Positioning growth of NPB crystalline nanowires on the PTCDA nanocrystal template.
Positioning growth of NPB crystalline nanowires on the PTCDA nanocrystal template.
复制标题
DOI：
10.1039/c8nr02085j
复制
发表时间：
2018-05
期刊：
影响因子：
6.7
通讯作者：
Hong Wang;Haiping Lin;Xing Fan;S. Ostendorp;Yandong Wang;Lizhen Huang;Lin Jiang;Youyong Li;G. Wilde;H. Fuchs;Wenchong Wang;L. Chi
中科院分区：
文献类型：
--
作者：
Hong Wang;Haiping Lin;Xing Fan;S. Ostendorp;Yandong Wang;Lizhen Huang;Lin Jiang;Youyong Li;G. Wilde;H. Fuchs;Wenchong Wang;L. Chi
非平面有机分子通常通过气相沉积在表面上形成非晶膜。在这项研究中，我们证明了第一次，直接晶体生长的非平面NPB是可能的，当初始沉积的分子在PTCDA的模板上的取向进行控制，使其类似于分子晶体的结构。结晶NPB纳米线可以通过控制PTCDA模板在预定位置的位点选择性生长来进一步定位。随后制备了短沟道底部接触OFET阵列，其具有直接生长在电极上的NPB纳米线。NPB纳米线的空穴迁移率比非晶薄膜的空穴迁移率提高了40倍。
Non-planar organic molecules often form amorphous films via vapor phase deposition on surfaces. In this study, we demonstrate for the first time that direct crystalline growth of non-planar NPB is possible when the orientation of initially deposited molecules on a PTCDA nanocrystal template is controlled to make it analogous to the structure of the molecular crystal. The crystalline NPB nanowires can be further positioned by controlling the site-selective growth of PTCDA nanocrystal templates at pre-determined locations. Short channel bottom contact OFET array with the NPB nanowires directly grown on electrodes were subsequently fabricated. The hole mobility of NPB nanowires is improved by 40-fold in comparison to that of the amorphous films.