Superkinetic Growth of Oval Organic Semiconductor Microcrystals for Chaotic Lasing. Issue 18 (30th March 2021)

• Record Type: Journal Article
• Authors: Dong, Haiyun; Zhang, Chunhuan; Shu, Fang‐Jie; Zou, Chang‐Ling; Yan, Yongli; Yao, Jiannian; Zhao, Yong Sheng
• Is Part Of: Advanced materials. Volume 33:Issue 18(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-03-30
• Subjects: chaotic lasing -- crystal growth -- organic lasers -- organic nanophotonics -- organic semiconductors; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.202100484
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract: 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. Abstract : A superkinetic crystal growth strategy is developed to synthesize semiconductor microcrystals with smoothly curved surfaces by breaking the crystal growth anisotropy. The oval organic semiconductor microcrystals constitute fully chaotic optical microresonators, which enable low‐threshold directional lasing.