Micro-nano Optical Structure Materials and Their Applications

Dear Colleagues,

Micro-nano optical structures—which rely on local resonance, electromagnetic field enhancement, the slow-light effect, and so on—could effectively manipulate the interaction characteristics between light and matter (such as atoms, molecules, quantum dots, and nonlinear materials). This concept finds extensive applications in photon integration, sensitive signal detection and recognition, biochemical sensing, super-resolution microscopic imaging, efficient solar cell and light-emitting device development, advancements in disease diagnosis and treatment, environmental monitoring practices, and many other crucial domains.

As an underlying component in solar cells or other optoelectronic devices, micro-nano structural materials give these devices unique optical, electrical, and mechanical properties, and provide a way to develop new and functional flexible photonic and electronic devices. This way of optimizing the structure of photoelectric devices can result in a change in the refractive index gradient at their window layer, which can effectively inhibit reflection and generate surface plasmon resonance near the metal structure. Ultimately, this can enhance light absorption and, importantly, lead to improvements to the overall performance of the photoelectric device.

By constructing isoplasmon heterogeneous nanostructures, plasmon materials with a highly efficient light capture ability (and their interaction with neighbouring materials), could enhance the energy conversion efficiency of photon-electrons and photon–chemical interactions in photovoltaic and photocatalysis processes and optical processes in a variety of linear (fluorescence) and nonlinear (second harmonic, multi-photon emission) manners. The introduction of micro-nano structures into metal halide perovskites can further improve their photoelectric performance and chemical and environmental stability. Further, micro-nano structures can enhance the optical absorption band gap effect through their anti-reflection properties, scattering enhancement, resonance mode, and PC light-trapping strategies.

Prof. Dr. Yanxia Cui
Guest Editor

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• surface plasmon
• photodetector
• perovskite
• micro- and nano-scale optical structures
• imaging device