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US 2026/0107674 A1Published application
Organic photovoltaic materials, devices, and methods
AssigneeThe Florida State University Research Foundation, Inc.
InventorsVincent O. Eze, Okenwa Okoli
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Abstract
Organic photovoltaic materials (OPV) and devices using the same are provided, as well as methods of fabricating and using the same. An OPV material can be used as a photo-absorbing layer for mechanoluminescent (ML) light (e.g., in a flexible organic ML photodiode). The OPV material can include, for example, a blend of a donor polymer (e.g., P3HT) and a non-halogenated, non-fullerene acceptor (e.g., Y6).
Claims20
A pressure sensor, comprising:
- an organic photovoltaic (OPV) layer comprising a composite material;
- a first electrode disposed on the OPV layer;
- a charge transport layer disposed under the OPV layer;
- a second electrode disposed under the charge transport layer;
- and
- a mechanoluminescent (ML) layer comprising an ML material and configured to emit light to be absorbed by the OPV layer upon application of stress to the ML layer,
- wherein the layer comprising the ML material is disposed on at least one of the first electrode, the OPV layer, the charge transport layer, and the second electrode,
- wherein the composite material comprises:
- a donor polymer;
- and
- a non-fullerene acceptor, and
- wherein the donor polymer is poly(3-hexylthiophene-2,5-diyl (P3HT).
9 more elements
A method of fabricating a pressure sensor, the method comprising:
- providing a mixture comprising a liquid, a donor polymer, and a non-fullerene acceptor;
- disposing the mixture on a charge transport layer;
- removing at least a portion of the liquid from the mixture to form an organic photovoltaic (OPV) layer on the charge transport layer;
- disposing a first electrode on the OPV layer;
- disposing a second electrode on the charge transport layer;
- and
- providing a mechanoluminescent (ML) layer comprising an ML material and configured to emit light to be absorbed by the OPV layer upon application of stress to the ML layer,
- wherein the ML layer is disposed on at least one of the first electrode, the OPV layer, the charge transport layer, and the second electrode, and
- wherein the donor polymer is poly(3-hexylthiophene-2,5-diyl (P3HT).
6 more elements
Dependencies are inferred from the claim text.