Flexible photoelectric detector based on silver selenide quantum dots and manufacturing method

Abstract

The invention relates to a flexible photoelectric detector based on silver selenide quantum dots, which is characterized in that non-toxic silver selenide quantum dots are introduced to replace lead salt quantum dots to serve as a light absorption material, the lead-free and non-toxic effects of the detector can be achieved, and the design of the non-toxic flexible photoelectric detector is obtained in combination with the design of a flexible substrate. In addition, graphene or molybdenum disulfide with high electron mobility is further added as a charge extraction material in a region between the flexible substrate (1) and the silver selenide quantum dot layer (2), so that the responsivity of the photoelectric detector can be improved, and the flexible photoelectric detector with high responsivity is further obtained; and the flexible photoelectric detector is more suitable for being applied to wearable equipment, and the use safety and stability of the wearable equipment can be effectively improved. The invention further designs a manufacturing method for the photoelectric detector, a brand-new manufacturing mode is designed for the designed photoelectric detector structure through cooperation of multiple processes, the process standard for designing photoelectric detector manufacturing can be improved, and the safety and stability of the photoelectric detector are guaranteed.

Description

technical field [0001] The invention relates to a flexible photodetector based on silver selenide quantum dots and a manufacturing method, belonging to the technical field of semiconductor optoelectronic devices. Background technique [0002] Photodetectors are sensors used for photoelectric detection. With the popularity of smart devices, flexible photodetectors can be widely used in wearable devices. Benefiting from the quantum confinement effect, semiconductor quantum dots have shown a variety of light-absorbing materials. Superior properties, such as adjustable absorption wavelength with size and large absorption coefficient, etc.; however, the light-absorbing quantum dots commonly used in photodetectors are lead sulfide and lead selenide quantum dots containing toxic heavy metal lead, which limits the existing optoelectronics. The application of detectors in wearable devices. Contents of the invention [0003] The technical problem to be solved by the present inventi...

AI Technical Summary

Problems solved by technology

[0002] Photodetectors are sensors used for photoelectric detection. With the popularity of smart devices, flexible photodetectors can be widely used in wearable devices. Benefiting from the quantum confinement effect, semiconductor quantum dots have shown a variety of light-absorbing materials. Superior properties, such as adjustable absorption wavelength with size and large absorption coefficient, etc.; however, the light-absorbing quantum dots commonly used in photodetectors are lead sulfide and lead selenide quantum dots containing toxic heavy metal lead, which limits the existing optoelectronics. Applications of detectors in wearable devices

Images