Recent progress in ultraviolet photodetectors based on low-dimensional materials

Area of Science:

• Materials Science
• Optoelectronics
• Nanotechnology

Background:

• Conventional ultraviolet (UV) photodetectors (PDs) face limitations including low sensitivity, slow response times, and high manufacturing costs.
• Low-dimensional materials (LDMs) exhibit unique optoelectronic properties like quantum confinement and tunable bandgaps, making them promising for next-generation UV-PDs.

Purpose of the Study:

• To provide a comprehensive review of UV-PDs based on 0D, 1D, and 2D LDMs and their heterostructures.
• To highlight recent advancements in LDM-based UV-PD performance across the entire UV spectrum.
• To address key challenges such as limited spectral range and high dark current in UV photodetection.

Main Methods:

• Systematic review of existing literature on low-dimensional materials for UV photodetector applications.
• Analysis of recent research focusing on enhancing UV-PD performance metrics.
• Exploration of diverse application fields for LDM-based UV-PDs.

Main Results:

• LDMs significantly improve UV-PD sensitivity, response speed, and cost-effectiveness compared to conventional technologies.
• Recent advances have addressed spectral range limitations and reduced dark current in LDM-based UV-PDs.
• LDM-based UV-PDs demonstrate broad applicability in fields ranging from medicine to space science.

Conclusions:

• Low-dimensional materials are revolutionizing UV photodetector technology, offering superior performance and versatility.
• Continued research into LDM-based UV-PDs is crucial for overcoming current challenges and unlocking their full potential.
• This review provides essential insights into the future trajectory of UV photodetection driven by advanced materials.