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US 11,239,429 B1Granted
Superluminescent halide perovskite light-emitting diodes with a sub-bandgap turn-on voltage
AssigneeThe Florida State University Research Foundation, Inc.
InventorsZhibin Yu, Junqiang Li, Xin Shan
Life of this patent
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Abstract
An emissive perovskite ternary composite thin film comprising a perovskite material, an ionic-conducting polymer and an ionic-insulating polymer is provided. Additionally, a single-layer LEDs is described using a composite thin film of organometal halide perovskite (Pero), an ionic-conducting polymer (ICP) and an ionic-insulating polymer (IIP). The LEDs with Pero-ICP-IIP composite thin films exhibit a low turn-on voltage of about 1.9V (defined at 1 cd m−2 luminance) and a luminance of about 600,000 cd m−2.
Claims8
An emissive perovskite ternary composite thin film comprising:
- a perovskite material;
- an ionic-conducting polymer;
- and
- an ionic-insulating polymer;
- wherein the ionic-conducting polymer and the ionic-insulating polymer are dispersed in the perovskite material, and
- wherein a weight ratio of the ionic-conducting polymer to the ionic-insulating polymer in the emissive perovskite ternary composite thin film is 50:15 to 50:30.
3 more elements
Dependencies are inferred from the claim text.