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Antimony doping to enhance luminescence of tin(IV)-based hybrid metal halides
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2022-06-23 , DOI: 10.1039/d2qi00884j Kunjie Liu 1 , Shiqiang Hao 2 , Jindong Cao 1 , Jiawei Lin 3 , Liubing Fan 1 , Xusheng Zhang 1 , Zhongnan Guo 3 , Christopher Wolverton 2 , Jing Zhao 1 , Quanlin Liu 1
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2022-06-23 , DOI: 10.1039/d2qi00884j Kunjie Liu 1 , Shiqiang Hao 2 , Jindong Cao 1 , Jiawei Lin 3 , Liubing Fan 1 , Xusheng Zhang 1 , Zhongnan Guo 3 , Christopher Wolverton 2 , Jing Zhao 1 , Quanlin Liu 1
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Lead-based organic–inorganic metal halides (OIMHs) have recently attracted special attention due to their efficient broadband photoluminescence. However, the toxicity of lead poses a challenge for their further development. Here, we selected Sn(IV) as the metal center to synthesize the environmentally friendly and stable luminescent OIMHs (C9H15N3)2SnCl8 and (C9H15N3)2SnBr8 (C9H13N3 is 1-(2-pyridyl)piperazine). Both compounds possess zero-dimensional structures, crystallizing in the monoclinic space group P21/c, and their optical band gaps were experimentally determined to be 3.19 and 2.60 eV, respectively. Under UV excitation at room temperature, (C9H15N3)2SnCl8 exhibited double-peak emissions centered at 405 and 688 nm, which were attributed to the organic cation and inorganic octahedra, respectively. Upon introducing 5s2-lone-pair-containing Sb3+ in (C9H15N3)2SnCl8, self-trapped emission was promoted, and the photoluminescence quantum yield increased from ∼1% to ∼17.84%. This work suggests effective strategies for finding environmentally friendly stable OIMHs and for further enhancing the luminescence properties through lone-pair-containing cation doping.
中文翻译：
锑掺杂以增强锡（IV）基杂化金属卤化物的发光
铅基有机-无机金属卤化物（OIMHs）最近因其高效的宽带光致发光而引起了特别关注。然而，铅的毒性对其进一步发展提出了挑战。在这里，我们选择Sn( IV )作为金属中心，合成了环保稳定的发光OIMHs(C 9 H 15 N 3 ) 2 SnCl 8和(C 9 H 15 N 3 ) 2 SnBr 8 (C 9 H 13 N 3是1-(2-吡啶基)哌嗪)。两种化合物均具有零维结构，在单斜晶系空间群P 2 1 / c中结晶，经实验确定其光学带隙分别为 3.19 和 2.60 eV。在室温下的紫外激发下，(C 9 H 15 N 3 ) 2 SnCl 8表现出以405和688 nm为中心的双峰发射，这分别归因于有机阳离子和无机八面体。在(C 9 H 15 N 3 ) 2中引入含5s 2 -孤对的Sb 3+SnCl 8促进了自陷发射，光致发光量子产率从~1%提高到~17.84%。这项工作提出了寻找环境友好型稳定 OIMH 并通过含孤对阳离子掺杂进一步增强发光性能的有效策略。
更新日期：2022-06-23
中文翻译：
锑掺杂以增强锡（IV）基杂化金属卤化物的发光
铅基有机-无机金属卤化物（OIMHs）最近因其高效的宽带光致发光而引起了特别关注。然而，铅的毒性对其进一步发展提出了挑战。在这里，我们选择Sn( IV )作为金属中心，合成了环保稳定的发光OIMHs(C 9 H 15 N 3 ) 2 SnCl 8和(C 9 H 15 N 3 ) 2 SnBr 8 (C 9 H 13 N 3是1-(2-吡啶基)哌嗪)。两种化合物均具有零维结构，在单斜晶系空间群P 2 1 / c中结晶，经实验确定其光学带隙分别为 3.19 和 2.60 eV。在室温下的紫外激发下，(C 9 H 15 N 3 ) 2 SnCl 8表现出以405和688 nm为中心的双峰发射，这分别归因于有机阳离子和无机八面体。在(C 9 H 15 N 3 ) 2中引入含5s 2 -孤对的Sb 3+SnCl 8促进了自陷发射，光致发光量子产率从~1%提高到~17.84%。这项工作提出了寻找环境友好型稳定 OIMH 并通过含孤对阳离子掺杂进一步增强发光性能的有效策略。
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