PbBr-based layered perovskite film using the Langmuir-Blodgett technique
PbBr-based layered perovskite film using the Langmuir-Blodgett technique
复制标题
DOI：
10.1016/s0040-6090(00)01407-3
复制
发表时间：
2000-11-01
期刊：
影响因子：
2.1
通讯作者：
Oka, S
中科院分区：
文献类型：
--
作者：
Era, M;Oka, S
利用Langmuir-Blodgett(LB)技术，成功地制备了具有有机-无机超晶格结构的PbBr基层状钙钛矿薄膜。在含有溴化铅和甲基溴化铵的亚相上涂布单层的二十二碳基溴化铵。在压至30 mNm(-L)后，用LB技术在熔融石英衬底上沉积了单分子膜。沉积的薄膜在约390 nm处有明显的强吸收，这是PbBr基层状钙钛矿结构的激子特征，说明了层状钙钛矿结构的形成。此外，X射线衍射仪还表明，薄膜的层状结构平行于薄膜平面，在薄膜的X射线衍射图上只观察到PbBr基层状钙钛矿相(00n)对应的衍射峰。(C)2000 Elsevier Science S.A.保留所有权利。
Using the Langmuir-Blodgett (LB) technique, thin films of PbBr-based layered perovskite having an organic-inorganic superlattice structure were successfully prepared. A monolayer of docosylammonium bromide was spread on a subphase containing lead bromide and methylammonium bromide. After being pressed to 30 mNm(-l), the monolayer was deposited on fused quartz substrates by the LB technique. The deposited film showed sharp and strong absorptions at approximately 390 nm which is characteristic of exciton in PbBr-based layered perovskite, demonstrating the formation of the layered perovskite structure. In addition, the X-ray diffraction measurement demonstrated that the layer structure is oriented parallel to the film plane; only diffraction peaks corresponding to (00n) of the PbBr-based layered perovskite were observed in the X-ray diffraction profile of the deposited him. (C) 2000 Elsevier Science S.A. All rights reserved.