| 초록 |
Doping technology optimizes the electrical characteristics of semiconductors to enable charge injection from electrodes and control the conductivity of semiconductor. Electrical doping of organic semiconductors consists of two steps: charge transfer complex (CTC) formation and charge separation. In this study, to quantitatively analyze the reaction efficiency of each step, dopant and host molecules were sequentially deposited and the CT reaction between the interfaces was analyzed by electrical and optical methods. The CTC density and conductivity at the interfaces between N, N'-Di (1-naphthyl) -N, N'-diphenyl- (1,1'-biphenyl) -4,4'- diamine (NPB) and MoO3 was determined by UV-vis spectrophotometer measurement and transmission line measurement (TLM), respectively. Activation energy of conductivity was used to compare the doping efficiency of various doping systems. |
