# US 2021/0241979 A1 · Wide spectrum detector and preparation method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0241979 A1 - Document ID: US20210241979A1 - Status: Published application - Kind: A1 - Application number: 17/147,612 - Filed: 2021-01-13 - Published: 2021-08-05 - Earliest claimed: 2020-01-14 - Assignees: Tianjin University - Applicants: Tianjin University - Inventors: Yating ZHANG; Yifan LI; Tengteng LI; Qingyan LI; Jianquan YAO - Web page: https://patentgrep.com/patent/US20210241979A1 ## CPC - H10K 85/50: Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3 - H01G 9/20: Light-sensitive devices - H10K 30/451: {comprising a metal-semiconductor-metal [m-s-m] structure} - H10K 30/81: Electrodes - H10K 30/10: comprising heterojunctions between organic semiconductors and inorganic semiconductors - H10K 30/40: comprising a p-i-n structure, e.g. having a perovskite absorber between p-type and n-type charge transport layers - H10K 30/50: Photovoltaic [PV] devices - Y02E 10/549: Organic PV cells - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A wide spectrum detector and a preparation method. The detector includes: a substrate and at least one detection unit, wherein the at least one detection unit is provided on the substrate and the at least one detection unit includes: two metal electrodes and a perovskite material layer, wherein the perovskite material layer is in ohmic contact with the two metal electrodes. ## Claims ### Claim 1 A wide spectrum detector, comprising: a substrate; and at least one detection unit provided on the substrate, the at least one detection unit comprising: two metal electrodes, and a perovskite material layer in ohmic contact with the two metal electrodes. ### Claim 2 (depends on 1) The detector according to claim 1, wherein the at least one detection unit comprises one detection unit, wherein the one detection unit comprises: a first metal electrode of the two metal electrodes provided on the substrate; the perovskite material layer provided on the first metal electrode; and a second metal electrode of the two metal electrodes provided on the perovskite material layer. ### Claim 3 (depends on 2) The detector according to claim 2, wherein a size of the first metal electrode is smaller than that of the substrate; a size of the perovskite material layer is smaller than or equal to that of the first metal electrode; and a size of the second metal electrode is smaller than that of the perovskite material layer. ### Claim 4 (depends on 2) The detector according to claim 2, wherein the first metal electrode and the second metal electrode are different kinds of metal electrodes. ### Claim 5 (depends on 2) The detector according to claim 2, wherein the first metal electrode and the second metal electrode are the same kind of metal electrode. ### Claim 6 (depends on 1) The detector according to claim 1, wherein the substrate has conductivity and serves as a first metal electrode of the two metal electrodes; the perovskite material layer is provided on the substrate; and a second metal electrode of the two metal electrodes is provided on the perovskite material layer. ### Claim 7 (depends on 1) The detector according to claim 1, wherein the at least one detection unit comprises one detection unit, wherein the one detection unit comprises: a perovskite material layer spin-coated on the substrate; and the two metal electrodes provided on the perovskite material layer, wherein a distance between the two metal electrodes is within a preset range, so as to form a channel between the two metal electrodes. ### Claim 8 (depends on 7) The detector according to claim 7, wherein a size of the perovskite material layer is smaller than or equal to that of the substrate, and a sum of sizes of the two metal electrodes is smaller than that of the perovskite material layer. ### Claim 9 (depends on 1) The detector according to claim 1, wherein a thickness of the perovskite material layer is between 100 nm and 1 μm. ### Claim 10 (depends on 1) The detector according to claim 1, wherein the at least one detection unit comprises at least two detection units, and the at least two detection units are arranged in a plane or in a line. ### Claim 11 A method for preparing a wide spectrum detector, the method comprising: preparing a first metal electrode on or as a substrate; preparing a perovskite material layer on the first metal electrode; and preparing a second metal electrode on a side of the perovskite material layer away from the first metal electrode. ### Claim 12 (depends on 11) The method according to claim 11, wherein before preparing a second metal electrode on a side of the perovskite material layer away from the first metal electrode, the method further comprises subjecting the first metal electrode to an ultraviolet ozone treatment, so as to improve adhesivity between the perovskite material layer and the first metal electrode. ### Claim 13 (depends on 11) The method according to claim 11, wherein preparing a perovskite material on the first metal electrode comprises using a spin-coating method or an evaporation method to prepare the perovskite material on the first metal electrode. ### Claim 14 (depends on 11) The method according to claim 11, wherein a thickness of the perovskite material layer is between 100 nm and 1 μm. ### Claim 15 (depends on 11) The method according to claim 11, wherein the first metal electrode is prepared on the substrate and wherein a size of the first metal electrode is smaller than that of the substrate; a size of the perovskite material layer is smaller than or equal to that of the first metal electrode; and a size of the second metal electrode is smaller than that of the perovskite material layer. ### Claim 16 A method for preparing a wide spectrum detector, the method comprising: preparing a perovskite material layer on a substrate; and preparing two metal electrodes on the perovskite material layer, wherein a distance between the two metal electrodes in the horizontal direction is within a preset range. ### Claim 17 (depends on 16) The method according to claim 16, wherein a size of the perovskite material layer is smaller than or equal to that of the substrate, and a sum of sizes of the two metal electrodes is smaller than that of the perovskite material layer. ### Claim 18 (depends on 16) The method according to claim 16, wherein a thickness of the perovskite material layer is between 100 nm and 1 μm.