In the present study, temperature dependent conductivity and field dependent nonlinear transport are adopted to provide insight into the charge transport in poly(3-methylthiophene) polymer thin film devices that are electropolymerized at different temperatures. The samples obtained at different temperature show relative disorder quantified by the conductivity ratio, σ_r = σ (84 K)/σ (300 K) which is further correlated with the morphology of the samples. Charge transport in each sample is governed by variable range hopping mechanism and the parameters like density of states at the Fermi level [N(E_F)], average hopping distance (R) and average hopping energy (W) have been estimated. Electric field activated nonlinear transport is described by multistep tunneling model of Glazman-Matveev (GM model) over four separate channels of conduction. It is concluded that the field dependent conductivity has a ‘field-scale’ in all the samples where the conductivity converges to a single master curve in the temperature range of observation. The results obtained from the conductivity ratio and temperature dependent conductivity are strongly supported by electric field dependent conductivity and nonlinear exponents.

在本研究中，采用温度相关的电导率和场相关的非线性传输来深入了解在不同温度下电聚合的聚（3-甲基噻吩）聚合物薄膜器件中的电荷传输。在不同温度下得到的试样示出了由导电性比，定量相对紊乱σ _{- [R}  =  σ（84 K）/ σ（300 K），其与样品的形貌的进一步相关。每个样品中的电荷传输受可变范围跳变机制和费米能级[N（E _F）]，估计了平均跳跃距离（R）和平均跳跃能量（W）。电场激活的非线性传输通过Glazman-Matveev的多步隧穿模型（GM模型）在四个单独的传导通道上进行描述。可以得出结论，在所有样品中，取决于电导率的电导率在观察温度范围内收敛于一条主曲线，所有样品均具有“场标”。从电导率和温度相关的电导率获得的结果得到电场相关的电导率和非线性指数的有力支持。