Solid-state organic intermediate-band photovoltaic devices
AssigneeThe Trusteees of Princeton University
InventorsBarry P. RAND, YunHui L. LIN
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Abstract
In one aspect, solid-state organic intermediate-band photovoltaic devices are provided. A solid-state organic intermediate-band photovoltaic device, in some embodiments, comprises an organic electron donor and an organic electron acceptor, wherein the organic electron donor comprises a singlet energy level separated from a triplet energy level by an energy gap. The device also comprises a triplet sensitizer comprising singlet and triplet energy levels falling within the singlet-triplet energy gap of the electron donor.
Claims37
A solid-state organic intermediate-band photovoltaic device comprising:
- an organic electron donor comprising a singlet energy level separated from a triplet energy level by an energy gap;
- an organic electron acceptor;
- and
- a triplet sensitizer comprising singlet and triplet energy levels falling within the singlet-triplet energy gap of the electron donor.
A solid-state organic intermediate-band photovoltaic device comprising:
- an organic electron donor;
- an organic electron acceptor comprising a singlet energy level separated from a triplet energy level by an energy gap;
- and
- a triplet sensitizer comprising singlet and triplet energy levels falling within the singlet-triplet energy gap of the electron acceptor.
A method of enhancing efficiency of an intermediate-band photovoltaic device comprising:
- positioning a spacer layer between a triplet sensitizer and an electron acceptor, the spacer layer comprising electron donor having a singlet-triplet energy gap, wherein the triplet sensitizer comprises singlet and triplet energy levels falling within the singlet-triplet energy gap permitting triplet-triplet annihilation upconversion (TTA-UC) in the spacer layer.
Dependencies are inferred from the claim text.