【作者】 曾雄辉； 王立铎； 乔娟； 董桂芳； 邱勇；

【Author】 Xionghui Zeng, Liduo Wang*, Juan Qiao, Guifang Dong, Yong Qiu* Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education,Department of Chemistry, Tsinghua University, 100084, Beijing, China

【机构】 清华大学化学系有机光电子与分子工程教育部重点实验室；

【Abstract】 Pentacene single crystals were grown by physical vapor growth. It was found that large-sized pentacene single crystals can be grown at 1 atm Ar2 either in a closed tube or in an opened tube with Ar2 as the flowing gas. The morphology of surface and transect of pentacene crystals was characterized by optical microscope, atomic force microscope and scanning electron microscope. Pentacene monolayers are observed on the surface and in the interior of single crystals. The array of large straight steps are also observed on the surface of pentacene single crystals. All results indicate that the growth mode of pentacene single crystals is two-dimensional nucleation-straight steps-layer by layer growth.更多还原