Zhou Zhonghao, Zhao Jinyang, Du Yuxiang, Wang Kang, Liang Jie, Yan Yongli, Zhao Yong Sheng
Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
University of Chinese Academy of Sciences, Beijing, 100049, China.
Angew Chem Int Ed Engl. 2020 Jul 13;59(29):11814-11818. doi: 10.1002/anie.202002580. Epub 2020 May 12.
A universal approach is demonstrated for realizing dual-wavelength lasing in organic core-shell structured microlaser arrays, which show great promise in serving as all-color laser display panels. By alternately printing hydrophilic and hydrophobic laser dye solutions on preprocessed substrates, precisely patterned core-shell heterostructure arrays were obtained. The spatially separated core and shell independently function as optical resonators to support dual-wavelength tunable lasing in each heterostructure. Such a general method enables to flexibly control the lasing wavelength of the core-shell microlasers across a wide spectral range by systematically designing the gain media. Using as-prepared microlaser arrays as display panels, full-color laser displays were achieved with a color gamut much larger than that of standard RGB space. These results provide insights for design concepts and device construction for novel optoelectronic applications.
展示了一种通用方法，用于在有机核壳结构微激光阵列中实现双波长激光发射，这种阵列在用作全色激光显示面板方面显示出巨大潜力。通过在预处理的基板上交替印刷亲水性和疏水性激光染料溶液，获得了精确图案化的核壳异质结构阵列。空间分离的核和壳独立地作为光学谐振器，以支持每个异质结构中的双波长可调谐激光发射。这种通用方法能够通过系统地设计增益介质，在宽光谱范围内灵活控制核壳微激光的激光波长。使用制备好的微激光阵列作为显示面板，实现了色域比标准RGB空间大得多的全色激光显示。这些结果为新型光电子应用的设计概念和器件构建提供了见解。
