Download scientific diagram | XRD pattern of the synthetic MAI crystal from publication: Preparation and characterization of planar heterojunction perovskite solar cells based on...

As mentioned previously, there is no XRD evidence for MAI due to the lack of order, but MAI should still be present in the quasi-liquid phase below the melting temperature (190 °C). To examine the possibility of MAI evaporation, thermal gravimetric analysis of …

2021年7月27日 · In this work, we investigate the growth of methylammonium lead iodide (MAPbI\ (_3\)) absorbers prepared by co-evaporation of methylammonium iodide (MAI) and lead iodide (PbI\ (_2\)) using an in...

2022年11月13日 · The PbI 2-DMSO-assisted MAPbI 3 wafer shows higher XRD intensity for the (110) and (220) peaks than the conventional wafer suggesting better crystallinity in line with the SEM images. The steady-state photoluminescence (PL) and time-resolved photoluminescence (TRPL) properties of the conventional and PbI 2 -DMSO assisted MAPbI 3 perovskite ...

2021年9月3日 · The chemical and crystal structures of methylammonium iodide (MAI), methylammonium bromide (MABr), and formamidinium iodide (FAI) are confirmed, and the experimental ATR-FTIR spectrum and XRD pattern of formamidinium bromide (FABr) are …

MAI powder is dissolved in isopropanol (IPA) to produce an IPA-MAI solution, then PbI2 is used in N, N-dimethylformamide (DMF) as an aprotic solvent. Here, a small amount of DMF was used with...

2021年7月22日 · Further addition of 32–59% methylammonium iodide (MAI) during the co-evaporation process leads to good absorption properties and high PSC efficiencies of 20.4%. In addition, excellent stability is achieved for optimized MAI to FAI ratios, maintaining 100% of the initial PSC performance after 1000 h under constant operation.

Download scientific diagram | (a) X-ray diffraction (XRD) pattern according to the concentration of the film post-treated with methylammonium iodide (MAI). (b) Extended XRD region around...

在这项工作中，我们使用原位 X 射线研究了通过共蒸发甲基碘化铵 ( MAI ) 和碘化铅 ( PbI \ (_ 2\ ) ) 制备的甲基碘化铅铵 ( MAPbI \ (_3\) ) 吸收剂的生长衍射设置。 这种设置使我们能够表征生长薄膜的结晶和相演化。 MAI 蒸发期间，腔室总压力急剧增加。 因此，我们假设腔室总压力主要由沉积期间的 MAI 气氛形成，并用它来控制 MAI 蒸发。 首先，我们通过在恒定的 PbI \ (_2\)通量率下改变MAI压力来优化MAI 与 PbI \ (_2\) 冲击比。 我们发现太阳能电池器件的性能对腔室压力的强 …

合成粉末形式的甲基碘化铵（MAI）和甲基溴化铵（MABr）反应物。使用超声波喷雾热解 (USP) 方法将锡基钙钛矿 (MASnI x Br 3− x ( x = 3, 2, 1, 0)) 作为薄膜沉积在玻璃基板上。X 射线衍射 (XRD) 用于检查合成的 MAI/MABr 粉末和钙钛矿薄膜的晶体学特征。通过改变 I/Br 比率，XRD 峰 …