title: Self-Assembled Microdisk Lasers of Perylenediimides.
abstract: Organic solid-state lasers (OSSLs) have been a topic of intensive investigations. Perylenediimide (PDI) derivatives are widely used in organic thin-film transistors and solar cells. However, OSSLs based on neat PDIs have not been achieved yet, owing to the formation of H-aggregates and excimer trap-states. Here, we demonstrated the first PDI-based OSSL from whispering-gallery mode (WGM) hexagonal microdisk (hMD) microcavity of N,N'-bis(1-ethylpropyl)-2,5,8,11-tetrakis(p-methyl-phenyl)-perylenediimide (mp-PDI) self-assembled from solution. Single-crystal data reveal that mp-PDI molecules stack into a loosely packed twisted brickstone arrangement, resulting in J-type aggregates that exhibit a solid-state photoluminescence (PL) efficiency φ > 15%. Moreover, we found that exciton-vibration coupling in J-aggregates leads to an exceptional ultrafast radiative decay, which reduces the exciton diffusion length, in turn, suppresses bimolecular exciton annihilation (bmEA) process. These spectral features, plus the optical feedback provided by WGM-hMD microcavity, enable the observation of multimode lasing as evidenced by nonlinear output, spectral narrowing, and temporal coherence of laser emission. With consideration of high carrier-mobility associated with PDIs, hMDs of mp-PDI are attractive candidates on the way to achieve electrically driven OSSL.
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.|Graduate University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China.
authors.forename: Zhenyi
authors.initials: Z
authors.lastname: Yu
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.
authors.forename: Yishi
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices (BKLOMPD), Department of Chemistry, Capital Normal University , Beijing 100048, People's Republic of China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Liao
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices (BKLOMPD), Department of Chemistry, Capital Normal University , Beijing 100048, People's Republic of China.
authors.forename: Haihua
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices (BKLOMPD), Department of Chemistry, Capital Normal University , Beijing 100048, People's Republic of China.
authors.forename: Shuming
authors.initials: S
authors.lastname: Bai
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices (BKLOMPD), Department of Chemistry, Capital Normal University , Beijing 100048, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices (BKLOMPD), Department of Chemistry, Capital Normal University , Beijing 100048, People's Republic of China.
authors.forename: Zhenzhen
authors.initials: Z
authors.lastname: Xu
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.
authors.forename: Chunlin
authors.initials: C
authors.lastname: Sun
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.|Graduate University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China.
authors.forename: Xuedong
authors.initials: X
authors.lastname: Wang
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.|Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, People's Republic of China.
authors.forename: Jiannian
authors.initials: J
authors.lastname: Yao
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.|Beijing Key Laboratory for Optical Materials and Photonic Devices (BKLOMPD), Department of Chemistry, Capital Normal University , Beijing 100048, People's Republic of China.|Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, People's Republic of China.
authors.forename: Hongbing
authors.initials: H
authors.lastname: Fu