混合半导体材料中的离子和坐标键的混合:一种通用方法来实现稳固和可处理解决方案的共价/坐标网络结构
Xiuze Hei1, Wei Liu1,2, Kun Zhu1
1Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, New Jersey 08854, United States.
Journal of the American Chemical Society
|February 12, 2020
概括
研究人员从化铜和有机配体中开发出新的,高发光的混合材料. 这些无机半导体材料克服了可溶性问题,使得基于溶液的制造能够用于先进的应用.
科学领域:
- 材料科学
- 无机化学
- 固态化学
背景情况:
- 无机半导体材料具有优越的物理性能,但由于其刚性,共电结合的结构,具有较差的溶解性和溶液处理性.
- 这种局限性阻碍了它们在各个领域的应用,需要开发可加工的替代品.
研究的目的:
- 合成基于无机模块的新型,可溶液加工和高度发光的混合材料.
- 调查结构-属性关系,特别关注对协调模式和发光效应的联体效应.
主要方法:
- 使用铜 (CuI) 和量身定制的有机配体合成混合材料.
- 结构分析以确定协调模式 (μ1-MC或μ2-DC) 和粘合.
- 光发光 (PL) 光谱用于评估量子产量和温度依赖的辐射特性.
- 在各种溶剂中进行溶解性测试.
主要成果:
- 成功合成了一维 (1D) 离子链的化铜与有机配体协调,形成强大的混合材料.
- 在μ2-DC结构中显著抑制非辐射衰变,从而创下了高量子产量 (高达85%).
- 在极性离子溶剂中表现出显著的溶解性,与以前不溶性CuI基材料相比显著改善.
- 证实了光和热激活的延迟光对辐射的贡献,μ2-DC结构显示较少的非辐射衰变.
结论:
- 开发的方法产生了高度发光和可溶液处理的无机-有机混合材料.
- 连接体设计对于控制协调,结合强度和发光效率至关重要,μ2-DC结构尤其具有前景.
- 通过溶液加工,提高溶解度为大规模薄膜制造开辟了道路,扩大了基于CuI的材料的应用范围.
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