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Semiconductor-based microsensors are rapidly evolving by bringing together interdisciplinary research through sensing applications in physical, chemical and biomedical fields. This research holds the potential to revolutionize IoT sensor technologies and improve human lives. The semiconductor materials used in sensing applications include compound semiconductor materials such as AlGaN, InN and BN, nanomaterials such as silicon nanowires, carbon nanotubes, ZnO, TiO2 and NiO nanostructure, and 2D materials such as graphene, black phosphor and MoS2. The superior material properties have been designed into passive and active forms of signal transduction like resistive sensors and field effect transistor based sensors. Miniaturized form for compactness, short response times, ultra-high sensitivity, cost effectiveness and easy integration with mature microelectronic platforms are some of the advantages that fuel innovations in this field.
The present focus issue reports the novel and advanced sensor technologies that utilize semiconductor materials to enhance device characteristics for a multitude of diverse applications. Mainly the following topics are addressed in the issue:
- Biomedical sensors (field effect transistors: GaN, Si, graphene, carbon nanotubes)
- Gas sensors (nanostructures and compound semiconductors)
- Environmental monitoring and water quality control (Schottky diodes and nanocomposites)
- Optoelectronics (thin film transistors, bandgap engineering and photodetectors)
- Organic semiconductor devices (molecular imprinting)
- Package and circuit for semiconductor sensors
- Clinical diagnostics using semiconductor sensors and read-out systems
We would like to acknowledge and appreciate the authors for their impactful contributions, reviewers for their valuable time and efforts, and the ECS editorial staff for their effort to put this issue together. This focus issue is timely and provides a platform for encouraging further advances and breakthroughs in the field.