Investigation of the influence of persulfurated benzene derivatives on optical and carrier mobility properties

Abstract

In this research, two persulfurated benzene molecules consisting of amine and carboxylic acid derivatives were designed, synthesized and the effect of substitution in para position on absorption, fluorescence, and aggregation induced emission (AIE) were investigated. Moreover, taking into account the simpler method, the space charge limited current (SCLC) was considered and the temperature dependence on carrier mobility (μ) of the derivatives was investigated. The maximum value of hole mobility (μh) at 298 K was calculated to be 7.50 × 10-4cm2Vs at an electric field of 900 V0.5cm0.5. Since the crystallite size of the compound consisting of the NH2 group was higher (100.07 nm), the (μ) at 298 K and 77 K were also higher than the other counterpart. As a result, the NH2 substitution played a more effective role in increasing the (μ).