期刊
JOURNAL OF CHEMICAL PHYSICS
卷 146, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4961460
关键词
-
资金
- DFG within the CRC 951 - Hybrid Inorganic/Organic Systems for Opto-Electronics (HIOS)
We study nucleation and multilayer growth of the perylene derivative PTCDI-C8 and find a persistent layer-by-layer growth, transformation of island shapes, and an enhancement of molecular diffusivity in upper monolayers (MLs). These findings result from the evaluation of the ML-dependent island densities, obtained by in situ real-time grazing incidence small angle X-ray scattering measurements and simultaneous X-ray growth oscillations. Complementary ex situ atomic force microscopy snapshots of different growth stages agree quantitatively with both X-ray techniques. The rate and temperature-dependent island density is analyzed using different mean-field nucleation models. Both a diffusion limited aggregation and an attachment limited aggregation model yield in the first two MLs the same critical nucleus size i, similar surface diffusion attempt frequencies in the 10(19)-10(20) s(-1) range, and a decrease of the diffusion barrier E-d in the 2nd ML by 140 meV. Published by AIP Publishing.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据