標題: Anisotropic exciton relaxation in nanostructured metal (Zn and F16Zn)-phthalocyanine
作者: Ahn, Hyeyoung
Liou, Wei-Hyun
Chen, Huang-Ming Philip
Hsu, Chia-Hung
光電工程學系
Department of Photonics
公開日期: 9-二月-2015
摘要: We report ultrafast excited state dynamics of zinc phthalocyanine and zinc hexadecafluoro phthalocyanine thin films which have nanorod-like structures. Excitons in the singlet states undergo multi-exponential relaxation processes to the ground state and the singlet lifetime within a few tens of picoseconds is attributed to the diffusion-limited exciton annihilation process. Diffusive migration of the singlet excitons shows the anisotropic lifetimes depending on the polarization of probe beam. Similar anisotropy is observed in the X-ray diffraction data which exhibits long-range alignment of molecular columns along the long axis of nanorod, whereas disordered arrangement in lateral direction to the axis of nanorod. (C) 2015 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.23.003230
http://hdl.handle.net/11536/124330
ISSN: 1094-4087
DOI: 10.1364/OE.23.003230
期刊: OPTICS EXPRESS
Volume: 23
起始頁: 3230
結束頁: 3235
顯示於類別:期刊論文