锡和氯掺杂提高CH3NH3PbI3杂化钙钛矿的稳定性

IF 1.2 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

Revista Mexicana De Fisica Pub Date : 2023-09-01 DOI:10.31349/revmexfis.69.051602

Bertha Oliva Aguilar Reyes, T. E. Soto, K. Sánchez, O. Navarro, A. Valdespino, D. Y. Torres Martínez

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引用次数: 0

摘要

近年来，杂化钙钛矿CH3NH3PbI3因其在高效太阳能电池制造中的潜在应用而受到广泛的研究。主要的挑战是避免这种化合物在工作条件下的不稳定。事实上，MAPbI3在形成几小时或几天后就开始分解成前体阶段。我们报道了用N-N二甲基甲酰胺前驱体溶液在化学处理过的玻璃衬底上得到的掺杂化合物CH3NH3Pb0.9Sn0.1I2.8Cl0.2和CH3NH3Pb0.75Sn0.25I2.5Cl0.5作为薄膜的稳定性监测。利用x射线衍射和紫外-可见区吸光度测量进行监测。在环境条件下，CH3NH3Pb0.75Sn0.25I2.5Cl0.5的四方对称性即使在600天后也几乎保持不变。掺钙钛矿的带隙值为1.44 eV。

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Stability improvement of CH3NH3PbI3 hybrid perovskite through tin and chlorine doping

In recent years, the hybrid perovskite CH3NH3PbI3 has been widely studied because of its potential application in the fabrication of high efficiency solar cells. The main challenge is to avoid destabilization of this compound under working conditions. Indeed, the MAPbI3 begins to decompose into the precursor phases, a few hours or days after being formed. We reported a stability monitoring of doped compounds CH3NH3Pb0.9Sn0.1I2.8Cl0.2 and CH3NH3Pb0.75Sn0.25I2.5Cl0.5 obtained as films from solutions of the precursors in N-N dimethylformamide on chemically treated glass substrates. The monitoring was carried out using X-Ray diffraction and absorbance measurements in the UV-Vis region. The tetragonal symmetry initially determined for the three compounds, remains almost unaltered for CH3NH3Pb0.75Sn0.25I2.5Cl0.5 even after 600 days, under environmental conditions. The bandgap value for this doped perovskite is 1.44 eV.

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来源期刊

Revista Mexicana De Fisica 物理-物理：综合

CiteScore

2.20

自引率

11.80%

发文量

审稿时长

4-8 weeks

期刊介绍： Durante los últimos años, los responsables de la Revista Mexicana de Física, la Revista Mexicana de Física E y la Revista Mexicana de Física S, hemos realizado esfuerzos para fortalecer la presencia de estas publicaciones en nuestra página Web ( http://rmf.smf.mx).