Abstract: Provided is a radiation detector, comprising a substrate, a pixel array formed on the substrate, a perovskite thick film formed on the pixel array and having nanosheet structure, and a readout circuit electrically connected to the pixel array, wherein the perovskite thick film comprises CsPbBrmI3-m or FAPbBrmI3-m, 0?m?3, a surfactant and a ligand. A preparation method for a perovskite thick film is also provided.

Abstract: The present disclosure provides a radiation detector, including a substrate, a pixel array formed on the substrate, a perovskite thick film formed on the pixel array and having a cubic crystal phase, a first electrode formed on the perovskite thick film and is opposite to the pixel array, and a readout circuit. The radiation detector has significantly reduced dark current density and high sensing sensitivity. The present disclosure also provides a method for preparing the perovskite thick film.

Abstract: The present disclosure provides a radiation detector, including a substrate, a pixel array formed on the substrate, a perovskite thick film formed on the pixel array and having a cubic crystal phase, a first electrode formed on the perovskite thick film and is opposite to the pixel array, and a readout circuit. The radiation detector has significantly reduced dark current density and high sensing sensitivity. The present disclosure also provides a method for preparing the perovskite thick film.

Abstract: Provided is a method for preparing lead iodide, which controls the crystal form of lead iodide through temperature, including: dissolving a lead compound in a first acid solution and adding an iodine compound to form a reaction solution including the first lead iodide; and heating the reaction solution to a temperature of 60° C. or more and standing at a constant temperature, to obtain the second lead iodide, wherein a peak intensity of the (003) crystal plane of the second lead iodide is greater than or equal to a peak intensity of the (110) crystal plane. Provided is also a method for preparing the perovskite film.

Abstract: Provided are a perovskite film and a manufacturing method thereof. The method includes the following steps. A perovskite precursor material is coated in a linear direction on a substrate with a temperature between 100° C. and 200° C., wherein a concentration of the perovskite precursor material is between 0.05 M and 1.5 M. An infrared light irradiation is performed on the perovskite precursor material to cure the perovskite precursor material to form a thin film including a compound represented by formula (1). The perovskite film has a single 2D phase structure or has a structure in which a 3D phase structure is mixed with a single 2D phase structure. (RNH3)2MA(n?1)M1nX(3n+1)??formula (1), wherein the definitions of R, MA, M1, X, and n are as defined above.

Abstract: Provided are a perovskite film and a manufacturing method thereof. The method includes the following steps. A perovskite precursor material is coated in a linear direction on a substrate with a temperature between 100° C. and 200° C., wherein a concentration of the perovskite precursor material is between 0.05 M and 1.5 M. An infrared light irradiation is performed on the perovskite precursor material to cure the perovskite precursor material to form a thin film including a compound represented by formula (1). The perovskite film has a single 2D phase structure or has a structure in which a 3D phase structure is mixed with a single 2D phase structure. (RNH3)2MA(n?1)M1nX(3n+1)??formula (1), wherein the definitions of R, MA, M1, X, and n are as defined above.

Abstract: Organic dyes and photoelectric conversion devices are provided. The Organic dye has the structure represented by formula (I), wherein, n is an integral of 2-11; the plurality of X is independent and elected from the group consisting of and combinations thereof; R, R1, and R2 comprise hydrogen, halogen, C1-18 alkyl group, C1-18 alkoxy group, C3-18 heteroalkyl group, C3-20 aryl group, C3-20 heteroaryl group, C3-20 cycloaliphatic group or C3-20 cycloalkyl group, or R1 is connected to R2 to form a ring having 5-14 members; R3 comprise hydrogen, halogen, nitro group, amino group, C1-18 alkyl group, C1-18 alkoxy group, C1-18 sulfanyl group, C3-18 heteroalkyl group, C3-20 aryl group, C3-20 heteroaryl group, C3-20 cycloaliphatic group or C3-20 cycloalkyl group; and Z is hydrogen, alkali metal, or quaternary ammonium salt.

Abstract: Disclosed is a dye, having a chemical formula: wherein each R1 is independently selected from hydrogen, —(CxH2x+1), —(CyH2y)—S—(CxH2x+1), or —(CyH2y)—N(CxH2x+1)2; Ar1 is wherein each R2 is independently selected from —(CxH2x+1), —(CxH2x)—S—(CxH2x+1), or (CxH2x)—N(CxH2x+1)2; Ar2 is wherein each R3 is independently selected from hydrogen, —(CxH2x+1), —(CyH2y)—S—(CxH2x+1), or —(CyH2y)—N(CxH2x+1)2; X is sulfur, oxygen, selenium, or N—R4, and R4 is —(CxH2x+1); m is in integer of 1 to 4; x is an integer of 1 to 20; and y is an integer of 0 to 20. The dye can be applied to a photoelectric conversion device.

Abstract: Disclosed is a dye, having a chemical formula: wherein each R1 is independently selected from hydrogen, —(CxH2x+1), —(CyH2y)—S—(CxH2x+1), or —(CyH2y)—N(CxH2x+1)2; Ar1 is wherein each R2 is independently selected from —(CxH2x+1), —(CxH2x)—S—(CxH2x+1), or (CxH2x)—N(CxH2x+1)2; Ar2 is wherein each R3 is independently selected from hydrogen, —(CxH2x+1), —(CyH2y)—S—(CxH2x+1), or —(CyH2y)—N(CxH2x+1)2; X is sulfur, oxygen, selenium, or N—R4, and R4 is —(CxH2x+1); m is in integer of 1 to 4; x is an integer of 1 to 20; and y is an integer of 0 to 20. The dye can be applied to a photoelectric conversion device.

Abstract: The disclosure provides an electrolyte composition and dye-sensitized solar cell using the same. The electrolyte composition includes a diionic liquid of Formula: Z?(X-Y-X)Z??, wherein X includes ammonium, imidazolium, pyridinium or phosphonium, Y is (CH2)n, n is an integer of 1-16, Z is I, and Z? is I, PF6, BF4, N(SO2CF3), NCS or N(CN)2.

Abstract: Organic dyes and photoelectric conversion devices are provided. The Organic dye has the structure represented by formula (I), wherein, n is an integral of 2-11; the plurality of X is independent and elected from the group consisting of and combinations thereof; R, R1, and R2 comprise hydrogen, halogen, C1-18 alkyl group, C1-18 alkoxy group, C3-18 heteroalkyl group, C3-20 aryl group, C3-20 heteroaryl group, C3-20 cycloaliphatic group or C3-20 cycloalkyl group, or R1 is connected to R2 to form a ring having 5-14 members; R3 comprise hydrogen, halogen, nitro group, amino group, C1-18 alkyl group, C1-18 alkoxy group, C1-18 sulfanyl group, C3-18 heteroalkyl group, C3-20 aryl group, C3-20 heteroaryl group, C3-20 cycloaliphatic group or C3-20 cycloalkyl group; and Z is hydrogen, alkali metal, or quaternary ammonium salt.

Abstract: The invention provides an electrolyte composition and dye-sensitized solar cell using the same. The electrolyte composition includes a diionic liquid of Formula: Z? (X—Y—X)Z?, wherein X includes ammonium, imidazolium, pyridinium or phosphonium, Y is (CH2)n, n is an integer of 1-16, Z is I, and Z? is I, PF6, BF4, N(SO2CF3), NCS or N(CN)2.