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Mn-Doped M2CdCl4 (M = CH3NH3+, C2H8N+, and C3H10N+) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-01-24 , DOI: 10.1021/acs.inorgchem.3c03751 Yuchen Xu 1 , Wenxiao Dong 2 , Peng Su 3 , Tianchun Lang 3 , Huichao He 1 , Hanmei Jiang 1 , Bi Jia 1 , Xiaoyan Liu 1 , Tao Han 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-01-24 , DOI: 10.1021/acs.inorgchem.3c03751 Yuchen Xu 1 , Wenxiao Dong 2 , Peng Su 3 , Tianchun Lang 3 , Huichao He 1 , Hanmei Jiang 1 , Bi Jia 1 , Xiaoyan Liu 1 , Tao Han 1
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Layered hybrid perovskites show significant advantages in the field of optoelectronics. However, the low quantum efficiency and complex preparation methods limit their applications. In this work, we developed a series of perovskite powders with a two-dimensional (2D) layered structure of organic–inorganic hybrid metal halides M2CdCl4:x%Mn (M = CH3NH3+, C2H8N+, C3H10N+) via facile mechanochemical methods. The prepared manganese Mn-doped MA2CdCl4 produces orange emission at 605 nm under both 254 and 420 nm excitation, which originates from a dual excitation channel competition mechanism, and its excitation channel could be changed with the increase of Mn2+ ion concentration. Typically, MA2CdCl4:20%Mn powder exhibits high photoluminescence quantum yield (PLQY) close to 90% at 605 nm due to the organic amine ions enlarging the Mn–Mn interlayer distances. In addition, we prepared MA2CdCl4:x%Mn@PVA flexible films, which also exhibit good luminescence at 254 nm excitation and were unexpectedly found to have a better response to Cs+, which could be a candidate for anticounterfeiting applications.
中文翻译：
基于简单机械化学合成的Mn掺杂M2CdCl4（M = CH3NH3+、C2H8N+和C3H10N+）层状杂化钙钛矿及其柔性薄膜
层状杂化钙钛矿在光电领域显示出显着的优势。然而，低量子效率和复杂的制备方法限制了它们的应用。在这项工作中，我们开发了一系列具有二维（2D）层状结构的有机-无机杂化金属卤化物M 2 CdCl 4 : x %Mn (M = CH 3 NH 3 + , C 2 H 8 N + , C 3 H 10 N + ) 通过简单的机械化学方法。所制备的锰掺杂MA 2 CdCl 4在254和420 nm激发下均在605 nm处产生橙光发射，这源于双激发通道竞争机制，并且其激发通道可以随着Mn 2+离子浓度的增加而改变。通常，由于有机胺离子增大了 Mn-Mn 层间距离，MA 2 CdCl 4 :20%Mn 粉末在 605 nm 处表现出接近 90% 的高光致发光量子产率 (PLQY)。此外，我们制备了MA 2 CdCl 4 : x %Mn@PVA柔性薄膜，该薄膜在254 nm激发下也表现出良好的发光性，并且意外地发现对Cs +具有更好的响应，这可能是防伪应用的候选者。
更新日期：2024-01-24
中文翻译：
基于简单机械化学合成的Mn掺杂M2CdCl4（M = CH3NH3+、C2H8N+和C3H10N+）层状杂化钙钛矿及其柔性薄膜
层状杂化钙钛矿在光电领域显示出显着的优势。然而，低量子效率和复杂的制备方法限制了它们的应用。在这项工作中，我们开发了一系列具有二维（2D）层状结构的有机-无机杂化金属卤化物M 2 CdCl 4 : x %Mn (M = CH 3 NH 3 + , C 2 H 8 N + , C 3 H 10 N + ) 通过简单的机械化学方法。所制备的锰掺杂MA 2 CdCl 4在254和420 nm激发下均在605 nm处产生橙光发射，这源于双激发通道竞争机制，并且其激发通道可以随着Mn 2+离子浓度的增加而改变。通常，由于有机胺离子增大了 Mn-Mn 层间距离，MA 2 CdCl 4 :20%Mn 粉末在 605 nm 处表现出接近 90% 的高光致发光量子产率 (PLQY)。此外，我们制备了MA 2 CdCl 4 : x %Mn@PVA柔性薄膜，该薄膜在254 nm激发下也表现出良好的发光性，并且意外地发现对Cs +具有更好的响应，这可能是防伪应用的候选者。
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