Photoelectrochemical (PEC) Detectors

This chapter explores the advanced field of photoelectrochemical (PEC) detectors, focusing on their principles, configurations, and diverse applications. It begins with an overview of the fundamental principles of PEC detection, including signal generation through the interaction of light with semiconductor photoelectrodes. The chapter then delves into various PEC detector configurations, such as flat-band electrodes, nanostructured electrodes, photoelectrochemical cells with reflectors, and integrated devices. Each configuration is analyzed for its advantages and limitations in enhancing PEC sensing performance. The chapter also covers the wide range of applications for PEC detectors, including environmental monitoring, biosensing, food safety, medical diagnostics, and energy harvesting. The conclusion highlights the current state of PEC detector technology and offers perspectives on future advancements, emphasizing material development, nanotechnology, integration with emerging technologies, sustainability, and data connectivity. This comprehensive overview underscores the potential of PEC detectors to revolutionize sensing technologies across multiple domains.