Photoelectrochemical-Type Photodetectors Based on Ball Milling InSe for Underwater Optoelectronic Devices

Area of Science:

• Materials Science
• Optoelectronics
• Nanotechnology

Background:

• Development of efficient photodetectors for underwater applications is crucial.
• Indium Selenide (InSe) is a promising material for optoelectronic devices.

Purpose of the Study:

• To synthesize InSe nanosheets using a ball milling method.
• To fabricate and characterize photoelectrochemical-type photodetectors (PEC PDs) based on ball milled InSe (M-InSe).
• To evaluate the performance of M-InSe PEC PDs for underwater applications.

Main Methods:

• Synthesis of InSe nanosheets via ball milling.
• Fabrication of PEC PDs using M-InSe and simulated seawater as electrolyte.
• Characterization of optical absorption and photoresponse under visible light irradiation.
• Testing of prototype applications in wireless underwater optical communication and optical imaging.

Main Results:

• M-InSe nanosheets exhibit good visible light absorption (450-600 nm).
• M-InSe PEC PDs demonstrate self-powered photoresponse under 525 nm irradiation.
• Achieved high responsivity (0.8 mA/W), fast response time (28/300 ms), and good stability.
• Successful demonstration of prototype applications in wireless underwater optical communication and optical imaging.

Conclusions:

• Ball milling is an effective method for synthesizing InSe nanosheets for optoelectronic applications.
• M-InSe based PEC PDs show excellent performance and stability for underwater environments.
• M-InSe holds significant potential for future underwater optoelectronic devices and communication systems.