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在MAPbCl₃的阴极光发光中,化烯矿单晶

Anna Yu Samsonova¹, Mariia P Mamaeva¹, Aleksei O Murzin¹

¹Saint Petersburg State University, Ulyanovskaya d.1, Saint Petersburg 198504, Russia.

The journal of physical chemistry letters

|September 6, 2024

概括

甲基化 (MAPbCl3) 单晶体从刺激子和缺陷中呈现出明显的发光. 这种化矿对电子束辐射具有抗性,这表明光电子学中可能存在缺陷修饰的可能性.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
光电学是指光电子产品.

背景情况:

化矿,像甲基化 (MAPbCl3),是具有近紫外线带隙的半导体.
这些材料对光电子和光子应用具有前景.
低温发光光谱学揭示了MAPbCl3.3中复杂的辐射结构.

研究的目的:

研究MAPbCl3单晶在70K的阴极发光.
定位不同的排放源,包括刺激子和与缺陷相关的状态.
在电子束辐射下研究缺陷的形成,以评估材料的稳定性.

主要方法:

在70K的Cathodoluminescence光谱学.
电子束激发用于探测局部发射器.
从原始和被辐射的晶体区域分析发光光谱.

主要成果:

在未受损的MAPbCl3样本中观察到明显的刺激子发光.
识别出来自异位和晶体损伤区域的与缺陷相关的排放.
证明MAPbCl3对电子束辐射具有抗性.

结论:

电子束辐射可以在MAPbCl3.3中区分刺激和缺陷发光.
观察到的对辐射的耐受性支持化 Perowskites 的缺陷耐受性.
这一发现为先进的应用开辟了化矿的电子束修饰的可能性.

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