| 초록 |
Organic Field Effect Transistor-based chemical sensors have advantages such as solution processability, switching ability, mechanical flexibility and room-temperature operation. However, OFET-based gas sensors have low signals due to the inherently low charge mobility of the conjugated polymer and poor diffusion and interaction of the gas analyte to the conduction channel. Fabrication of nanoporous structures and blending of heterogeneous materials are effective methods to overcome these drawbacks. Herein, we prepare a CP/reduced graphene oxide composite solution and easily implement ultra-thin nanoporous composite films using a solution shear-coating method. Furthermore, we effectively demonstrated that the interaction between rGO and CP improves the molecular ordering and the charge mobility of CP. In our study, the pores providing diffusion pathway for the gas analytes, strong interactions of rGO with gas analytes, and enhanced charge mobility provide excellent sensing performance. |
