PHOTOVOLTAIC CELL WITH GRAPHENE-FERROELECTRIC ELECTRODE

摘要

A photovoltaic cell (10) is disclosed that includes an active layer (20) sandwiched by top and bottom graphene-ferroelectric electrodes (30T, 30B) each having a graphene layer (32) and a polarized ferroelectric layer (34). The polarized ferroelectric layer defines an internal electric field (EI). Light (50) irradiates the active layer through the top graphene-ferroelectric electrode, causing the generation in the active layer of electrons (e) and holes (h) as charge carriers. The internal electric field causes the electrons and holes to move towards opposite electrodes, giving rise to a photocurrent (ipc), while also mitigating undesirable charge-carrier recombination.

主权项

1. A photovoltaic cell device for generating a photocurrent when irradiated with light, comprising:
an active layer having top and bottom surfaces and that generates charge carriers when irradiated with the light; top and bottom electrodes respectively interfaced with the top and bottom layers of the active layer; and wherein the top electrode comprises a first graphene layer and a first polarized ferroelectric layer, wherein the first polarized ferroelectric layer defines an internal electric field that extends into the active layer and that facilitates the generation of the photocurrent.