有效的单相调色双色发光,高量子产率大于100%用于信息加密和LED应用
Hanzhang Chen1, Duanliang Wang1, Ruoxian Hou1
1School of Physics and Physical Engineering, Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Qufu Normal University, Qufu 273165, PR China.
ACS applied materials & interfaces
|February 15, 2024
概括
两种新型的铜化物晶体表现出超高光发光量子产量超过100%,由多刺激子生成驱动. 这些材料显示可调节的多色发光,为先进的光电子设备和信息安全应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光电学是指光电子产品.
背景情况:
- 高效光发光散装材料对于信息安全和光电子技术至关重要.
- 开发具有可调色多色发光和多刺激子 (MEG) 生成的材料是一个重要的研究领域.
- 基于铜的化物是发光应用的有希望的候选物.
研究的目的:
- 合成和描述具有一维结构的新型散装Cu基化物晶体.
- 调查它们的光发光特性,包括刺激诱导的可调光发光和多刺激子生成 (MEG).
- 探索它们在信息加密和固态照明中的潜在应用.
主要方法:
- 溶剂蒸发方法用于晶体生长.
- 光发光谱学用于分析辐射光谱,量子产量和衰变寿命.
- 理论计算以了解发光机制.
主要成果:
- 两个1D批量基化物晶体, (C4H10NO) 4Cu2Br5·Br和 (C4H10NO) 4Cu2I5·I·H2O,已成功合成.
- (C4H10NO) 4Cu2I5·I·H2O显示了可调节的双色发光 (绿黄色和红色),高光发光量子产量 (PLQYs) 高达169.67%.
- (C4H10NO) 4Cu2Br5·Br表现出强烈的绿黄色辐射,PLQY超高198.22%,衰变寿命长106.9μs.
- 这两种材料均实现了超过100%的PLQY,绿黄色排放归因于MEG,红色排放归因于集群中心排放.
结论:
- 合成的基于Cu的化物晶体是第一个具有PLQY>100%的1D散装样本.
- 多刺激子生成 (MEG) 显著促进了绿黄色排放的超高PLQY.
- 这些材料显示了信息加密和固态照明应用的潜力.
- 该研究扩大了高性能发光材料的库,并促进了低维铜化物的应用.
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