“…This issue has been addressed in the present work, within the framework of generic approach developed earlier. 12 In this letter, the focus is on the importance of weak interdot tunnel coupling and strong asymmetry in dot-lead couplings, in the presence of intradot Coulomb interaction (U) only, towards the enhancement of ZT, in series configuration. The interdot Coulomb interaction is supposed to be much less than U in realistic systems, therefore, in this paper, we have taken it to be zero.…”