Suppressing Nonradiative Processes of Organic Dye with Metal–Organic Framework Encapsulation toward Near-Infrared Solid-State Microlasers

• DOI: 10.1021/acsami.8b13566
• Publication Date: 2018-09-20T20:19:14Z
• Authors: Yuan Liu; Haiyun Dong; Kang Wang; Zhenhua Gao; Chunhuan Zhang; Xiaolong Liu; Yong Sheng Zhao; Fengqin Hu
• Keywords: Encapsulation

Organic materials are an important class of gain media for fabricating miniaturized lasers because they combine fabrication simplicity with wide spectral coverage and tunability. However, progress toward near-infrared (NIR) organic solid-state has been limited serious nonradiative processes originating from the severe intermolecular interaction in condensed state. Here, we develop a strategy to realize room-temperature NIR microscale through encapsulating dyes into cavities metal–organic frameworks (MOFs). The spatial confinement dye molecules within MOF pores contributes suppressing multiple (i.e., aggregation-caused quenching exciton–exciton annihilation). This results much higher radiative efficiency thus easier population inversion low-threshold lasing. Furthermore, lasing wavelength can be further expanded based on tailorable energy levels molecules. will provide useful enlightenment development laser sources new photonic applications.