Abstract:In organic photovoltaic
(OPV) cells, besides the organic active layer, the electron-transporting
layer (ETL) has a primordial role in transporting electrons and blocking
holes. In planar heterojunction-OPVs (PHJ-OPVs), the ETL is called
the exciton blocking layer (EBL). The optimum thickness of the EBL
is 9 nm. However, in the case of inverted OPVs, such thickness is
too high to permit efficient electron collection, due to the fact
that there is no possibility of metal diffusion in the EBL during
the top metal… Show more
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