Charge narrowing absorption effect-based perovskite photoelectric detector having vertical energy gap gradient and fabrication method thereof

A photodetector and perovskite technology, applied in the field of photoelectric detection, can solve the problems of perovskite photodetector half-wave peak width and no wavelength selection, and achieve improved detection performance, low recombination loss, and reduced half-wave peak width Effect

Active Publication Date: 2019-06-18
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is: in order to solve the half-wave peak width of the perovskite photodetector and the problem of no wavelength sel

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
  • Charge narrowing absorption effect-based perovskite photoelectric detector having vertical energy gap gradient and fabrication method thereof
  • Charge narrowing absorption effect-based perovskite photoelectric detector having vertical energy gap gradient and fabrication method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1

[0041] A perovskite photodetector with vertical energy band gradient based on charge narrowing absorption effect, comprising a glass substrate 1 on which a first transparent conductive electrode layer 2 is plated, and the first transparent conductive electrode Layer 2 is spin-coated with a first hole transport layer 3, a perovskite sensitive layer a 4, and a first electron transport layer 5 from bottom to top. The first electron transport layer 5 is plated with a first electron transport layer from bottom to top. The hole blocking layer 6, the second transparent conductive electrode layer 7, the second transparent conductive electrode layer 7 is spin-coated sequentially from bottom to top with the second hole transport layer 8, the perovskite sensitive layer b 9, and the second electron The transport layer 10 and the second electron transport layer 10 are sequentially plated with a second hole blocking layer 11 and a third transparent conductive electrode layer...

Example Embodiment

[0068] Example 2

[0069] On the basis of embodiment 1, the difference between this embodiment and embodiment 1 is that the thickness of the perovskite sensitive layer a, the perovskite sensitive layer b, and the perovskite sensitive layer c is 1500nm, and the new Prepare the perovskite precursor solution a, the perovskite precursor solution b and the perovskite precursor solution c in the mixing ratio.

[0070] Dissolve methylamine lead chloride in DMF (NN dimethylformamide) solution and stir at 100°C for 6 hours to obtain perovskite precursor solution a; make methylamine lead chloride and methylamine lead bromide in a molar ratio of 1 : 2 Dissolve in DMF (NN dimethylformamide) solution and stir at 100°C for 6h to obtain perovskite precursor solution b; dissolve methylamine lead bromide in DMF (NN dimethylformamide) solution In, after stirring at 100°C for 6 hours, a perovskite precursor solution c was obtained.

[0071] Under standard test conditions, the light beam is drawn from...

Example Embodiment

[0072] Example 3

[0073] On the basis of embodiment 1, the difference between this embodiment and embodiment 1 is that the thickness of the perovskite sensitive layer a, the perovskite sensitive layer b, and the perovskite sensitive layer c is 800 nm, and the new Prepare the perovskite precursor solution a, the perovskite precursor solution b and the perovskite precursor solution c in the mixing ratio.

[0074] Dissolve methylamine lead iodine and methylamine lead bromide in DMF (NN dimethylformamide) solution at a molar ratio of 1.4:0.6, and dope with 0.33% by mass of PEIE. After stirring at 100°C for 6 hours, the obtained Perovskite precursor solution a; Dissolve methylamine lead iodine and methylamine lead bromide in a 1:2 molar ratio in DMF (NN dimethylformamide) solution, and dope with 0.33% PEIE at a mass ratio. After stirring for 6 hours at 100°C, the perovskite precursor solution b is obtained; the methylamine lead iodide and methylamine lead bromide are dissolved in DMF ...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a charge narrowing absorption effect-based perovskite photoelectric detector having vertical energy gap gradient and a fabrication method thereof. The perovskite photoelectricdetector comprises a glass substrate, a first transparent conductive electrode layer, a first hole transmission layer, a perovskite sensitive layer a, a first electron transmission layer, a first holeblocking layer, a second transparent conductive electrode layer, a second hole transmission layer, a perovskite sensitive layer b, a second electron transmission layer, a second hole blocking layer,a third transparent conductive electrode layer, a third hole transmission layer, a perovskite sensitive layer c, a third electron transmission layer, a third hole blocking layer, a metal electrode layer. By the perovskite photoelectric detector, the half-wave peak width of the optical detector is effectively narrowed, the detection performance of the perovskite optical detector is improved, lightwaves of three different bands can be simultaneously detected, moreover, the fabrication method is simple and effective and is suitable for mass production.

Description

technical field [0001] The invention relates to the field of photoelectric detection, in particular to a perovskite photodetector with vertical energy band gradient based on charge narrowing absorption effect and a preparation method thereof. Background technique [0002] A photodetector is a device that detects and measures the properties of light through the photoelectric effect, usually in the form of a photocurrent, through which the corresponding information of the detected light wave can be deduced. Photodetectors are widely used in various aspects, including surveillance imaging, surveying and mapping detection, environmental monitoring and biochemical medicine, etc. At present, optical detectors are mainly divided into four categories, namely, organic material detectors, inorganic material detectors, quantum dot material detectors, and perovskite material detectors. Although the technology of the first three types of detectors is relatively mature, they have problem...

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
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549
Inventor 黄江张磊宛晨侯思辉
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap