Design of versatile printed organic resistor based on resistivity (ρ) control

We demonstrate the design and fabrication of a printed organic resistor based on resistivity (rho) control method. Two types of resistor are reported by utilizing three types of material poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), poly(methyl methacrylate), and silver (Ag) nano-particles. Materials are blended for the required value of resistivity (rho), to overcome the size and resistance value constraints of the printed resistors. The design function rho(x) is also proposed to estimate the required resistivity value, and this function is obtained from the measured resistivity and mixing ratio of materials. The proposed resistivity design function is verified by comparing measured and theoretical estimated values of the resistivity. The resistors are fabricated on polyethylene terephthalate substrate through electro-hydrodynamic technique. The proposed two types of organic resistors are electrically and mechanically characterized by using various methods of their current-voltage (I-V) relation analysis, endurance time, bendability, heating temperature analysis, and frequency response.