| 초록 |
Multicomponent core/shell nanowires (NWs) based on organic semiconductors are of great importance in optoelectronic applications and in understanding charge transport phenomena as they provide different photoresponse due to the effective electrical interplay between core and shell materials. The organic phototransistors (OPTs) based on the core/shell NWs provide various advantages such as higher photoconductive gain with fast photo-response and efficient exciton dissociation at the interface. To date, however, most of the reports on multicomponent system have utilized bulk thin-film based OPTs. Herein, we report core/shell NW-OPTs using a high-performance n-channel organic semiconductor, BPE-PTCDI, and reduced graphene oxide. The reverse trend on charge transport behaviors and the faster charge compensation rate under light on-and-off switching compared to pure BPE-PTCDI NW-OPTs were observed by the synergistic effect of core/shell geometry. |
