Graduate School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japan.
Phys Rev Lett. 2010 Apr 16;104(15):156401. doi: 10.1103/PhysRevLett.104.156401. Epub 2010 Apr 14.
The electronic structure of rubrene single crystals was studied by angle-resolved ultraviolet photoelectron spectroscopy. A clear energy dispersion of the highest occupied molecular orbital-derived band was observed, and the dispersion width was found to be 0.4 eV along the well-stacked direction. The effective mass of the holes was estimated to be 0.65(+/-0.1)m0. The present results suggest that the carrier conduction mechanism in rubrene single crystals can be described within the framework of band transport.
通过角分辨紫外光电子能谱研究了并五苯单晶的电子结构。观察到最高占据分子轨道衍生能带的明显能量色散，并且在良好堆积方向上发现色散宽度为 0.4eV。空穴的有效质量估计为 0.65(+/-0.1)m0.。目前的结果表明，可以在能带输运的框架内描述并五苯单晶中的载流子传导机制。
