Membrane-perovskite films, devices, and methods of preparation
AssigneeThe University of North Carolina at Chapel Hill
InventorsJinsong Huang, Jingjing Zhao
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Abstract
The present disclosure is directed to a composite film, comprising one or more layers, each layer comprising: i. a porous membrane comprising interconnected channels; and ii. a radiation sensitive material comprising a plurality of crystals, wherein the plurality of crystals are embedded in interconnected channels of said porous membrane. In certain embodiments, the radiation sensitive material is perovskite. Methods for producing the composite films and integrating the films onto read out circuitry for digital X-ray imaging are additionally described.
Claims68
A multilayer composite film, comprising two or more layers, each layer comprising:
- i. a porous membrane comprising interconnected channels;
- and
- ii. a radiation sensitive material comprising a plurality of crystals,
- wherein the plurality of crystals are embedded in interconnected channels of said porous membrane;
- wherein said porous membrane and said radiation sensitive material in each adjacent layer are the same or different to those of any other layer;
- and said multilayer composite film is continuous.
A composite film, comprising one layer, said layer comprising:
- i. a porous membrane comprising interconnected channels;
- and
- ii. a radiation sensitive material comprising a plurality of crystals,
- wherein the plurality of crystals are embedded in interconnected channels of said porous membrane;
- and
- wherein said composite film is continuous.
A method of preparing a multilayer continuous composite film comprising two or more layers, said method comprising:
- a) passing a radiation sensitive material precursor solution through a porous membrane, wherein one or more crystals of the radiation sensitive material are retained in one or more pores of said porous membrane;
- wherein a) is carried out two or more times to prepare said two or more layers;
- wherein said radiation sensitive material precursor solution and said porous membrane in adjacent layers are the same or different;
- and
- b) compressing said two or more layers to prepare said continuous composite film.
A method of preparing a continuous composite film comprising one layer, said method comprising:
- a) passing a radiation sensitive material precursor solution through a porous membrane, wherein one or more crystals of the radiation sensitive material are retained in one or more pores of said porous membrane;
- and
- b) compressing said layer to prepare said continuous composite film.
A method for preparing a continuous composite film comprising one or more layers, said method comprising:
- a) contacting a radiation sensitive material with a porous membrane;
- b) applying a temperature and pressure effective enough to melt said radiation sensitive material, producing a melted material;
- c) contacting said melted material with pores of said membrane;
- and
- d) cooling said membrane to prepare a membrane with solidified radiation sensitive material embedded in pores of said membrane.
- wherein a)-d) are carried out one or more times to prepare said one or more layers;
- wherein said radiation sensitive material and said porous membrane in adjacent layers are the same or different;
- and
- e) compressing said one or more layers to prepare said continuous composite film.
A method of preparing a continuous multilayer composite film comprising two or more layers, said method comprising:
- passing a radiation sensitive material precursor solution through two or more porous membranes, wherein one or more crystals of the radiation sensitive material are retained in one or more pores of said porous membranes;
- wherein said porous membranes in adjacent layers are each the same or different;
- and
- compressing said two or more layers to prepare said continuous composite film.
A method of preparing a continuous multilayer composite film comprising a four-layer composition, wherein Layer 1 is adjacent to Layer 2;
- Layer 2 is adjacent to Layer 3;
- and Layer 3 is adjacent to Layer 4, said method comprising:
- passing a MAPbBr3 solution through a first porous membrane, wherein one or more crystals of the MAPbBr3 solution are retained in one or more pores of said first porous membrane to prepare Layer 1,
- passing a MAPb(I0.9Cl0.1)3 solution through a second porous membrane, wherein one or more crystals of the MAPb(I0.9Cl0.1)3 solution are retained in one or more pores of said second porous membrane to prepare Layer 2;
- passing a MAPb(I0.9Cl0.1)3 solution through a third porous membrane, wherein one or more crystals of the MAPb(I0.9Cl0.1)3 solution are retained in one or more pores of said third porous membrane to prepare Layer 3;
- passing a MAPbBr3 solution through a fourth porous membrane, wherein one or more crystals of the MAPbBr3 solution are retained in one or more pores of said fourth porous membrane to prepare Layer 4,
- wherein each of said first, second, third, and fourth porous membranes is nylon;
- compressing said four-layer composition for about 90 s, at a temperature of about 308 K, and a pressure of about 0.5 MPa, followed by a pressure of about 2 MPa, at a temperature of about 473.15 K, for about 120 s to prepare said continuous composite film.
A method of preparing a continuous multilayer composite film comprising a four-layer composition, wherein Layer 1 is adjacent to Layer 2;
- Layer 2 is adjacent to Layer 3;
- and Layer 3 is adjacent to Layer 4, said method comprising:
- passing a MAPb(I0.9Cl0.1)3 solution through two porous membranes, wherein one or more crystals of the MAPb(I0.9Cl0.1)3 solution are retained in one or more pores of said porous membranes to prepare Layer 2 and Layer 3;
- passing a MAPbBr3 solution through two porous membranes, wherein one or more crystals of the MAPbBr3 solution are retained in one or more pores of said porous membranes to prepare Layer 1 and Layer 4,
- wherein each of said porous membranes is nylon;
- compressing said four-layer composition for about 90 s, at a temperature of about 308 K, and a pressure of about 0.5 MPa, followed by a pressure of about 2 MPa, at a temperature of about 473.15 K, for about 120 s, to prepare said continuous composite film.
Dependencies are inferred from the claim text.