发光学报Issue(8)：875-881,7.DOI:10.3788/fgxb20153608.0875
2,7-二辛基[1]苯并噻吩并[3,2-b]苯并噻吩（C8-BTBT）与MoS2界面的能级匹配与薄膜生长
Energy Level Bending and Molecular Packing Mode of 2,7-diocty[1] benzothieno[3,2-b] benzothiophene(C8-BTBT) on MoS2
摘要
Abstract
The energy level alignment, film growth and molecular orientation of C8-BTBT on MoS2 were studied by ultraviolet photoemission spectroscopy ( UPS ) , X-ray photoemission spectroscopy ( XPS) and atomic force microscopy ( AFM) . The molecules adopt standing-up orientation on MoS2 and the island growth mood were confirmed. The ionization potential ( IP) decrease and highest oc-cupied orbital ( HOMO) down-shift were observed as the film thickness increased. IP decrease is as-cribed to the gradual increase of the surface electric dipole pointing inwards when the molecular tilt angle (θ) about the substrate normal decreases with the increasing of film thickness. The energy level shift results in an analogy P-N junction effect, which provides important guidance for C8-BTBT based electronic device design.关键词
光电子能谱/C8-BTBT/能级匹配/分子取向/薄膜生长Key words
photoemission spectroscopy ( PES )/C8-BTBT/energy level alignment/molecular orientation/film分类
数理科学引用本文复制引用
吕路,牛冬梅,谢海鹏,曹宁通,高永立..2,7-二辛基[1]苯并噻吩并[3,2-b]苯并噻吩（C8-BTBT）与MoS2界面的能级匹配与薄膜生长[J].发光学报,2015,(8):875-881,7.基金项目
国家自然科学基金(51173205,61306085,11334014)资助项目 （51173205,61306085,11334014）
