New Perspectives in Photodetectors

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".

Deadline for manuscript submissions: 30 December 2025 | Viewed by 341

Special Issue Editors

College of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Interests: photodetector; plasmonics; metalens; low-dimensional materials; polarization; optics; solar cells

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Guest Editor
College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
Interests: optics; photonics; metalens; plasmonics; photodetector

Special Issue Information

Dear Colleagues,

Photodetectors play a crucial role in various fields, providing crucial data for informed decision-making and ensuring safety and security. They are indispensable tools for the monitoring and analysis of phenomena that are often imperceptible to the human senses. In scientific research, detectors enable the observation of subatomic particles, the detection of infrared radiation, and the measurement of environmental pollutants, driving advancements in physics, astronomy, and environmental science. In security applications, detectors safeguard critical infrastructure and public spaces by identifying potential threats such as weapons or explosives. The development of detectors has evolved significantly over time, starting with simple devices like thermocouples and progressing to sophisticated systems incorporating artificial intelligence and machine learning for enhanced accuracy and efficiency. Future advancements will likely focus on improving sensitivity, reducing size and cost, and integrating detectors with other technologies to expand their capabilities and applications.

This Special Issue aims to introduce new perspectives in photodetectors, including innovations in materials and structures, and report on the development of new photodetectors for controlling, processing, and transmitting information. We invite you to present research findings on the theoretical aspects and practical applications of photodetectors in this Special Issue of Photonics, entitled “New Perspectives in Photodetectors”. This Special Issue will feature original research articles as well as reviews.

Dr. Peng Wan
Dr. Xiujuan Zou
Guest Editors

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Keywords

  • organic photodetectors
  • low-dimensional material photodetectors
  • quantum dot photodetectors
  • ultrafast photodetection
  • photodetector arrays
  • infrared photodetection
  • visible-blind photodetectors
  • UV photodetectors
  • THZ photodetectors
  • plasmonic photodetectors
  • polarization-sensitive photodetectors
  • photodetectors for biological applications
  • photodetectors for communication systems
  • photodetectors for environmental monitoring

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Published Papers (1 paper)

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Research

14 pages, 26034 KiB  
Article
High-Performance Self-Powered Broadband Photodetectors Based on a Bi2Se3 Topological Insulator/ReSe2 Heterojunction for Signal Transmission
by Yun Wei, Peng Wan, Lijian Li, Tao He, Wanyu Ma, Tong Xu, Bingwang Yang, Shulin Sha, Caixia Kan and Mingming Jiang
Photonics 2025, 12(7), 709; https://doi.org/10.3390/photonics12070709 - 14 Jul 2025
Viewed by 152
Abstract
Topological insulators (TIs) hold considerable promise for the advancement of optoelectronic technologies, including spectroscopy, imaging, and communication, owing to their remarkable optical and electrical characteristics. This study proposes a novel combination of Bi2Se3 TIs and ReSe2 [...] Read more.
Topological insulators (TIs) hold considerable promise for the advancement of optoelectronic technologies, including spectroscopy, imaging, and communication, owing to their remarkable optical and electrical characteristics. This study proposes a novel combination of Bi2Se3 TIs and ReSe2 for self-powered broadband photodetectors with high sensitivity and fast response time. The Bi2Se3/ReSe2 heterojunction photodetector achieves broadband response spectra ranging for 375 nm to 1 μm. It demonstrates a significant responsivity of 64 mA/W at a wavelength of 600 nm (1 mW/cm2), exhibits a rapid response speed of 345 μs rise/336 μs fall time, and has a 3 dB bandwidth of 1.4 kHz under zero-bias conditions. The high performance can be attributed to the suitable energy band structure of Bi2Se3/ReSe2 and high carrier mobility in surface states of Bi2Se3. Excitingly, self-powered TIs photodetectors allow for high-quality signal transmission. The TIs employed in photodetectors can stimulate the production of new optoelectronic features, but they could also be used for highly integrated photonic circuits in the future. Full article
(This article belongs to the Special Issue New Perspectives in Photodetectors)
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