衬底温度对蒸汽辅助沉积法制备钙钛矿薄膜微观结构的影响

发布时间：2018-06-22 19:08

  本文选题：同步辐射掠入射X射线衍射 + 钙钛矿薄膜　； 参考：《核技术》2016年06期

【摘要】：通过调控薄膜生长衬底温度,提出了一种改良的蒸汽辅助沉积法制备有机-无机混合钙钛矿薄膜,可以更为可控优化薄膜生长条件。用同步辐射掠入射X射线衍射(Grazing Incidence X-ray Diffraction,GIXRD)结合扫描电镜(Scanning Electron Microscope,SEM)、紫外可见吸收谱(UV-Visible Absorption Spectrum)等表征方法证明衬底温度对制备的钙钛矿薄膜质量具有重要的作用:较低的衬底温度(约70?C)有助于钙钛矿晶粒的形成,其结晶性、晶面择优生长取向均较好,同时具有较高的光吸收性能;当衬底温度升高时(100?C、125?C),所制备的钙钛矿薄膜结晶性变弱,晶体择优生长取向明显变差,光吸收性能随之下降。研究结果有助于进一步优化蒸汽辅助沉积法制备钙钛矿薄膜工艺。
[Abstract]:An improved vapor assisted deposition method was proposed to prepare organic-inorganic mixed perovskite films by adjusting the substrate temperature. The growth conditions of the films could be more controllable. Scanning electron microscopy (SEM), scanning electron microscopy (SEM) and UV-Visible Absorption spectrum (UV-Vis) were used to characterize the perovskite films. The results show that substrate temperature plays an important role in the quality of perovskite films. The bottom temperature (about 70 鈩，

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