Organic metal halide hybrids, electrically driven light emitting diodes, and methods
AssigneeThe Florida State University Research Foundation, Inc.
InventorsHe Liu, Biwu Ma
Life of this patent
Estimating the term…
Abstract
Organic metal halide hybrids (OMHHs) that can be used as improved materials (e.g., emitter materials) for electrically driven LEDs are provided, as well as methods of fabricating the same. The OMHHs can be highly luminescent and conductive zero-dimensional (0D) OMHHs. Efficient LEDs can include one or more of the OMHHs described herein. For example, the OMHH can be (and the LEDs can be based on) solution processed TPPcarzSbBr4 thin films and/or TPPcarzSbBr4 single crystals.
Claims20
An organic metal halide hybrid (OMHH) having the following formula:
- (Cat)aM+bXy,
- where Cat is a phosphonium cation comprising a phosphorus atom substituted with three aryl C1-C20 hydrocarbyl substituents and one heteroaryl C1-C20 hydrocarbyl substituent,
- where M is a metal,
- where b is the oxidation state of the metal, and
- where X is a halogen.
An organic metal halide hybrid (OMHH) having the following formula:
- (Cat)aM+bXy,
- where Cat is a phosphonium cation comprising a phosphorus atom substituted with three aryl C1-C20 hydrocarbyl substituents and one heteroaryl C1-C20 hydrocarbyl substituent,
- where M is a metal,
- where b is the oxidation state of the metal,
- where X is a halogen,
- wherein a+b=y,
- wherein the heteroaryl C1-C20 hydrocarbyl substituent comprises a phenyl-carbazole moiety,
- wherein the three aryl C1-C20 hydrocarbyl substituents are phenyl,
- wherein M is antimony (Sb),
- wherein X is bromine (Br),
- wherein the OMHH has a zero-dimensional (0D) crystal structure,
- wherein:
- the OMHH is in the form of discrete crystals and the discrete crystals have a photoluminescent quantum efficiency (PLQE) of at least 90%;
- or the OMHH is in the form of a thin film and the thin film has a PLQE of at least 85%, and
- wherein the phosphonium cation is triphenyl(9-phenyl-9H-carbazol-3-yl) phosphonium with the following structure:
Dependencies are inferred from the claim text.