[15a-A41-1~12] 12.5 Organic solar cells

△ [15a-A41-2] Development of naphthothiophene diimide (NTI) and application to n-type organic semiconducting materials

〇Masahiro Nakano¹, Ji-Hoon Kim¹, Wangqiao Chen^1,2, Itaru Osaka¹, Kazuo Takimiya¹ (1.RIKEN CEMS, 2.Nanyang Technological University)

Keywords:N-type Organic Semiconducting Material, Organic photovoltaic cell, naphthalene diimide

Novel pi-extended naphthalene dimide with one fused thiphene ring, namely, naphtho[2,3-b]thiophenediimide (NTI) was synthesized, and characterized its molecular and packing structure as well as electronic structure. Taking advantage of the mono-functionalizeability of the NTI unit at the thiophene arpha-position, a simple dimer of NTI or a trimer with a benzene core, as potential n-type organic semiconductors, were easily derived. In fact, these extended NTI derivatives were functioned as n-type semiconductors in thin-film transistors or photovoltaic cells.