perovskites
【24h】

Nitrogen Soaking Promotes Lattice Recovery in Polycrystalline Hybrid Perovskites

机译：氮浸泡促进多晶杂交钙酸盐中的晶格回收

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

On the basis of experiment and theory, a general paradigm is drawn that reconsiders N-2 not simply being an inert species but rather an effective healing gas molecule if entering a methylammonium lead iodide (MAPbl(3)) layer. Nitrogen is soaked into polycrystalline MAPbl(3) via a postdeposition mild thermal treatment under slightly overpressure conditions to promote its diffusion across the whole layer. A significant reduction of radiative recombination and a concurrent increase of light absorption, with a maximum benefit at 80 degrees C, are observed. Concomitantly, the current of holes drawn from the surfaces with nanometer resolution through a biased tip is raised by a factor of 3 under N-2. This is framed by a reduction of the barrier for carrier extraction. The achieved improvements are linked to a nitrogen-assisted recovery of intrinsic lattice disorder at the grain shells along with a simultaneous stabilization of undercoordinated Pb2+ and MA(+) cations through weak electrostatic interactions. Defect mitigation under N(2 )is reinforced in comparison to the benchmark behavior under argon. It is additionally unveiled that surface stabilization through N-2 is morphology-independent and thus can be applied after any preparation procedure. Such simple and low-cost strategy can complement other stabilizing solutions for perovskite solar cells or light-emitting diode engineering.
机译：在实验和理论的基础上，绘制了一般范式，即重新考虑N-2不仅仅是一种惰性物质，而是进入甲基铅碘化甲基碘化甲基碘化物（MapBl（3））层。通过在略微过压条件下通过后沉积温和的热处理将氮气浸泡在多晶MapBl（3）中以促进其在整个层上的扩散。观察到显着降低辐射重组和光吸收的同时增加，并且在80℃下具有最大益处。同时，通过偏压尖端从具有纳米分辨率的表面汲取的孔的电流在N-2下升高了3倍。这是通过减少载体提取的屏障的框架。通过弱静电相互作用，达到谷物壳在谷物壳体上的氮气辅助恢复的氮气辅助恢复的氮气辅助恢复与弥补的PB2 +和MA（+）阳离子同时稳定。与氩气下的基准行为相比，不加强N（2）下的缺陷缓解。另外推出的是通过N-2的表面稳定化是形态学 - 无关，因此可以在任何制备程序之后施加。这种简单和低成本的策略可以补充钙钛矿太阳能电池或发光二极管工程的其他稳定解决方案。

著录项

  • 来源
    《Advanced energy materials》 |2019年第12期|1803450.1-1803450.12|共12页
  • 作者

    Alberti Alessandra; Deretzis Ioannis; Mannino Giovanni; Smecca Emanuele; Giannazzo Filippo; Listorti Andrea; Colella Silvia; Masi Sofia; La Magna Antonino;

  • 作者单位

    CNR IMM Zona Ind Str 8 5 I-95121 Catania Italy;

    CNR IMM Zona Ind Str 8 5 I-95121 Catania Italy;

    CNR IMM Zona Ind Str 8 5 I-95121 Catania Italy;

    CNR IMM Zona Ind Str 8 5 I-95121 Catania Italy;

    CNR IMM Zona Ind Str 8 5 I-95121 Catania Italy;

    Univ Salento Dipartimento Matemat & Fis E De Giorgi Via Arnesano I-73100 Lecce Italy|Ist Nanotecnol CNR Nanotec Dist Tecnol Via Arnesano 16 I-73100 Lecce Italy;

    Univ Salento Dipartimento Matemat & Fis E De Giorgi Via Arnesano I-73100 Lecce Italy|Ist Nanotecnol CNR Nanotec Dist Tecnol Via Arnesano 16 I-73100 Lecce Italy;

    Univ Salento Dipartimento Matemat & Fis E De Giorgi Via Arnesano I-73100 Lecce Italy|Ist Nanotecnol CNR Nanotec Dist Tecnol Via Arnesano 16 I-73100 Lecce Italy;

    CNR IMM Zona Ind Str 8 5 I-95121 Catania Italy;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    defects; in situ; mitigation; stability; surfaces; thermal cycle;

    机译：缺陷;原位;缓解;稳定性;表面;热周期;

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