Nucleation in situ of perylene crystal by femtosecond laser induced cavitation

Organic semiconductor single crystal materials have broad application prospects in the field of high-performance optoelectronic devices because of their highly ordered structure, few defects, and high carrier mobility. However, it is difficult to control the nucleation location of crystal formation in the current commonly used crystal growth methods including physical vapor transport and solution processing, which makes it difficult to manufacture organic crystal devices. Laser-induced crystallization technology is expected to solve this problem. In this study, we demonstrated nucleation in situ of a perylene crystal by femtosecond laser induced cavitation. The results show that the crystallization of perylene crystals induced by the femtosecond laser is mainly due to the aggregation effect by laser cavitation bubbles caused by multiphoton absorption. This strategy facilitates the application of organic single crystals to optoelectronic devices.

Preparation, optical property and field-effect mobility investigation of stable white-emissive doped organic crystal

The structural, optical and charge-transport properties of a white-emissive doped organic crystal have been investigated.

The thermodynamic characteristics of organic crystal growth by physical vapor transport: towards high-quality and color-tunable crystal preparation

Organic crystals grown at lower temperature have tighter molecular stacking, sharper diffraction peaks and higher quality.