Combined impact of entropy and carrier delocalization on charge transfer exciton dissociation at the donor-acceptor interface

Article

关键词: CONJUGATED POLYMER;    ELECTRON-ACCEPTOR;    SEPARATION;    DYNAMICS;    SOLIDS;    CELLS;   

DOI  :  10.1103/PhysRevB.94.075305

来源: SCIE

【 摘 要 】

Several models of the charge transfer exciton (CTE) have been proposed to explain its dissociation at the donor-acceptor (DA) interface. However, the underlying physics is still under debate. Here, we derive a temperature (T) dependent tight-binding model for an electron-hole pair at the DA interface. The main finding is the existence of the localization-delocalization transition at a critical T, which can explain the CTE dissociation. The present study highlights the combined effect of entropy (finite T) and carrier delocalization in the CTE dissociation.

【 授权许可】

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