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Superkinetic Growth of Oval Organic Semiconductor Microcrystals for Chaotic Lasing
Author(s) -
Dong Haiyun,
Zhang Chunhuan,
Shu FangJie,
Zou ChangLing,
Yan Yongli,
Yao Jiannian,
Zhao Yong Sheng
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202100484
Subject(s) - lasing threshold , materials science , semiconductor , organic semiconductor , crystal growth , nanotechnology , optoelectronics , crystal (programming language) , chemical vapor deposition , photonic crystal , anisotropy , optics , crystallography , wavelength , chemistry , physics , computer science , programming language
Synthesis of novel mesoscopic semiconductor architectures continually generates new photonic knowledge and applications. However, it remains a great challenge to synthesize semiconductor microcrystals with smoothly curved surfaces owing to the crystal growth anisotropy. Here, a superkinetic crystal growth method is developed to synthesize 2D oval organic semiconductor microcrystals. The solid source dispersion induces an exceptionally large molecular supersaturation for vapor deposition, which breaks the crystal growth anisotropy. The synthesized stadium‐shaped organic semiconductor microcrystals naturally constitute fully chaotic optical microresonators. They support low‐threshold lasing on high‐quality‐factor scar modes localized near the stadium boundary and directional laser emission assisted by the chaotic modes. These results will reshape the understanding of the crystal growth theory and provide valuable guidance for crystalline photonic materials design.