A single graphene derivative layer as hole transport inorganic solar cells based on PBDB-T:ITIC
2020
A layer of fluorinated reduced graphene oxide (FrGO), as an
alternative hole transport (HTL) in organic solar cells (OSCs) based on a
PBDB-T:ITIC active layer, is reported. OSC configuration is
ITO/HTL/PBDB-T:ITIC/PFN/FM; FM is Field’s metal, a eutectic alloy
deposited at room atmosphere. PEDOT:PSS, FrGO/PEDOT:PSS, and FrGO are
tested as HTLs; the average efficiencies of 8.8, 8.2, and 5.3%,
respectively, are reached. Inhomogeneity of the FrGO layer is determined
as the main factor that affects the photovoltaic behavior and stability.
Device stability is very acceptable, sometimes with a superior behavior
than data previously reported; FM also could potentially contribute to
this enhanced stability.
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