Hot carrier extraction from 2D semiconductor photoelectrodes.

ABSTRACT: Hot carrier-based energy conversion systems could double the efficiency of conventional solar energy technology or drive photochemical reactions that would not be possible using fully thermalized, "cool" carriers, but current strategies require expensive multijunction architectures. Using an unprecedented combination of photoelectrochemical and in situ transient absorption spectroscopy measurements, we demonstrate ultrafast (<50 fs) hot exciton and free carrier extraction under applied bias in a proof-of-concept photoelectrochemical solar cell made from earth-abundant and potentially inexpensive monolayer (ML) MoS₂. Our approach facilitates ultrathin 7 Å charge transport distances over 1 cm² areas by intimately coupling ML-MoS₂ to an electron-selective soli

SUBMITTER: Austin R 

PROVIDER: S-EPMC10104502 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature