CuO Nanobelt Array-Based Omnidirectional UV-Visible-NIR Photoelectrochemical Photodetectors
Junxin Zhou1, Qiyue Gao1, Yuan Zhang1
1College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China.
ACS Applied Materials & Interfaces
|December 11, 2024
Summary
This study developed high-performance, self-powered CuO nanobelt array photoelectrochemical photodetectors (PEC PDs) for underwater applications. These devices demonstrate excellent responsivity and omnidirectional detection in simulated seawater.
Area of Science:
- Materials Science
- Optoelectronics
- Electrochemistry
Background:
- Photoelectrochemical photodetectors (PEC PDs) offer low cost, high sensitivity, and self-powered operation for underwater devices.
- Current challenges include achieving high-performance, omnidirectional visible light detection in seawater.
Purpose of the Study:
- To synthesize and characterize CuO nanobelt arrays (NAs) for high-performance, omnidirectional underwater PEC photodetectors.
- To evaluate the performance of these PEC PDs using simulated seawater as an electrolyte.
Main Methods:
- Low-temperature solution synthesis of CuO nanobelt arrays on copper wire, followed by annealing.
- Fabrication of self-powered PEC PDs.
- Testing of photoresponse, responsivity, response time, stability, and omnidirectional detection in simulated seawater.
Main Results:
- Successfully synthesized CuO NA PEC PDs with UV-vis-NIR photoresponse (365–850 nm).
- Achieved high responsivity (-83.18 mA/W at 455 nm) and fast response times (28/140 ms) in simulated seawater.
- Demonstrated excellent 360° omnidirectional photodetection and stability, surpassing previous PEC PDs in seawater.
Conclusions:
- CuO NA PEC PDs show significant potential for underwater optoelectronic applications due to their superior performance in seawater.
- This work advances the development of omnidirectional visible light detectors for underwater environments.
