Abstract
Energy problems have stimulated huge motivation to find new sources of energy with renewable and sustainable properties. Thermoelectric power generation from waste heat has been introduced as a reliable energy solution. DNA-based thermoelectric is essential for its relevant applications. In this paper, thermoelectricity, as well as thermal conductivity and electrical resistivity of poly(AT) and poly(CG) sequences, has been calculated. It was demonstrated that DNA has an exceptionally low thermal conductivity as well as moderate electric conductivity. Moreover, negative differential resistance (NDR) phenomenon has been detected. Interestingly, reversed charge current has been identified in poly(CG), which is attributed to band bending at the semiconductor surface. Also, the figure of merit for poly(AT) (poly(CG)) sequences reaches up to 1.5 (0.3) at room temperature, which makes it favorable for wearable organic thermoelectric applications. For poly(AT), the occurrence of negative differential thermoelectric resistance (NDTER) has been shown.
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