Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Humidity sensor device based on perovskite nanosheet array and its preparation method

A nanosheet array, humidity sensor technology, applied in instruments, scientific instruments, measuring devices, etc., to achieve the effects of fast response speed, large specific surface area, and wide response range

Inactive Publication Date: 2020-04-07
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these studies focus on iodine-based and bromine-based hybrid perovskite materials, while the systematic research and application of chlorine-based perovskite materials are rarely reported.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Humidity sensor device based on perovskite nanosheet array and its preparation method
  • Humidity sensor device based on perovskite nanosheet array and its preparation method
  • Humidity sensor device based on perovskite nanosheet array and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention is a perovskite (CH 3 NH 3 PbCl x I 3-x ) A humidity sensing device of a nanosheet array and a preparation method thereof, including a substrate, a buffer layer, a perovskite grain layer, a perovskite nanosheet array, and an electrode. Among them, the buffer layer, the perovskite grain layer, the perovskite nanosheet array are arranged on the substrate, and the two ends are electrodes. The substrate of the present invention is a glass substrate, but not limited to a glass substrate; the buffer layer is poly 3,4-ethylenedioxythiophene-polystyrene sulfonic acid (PEDOT:PSS), which can be formed by the wettability of the precursor lead salt film. Good alternative materials; perovskite nanosheet arrays are lead acetate (PbAc 2 ) film placed in methyl ammonium chloride and methyl ammonium iodide (CH 3 NH 3 Cl x I 3-x ) in an isopropanol solution, and finally, electrodes are plated on both ends of the perovskite nanosheet array, not limited to sil...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a perovskite (CH3NH3PbClxI3-x) nanosheet array-based humidity sensor and a production method thereof. The production method comprises the following steps: carrying out a chemical solution reaction technology to form a buffer layer poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate (PEDOT:PSS) on a glass substrate, drop-casting a lead acetate (PbAc2) film, placing the annealed PbAc2 film in a methylammonium chloride and methylammonium iodide (CH3NH3ClxI1-x) mixed isopropanol solution, and carrying out a reaction to prepare a perovskite nanosheet structure array; and annealing the produced nanosheet array, and carrying out vapor deposition of silver electrodes on two ends of the annealed nanosheet array through a hot evaporation technology in order to produce the perovskite humidity sensor. The production method has the advantages of low cost and simple process, and the perovskite nanosheet array-based humidity sensor has the advantages of high stability and sensitive response, and can be used to detect water vapor and other polar gases.

Description

technical field [0001] The invention relates to a humidity sensing device, in particular to a humidity sensing device of a perovskite nanosheet array and a preparation method thereof. Background technique [0002] Organic-inorganic hybrid perovskites (CH 3 NH 3 wxya 3 , X=Cl, Br, I) The carrier diffusion length of the material can reach the order of microns, and has long carrier lifetime, very high carrier mobility and strong wide band gap absorption, low Ur The Urbach energy indicates that the energy level disorder of the material is very low. These excellent photoelectric properties make it widely and in-depth research in the field of photoelectric conversion such as solar cells, light-emitting diodes, lasers and detectors. In addition, due to their novel photoelectric physical properties, nanomaterials have received continuous attention in recent years. Among them, perovskite nanostructures have higher stability, and luminescence based on perovskite quantum dots, nanow...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/12
CPCG01N27/121G01N27/125
Inventor 任宽宽曲胜春王智杰刘孔卢树弟岳世忠
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com