Unlock instant, AI-driven research and patent intelligence for your innovation.

Simple preparation method of flexible photoelectric detector

A photodetector and flexible technology, applied in the field of photodetectors, can solve problems such as difficulty in obtaining single crystal stacking structures, poor quality of perovskite thin films, complicated methods, etc. The effect of simple process

Pending Publication Date: 2022-05-27
ZHENGZHOU UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These traditional methods mentioned above are complex and time-consuming
More importantly, the quality of perovskite films prepared by these methods is poor, and it is difficult to obtain single-crystal stacked structures.

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
  • Simple preparation method of flexible photoelectric detector
  • Simple preparation method of flexible photoelectric detector
  • Simple preparation method of flexible photoelectric detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Construct electrodes on a flexible base material. Use a Deli 9B pencil to write 20 times on Yalong Paper Co., Ltd. (Kunshan) printing paper with the aid of a ruler and a template to form a set of parallel and uniform electrode strips with a spacing of 300 μm.

[0039] 2) The PbBr 2 and CH 3 NH 3 Br (molar ratio of 1:1) was dissolved in DMF, and stirred at 60 °C for 6 h to obtain 0.5 mol / LCH 3 NH 3 PbBr 3 solution.

[0040]3) Put the perovskite precursor solution obtained in step (2) into a Geemarker brand G-30 commercial pen, use the pen to write 15 times on the printing paper where the electrodes are constructed, and anneal at 80°C for 2min , a flexible photodetector was fabricated. The perovskite film in the prepared flexible photodetector has a regular structure and is a single-crystal stacking structure, and the crystals in the film are well connected to each other. Under the irradiation of a 405nm UV lamp and a bias voltage of 4V, the responsivity of the...

Embodiment 2

[0042] 1) Construct electrodes on a flexible base material. Write 20 times on Yalong Paper Co., Ltd. (Kunshan) printing paper with a Deli 9B pencil with the aid of a ruler and a template to form a set of parallel and uniform electrode strips, the electrode length is 10mm, and the electrode strip spacing is 300μm. Repeat the above steps to prepare a 17*15 electrode array on the copy paper.

[0043] 2) The PbBr 2 and CH 3 NH 3 Br (molar ratio of 1:1) was dissolved in DMF, and stirred at 60 °C for 6 h to obtain 0.5 mol / LCH 3 NH 3 PbBr 3 solution.

[0044] 3) Put the perovskite precursor solution obtained in step (2) into the Geemarker brand G-30 commercial pen, and use the pen to write 15 times on the printing paper with the electrode array constructed, and carry out the test at 80°C. After annealing, a flexible photodetector array can be obtained. A patterned letter "H" reticle is placed between the photodetector array and the light source to enable optical communication...

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 belongs to the technical field of photoelectric detectors, and discloses a simple preparation method of a flexible photoelectric detector. According to the invention, perovskite is used as a photosensitive layer, pencil graphite is used as an electrode, paper is used as a base material, and the flexible photoelectric detector is prepared by using a writing method. Raw materials needed for device preparation are convenient to obtain, the cost is low, the method is high in universality, preparation can be conducted on various paper base materials, the preparation process is simple, the method can be used for preparing large-area arrayed photoelectric detectors, and the method has great significance in promoting preparation of flexible devices.

Description

technical field [0001] The invention belongs to the technical field of photodetectors, and in particular relates to a simple preparation method of a flexible photodetector. Background technique [0002] A photodetector is a device that can convert optical signals into electrical signals. It has important applications in optical communication, environmental monitoring, imaging, and biosensors. As a solution-processable material, perovskite has the characteristics of tunable band gap, high carrier mobility, and large light absorption coefficient, and has been widely used in solar cells, light-emitting diodes, photodetectors and lasers. In recent years, flexible optoelectronic devices have attracted extensive attention due to their promising applications in wearable devices, biosensors, and smart textiles. To fabricate flexible optoelectronic devices, all photosensitive materials, electrodes, and substrates must be optimized to meet the device requirements for flexibility, lig...

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 Applications(China)
IPC IPC(8): H01L51/48H01L51/46
CPCH10K71/00H10K71/60H10K85/60Y02E10/549
Inventor 张婷谷振坤张沙沙赵如黛王世珩郭路通李铁生张懿强宋延林
Owner ZHENGZHOU UNIV