Perovskite composite structure

Abstract

A perovskite composite structure is provided. The perovskite composite structure includes a light absorption layer and a sterically-hindered layer disposed in the periphery of the light absorption layer. The light absorption layer includes a perovskite material. The sterically-hindered layer includes a two-dimensional material.

Claims

1. A perovskite composite structure, comprising: a light absorption layer comprising a perovskite material, wherein the perovskite material has a structure of formula (1) below:
ABX.sub.3(1), wherein A is ammonia, methylamine, methanimidamide, aminomethanamidine, formamidine, ethylenediamine, dimethylamine, imidazole, acetamidine, propylamine, isopropylamine, trimethylenediamine, ethylamine, butylamine, isobutylamine, tert-butylamine, diethylamine, 5-aminovaleric acid, 2-thienylmethylamine, hexylamine, aniline, benzylamine, phenyl ethyl amine, octylamine, decylamine, dodecylamine, tetradecylamine, hexadecylamine, oleylamine, octadecylamine, eicosylamine, Li, Na, K, Rb, Cs, or Cu; B is Cd, Co, Cr, Cu, Fe, Ge, Pb, or Sn; and X is Cl, Br, I, cyanide (CN), cyanate (NCO), thiocyanate (NCS), selenocyanate (SeCN), or tellurocyanate (TeCN); and a sterically-hindered layer located in a periphery of the light absorption layer, wherein the sterically-hindered layer comprises a two-dimensional material which is different from the perovskite material, and the two-dimensional material comprises bismuth sulfide (Bi.sub.2S.sub.3) black phosphorus, hexagonal boron nitride (h-BN), graphene, graphene oxide (GO), reduced graphene oxide (rGO), indium selenide (In.sub.2Se.sub.3), lead tin disulfide (PbSnS.sub.2), phosphorene, arsenic sulfide (As.sub.2S.sub.3), antimony arsenic sulfide (SbAsS.sub.3); monochalcogenide (MX), wherein MX is bismuth thallium telluride (BiTlTe), copper sulfide (CuS), gallium selenide (GaSe), gallium selenide telluride (GaSeTe), gallium sulfide (GaS), gallium sulfide selenide (GaSSe), gallium telluride (GaTe), germanium selenide (GeSe), germanium sulphide (GeS), indium selenide (InSe), indium telluride (InTe), thallium selenide (TlSe), tin selenide (SnSe), thallium gallium disulfide (TlGaS.sub.2), thallium gallium diselenide (TlGaSe.sub.2), thallium indium disulfide (TlInS.sub.2); dichalcogenide (MX.sub.2), wherein MX.sub.2 is hafnium diselenide (HfSe.sub.2), hafnium disulfide (HfS.sub.2), molybdenum diselenide (MoSe.sub.2), molybdenum disulfide (MoS.sub.2), molybdenum sulfide selenide (MoSSe), molybdenum tungsten diselenide (MoWSe.sub.2), molybdenum tungsten disulfide (MoWS.sub.2), tungsten disulfide (WS.sub.2), tungsten diselenide (WSe.sub.2), rhenium diselenide (ReSe.sub.2), tantalum disulfide (TaS.sub.2), tin diselenide (SnSe.sub.2), tin disulfide (SnS.sub.2), rhenium molybdenum disulfide (ReMoS.sub.2), rhenium niobium diselenide (ReNbSe.sub.2), rhenium niobium disulfide (ReNbS.sub.2), tungsten ditelluride (WTe.sub.2), tungsten sulfide selenide (WSSe), zirconium diselenide (ZrSe.sub.2), zirconium disulfide (ZrS.sub.2), zirconium ditelluride (ZrTe.sub.2); trichalcogenide (MX.sub.3), wherein MX.sub.3 is titanium trisulfide (TiS.sub.3); iodide (MI.sub.2), wherein MI.sub.2 is cadmium diiodide (CdI.sub.2) lead diiodide (PbI.sub.2) or a combination thereof.

2. The perovskite composite structure of claim 1, wherein the light absorption layer further comprises the two-dimensional material.

3. The perovskite composite structure of claim 2, wherein the sterically-hindered layer further comprises an organic amine.

4. The perovskite composite structure of claim 3, wherein the organic amine comprises ammonia, methyl amine, methanimidamide, aminomethanamidine, formamidine, ethylenediamine, dimethylamine, imidazole, acetamidine, propylamine, isopropylamine, trimethylenediamine, ethylamine, butylamine, isobutylamine, tert-butylamine, diethylamine, 5-aminovaleric acid, thiophenemethylamine, hexylamine, aniline, benzylamine, phenylethylamine, octylamine, decylamine, dodecylamine, tetradecylamine, hexadecylamine, oleylamine, octadecylamine, eicosylamine, or a combination thereof.

5. The perovskite composite structure of claim 1, wherein a length of the two-dimensional material in the sterically-hindered layer is 0.2 m to 20 m.

6. The perovskite composite structure of claim 2, wherein a length of the two-dimensional material in the light absorption layer is 0.2 m to 20 m.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

(2) FIG. 1 is a cross-sectional schematic diagram of a perovskite composite structure according to an embodiment of the invention.

DESCRIPTION OF THE EMBODIMENTS

(3) FIG. 1 is a cross-sectional schematic diagram of a perovskite composite structure according to an embodiment of the invention.

(4) Referring to FIG. 1, a perovskite composite structure 100 of the present embodiment includes a light absorption layer 110 and a sterically-hindered layer 120. The light absorption layer 110 includes a perovskite material. In the invention, perovskite material refers to a material having a perovskite structure and not calcium titanate (CaTiO.sub.3) in particular. In other words, perovskite material contains any material having a crystal structure of a similar type to perovskite oxide. The perovskite material has the structure shown in formula (1) below:
ABX.sub.3(1),
wherein A and B are cations and X is an anion. The A cation is monovalent and the B cation is divalent.

(5) For instance, in the present embodiment, A is, for instance, ammonia, methylamine, methanimidamide, aminomethanamidine, formamidine, ethylenediamine, dimethylamine, imidazole, acetamidine, propylamine, isopropylamine, trimethylenediamine, ethylamine, butylamine, isobutylamine, tert-butylamine, diethylamine, 5-aminovaleric acid, thiophenemethylamine, hexylamine, aniline, benzylamine, phenylethylamine, octylamine, decylamine, dodecylamine, tetradecylamine, hexadecylamine, oleylamine, octadecylamine, eicosylamine, Li, Na, K, Rb, Cs, or Cu; and B is Cd, Co, Cr, Cu, Fe, Ge, Pb, or Sn; and X is Cl, Br, I, cyanide (CN), cyanate (NCO), thiocyanate (NCS), selenocyanate (SeCN), or tellurocyanate (TeCN), but the invention is not limited thereto. In other words, the perovskite material of the present embodiment is an organic-inorganic hybrid perovskite material formed by an inorganic material and an organic material.

(6) Since the organic-inorganic hybrid perovskite material of the invention is a material formed by mixing, the organic-inorganic hybrid perovskite material of the invention has the characteristics of both an organic compound and an inorganic crystal. The inorganic component is formed by a framework covalently bonded and ionic interaction, and can provide high carrier mobility. The organic component facilitates the self-assembly mechanism of the materials. Moreover, the electrical properties of the organic and inorganic materials can be adjusted by lowering the dimensionality of the organic component and the electronic coupling between inorganic sheet materials.

(7) In the present embodiment, the light absorption layer 110 can further include a two-dimensional material. The two-dimensional material is, for instance, bismuth sulfide (Bi.sub.2S.sub.3) black phosphorus, hexagonal boron nitride (h-BN), graphene, graphene oxide (GO), reduced graphene oxide (rGO), indium selenide (In.sub.2Se.sub.3), lead tin disulfide (PbSnS.sub.2), phosphorene, arsenic sulfide (As.sub.2S.sub.3), antimony arsenic sulfide (SbAsS.sub.3); monochalcogenide (MX) such as bismuth thallium telluride (BiTlTe), copper sulfide (CuS), gallium selenide (GaSe), gallium selenide telluride (GaSeTe), gallium sulfide (GaS), gallium sulfide selenide (GaSSe), gallium telluride (GaTe), germanium selenide (GeSe), germanium sulphide (GeS), indium selenide (InSe), indium telluride (InTe), thallium selenide (TlSe), tin selenide (SnSe), thallium gallium disulfide (TlGaS.sub.2), thallium gallium diselenide (TlGaSe.sub.2), thallium indium disulfide (TlInS.sub.2); dichalcogenide (MX.sub.2) such as hafnium diselenide (HfSe.sub.2), hafnium disulfide (HfS.sub.2), molybdenum diselenide (MoSe.sub.2), molybdenum disulfide (MoS.sub.2), molybdenum sulfide selenide (MoSSe), molybdenum tungsten diselenide (MoWSe.sub.2), molybdenum tungsten disulfide (MoWS.sub.2), tungsten disulfide (WS.sub.2), tungsten diselenide (WSe.sub.2), rhenium diselenide (ReSe.sub.2), tantalum disulfide (TaS.sub.2), tin diselenide (SnSe.sub.2), tin disulfide (SnS.sub.2), rhenium molybdenum disulfide (ReMoS.sub.2), rhenium niobium diselenide (ReNbSe.sub.2), rhenium niobium disulfide (ReNbS.sub.2), tungsten ditelluride (WTe.sub.2), tungsten sulfide selenide (WSSe), zirconium diselenide (ZrSe.sub.2), zirconium disulfide (ZrS.sub.2), zirconium ditelluride (ZrTe.sub.2); trichalcogenide (MX.sub.3) such as titanium trisulfide (TiS.sub.3); iodide (MI.sub.2) such as cadmium diiodide (CdI.sub.2), lead diiodide (PbI.sub.2), or a combination thereof (including one or more), but the invention is not limited thereto. The length of the two-dimensional material is, for instance, 0.2 m to 20 m. In the present embodiment, since the light absorption layer 110 includes a two-dimensional material having high electron mobility, the electron transport capability and light conversion efficiency of perovskite can be increased.

(8) The sterically-hindered layer 120 is located in the periphery of the light absorption layer 110. The sterically-hindered layer 120 can include a two-dimensional material. The two-dimensional material is, for instance, bismuth sulfide (Bi.sub.2S.sub.3) black phosphorus, hexagonal boron nitride (h-BN), graphene, graphene oxide (GO), reduced graphene oxide (rGO), indium selenide (In.sub.2Se.sub.3), lead tin disulfide (PbSnS.sub.2), phosphorene, arsenic sulfide (As.sub.2S.sub.3), antimony arsenic sulfide (SbAsS.sub.3); monochalcogenide (MX) such as bismuth thallium telluride (BiTlTe), copper sulfide (CuS), gallium selenide (GaSe), gallium selenide telluride (GaSeTe), gallium sulfide (GaS), gallium sulfide selenide (GaSSe), gallium telluride (GaTe), germanium selenide (GeSe), germanium sulphide (GeS), indium selenide (InSe), indium telluride (InTe), thallium selenide (TlSe), tin selenide (SnSe), thallium gallium disulfide (TlGaS.sub.2), thallium gallium diselenide (TlGaSe.sub.2), thallium indium disulfide (TlInS.sub.2); dichalcogenide (MX.sub.2) such as hafnium diselenide (HfSe.sub.2), hafnium disulfide (HfS.sub.2), molybdenum diselenide (MoSe.sub.2), molybdenum disulfide (MoS.sub.2), molybdenum sulfide selenide (MoSSe), molybdenum tungsten diselenide (MoWSe.sub.2), molybdenum tungsten disulfide (MoWS.sub.2), tungsten disulfide (WS.sub.2), tungsten diselenide (WSe.sub.2), rhenium diselenide (ReSe.sub.2), tantalum disulfide (TaS.sub.2), tin diselenide (SnSe.sub.2), tin disulfide (SnS.sub.2), rhenium molybdenum disulfide (ReMoS.sub.2), rhenium niobium diselenide (ReNbSe.sub.2), rhenium niobium disulfide (ReNbS.sub.2), tungsten ditelluride (WTe.sub.2), tungsten sulfide selenide (WSSe), zirconium diselenide (ZrSe.sub.2), zirconium disulfide (ZrS.sub.2), zirconium ditelluride (ZrTe.sub.2); trichalcogenide (MX.sub.3) such as titanium trisulfide (TiS.sub.3); iodide (MI.sub.2) such as cadmium diiodide (CdI.sub.2), lead diiodide (PbI.sub.2), or a combination thereof (including one or more), but the invention is not limited thereto. The length of the two-dimensional material is, for instance, 0.2 m to 20 m. In the present embodiment, since the sterically-hindered layer 120 includes the two-dimensional material and is located in the periphery of the light absorption layer 110, stereoscopic blocking function is achieved to block moisture. In other words, the sterically-hindered layer 120 can prevent contact of moisture and air with the light absorption layer 110 (in particular the perovskite material in the light absorption layer 110), and therefore the perovskite composite structure of the invention is relatively stable in atmospheric environment.

(9) Moreover, in the present embodiment, since the two-dimensional material in the sterically-hindered layer 120 has high electron mobility, the sterically-hindered layer 120 can increase the electron transport capability and light conversion efficiency of perovskite.

(10) In the present embodiment, the sterically-hindered layer 120 can further include organic amine. The organic amine is, for instance, ammonia, methylamine, methanimidamide, aminomethanamidine, formamidine, ethylenediamine, dimethylamine, imidazole, acetamidine, propylamine, isopropylamine, trimethylenediamine, ethylamine, butylamine, isobutylamine, tert-butylamine, diethylamine, 5-aminovaleric acid, thiophenemethylamine, hexylamine, aniline, benzylamine, phenylethylamine, octylamine, decylamine, dodecylamine, tetradecylamine, hexadecylamine, oleylamine, octadecylamine, eicosylamine, or a combination thereof (including one or more). In the present embodiment, the organic amine in the sterically-hindered layer 120 has a function similar to passivation and can prevent contact of moisture and air with the light absorption layer 110 (in particular the perovskite material in the light absorption layer 110), and therefore the perovskite composite structure of the invention is relatively stable in atmospheric environment.

(11) Based on the above, in the perovskite composite structure of the invention, the sterically-hindered layer located in the periphery of the light absorption layer having a perovskite material can block moisture and air, and is therefore stable in atmospheric environment. Moreover, since the light absorption layer and/or the sterically-hindered layer of the perovskite composite structure of the invention includes a two-dimensional material, the electron transport capability of the perovskite can be increased. Since the perovskite composite structure of the invention has advantages such as stability in atmospheric environment, high electron transport capability, and high light conversion efficiency, the perovskite composite structure of the invention is suitable for, for instance, a highly-sensitive light sensor and solar cell.

(12) Although the invention has been described with reference to the above embodiments, it will be apparent to one of ordinary skill in the art that modifications to the described embodiments may be made without departing from the spirit of the invention. Accordingly, the scope of the invention is defined by the attached claims not by the above detailed descriptions.