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Metal Halide Perovskites for Violet and Ultraviolet Light Emission
Sebastian Fernández1, Manchen Hu1, Tyler K Colenbrander1
1Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States.
ACS Nano
|June 18, 2026
Summary
Violet and ultraviolet light-emitting metal halide perovskites (MHPs) show promise for advanced optoelectronics. This review highlights progress and challenges in MHP materials and devices for future applications.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Emissive metal halide perovskites (MHPs) offer excellent color purity and tunable bandgaps for optoelectronic applications.
- Development of violet and ultraviolet (UV) light-emitting MHPs faces challenges in stability, charge transport, UV tunability, toxicity, and scalability.
Purpose of the Study:
- To review advancements in violet and UV light-emitting MHP nanomaterials and devices.
- To identify strategies for overcoming existing challenges in MHP development.
- To showcase the potential of violet and UV MHPs in diverse applications.
Main Methods:
- Review of materials synthesis and device fabrication techniques for MHPs.
- Exploration of various crystal structures and dimensions (thin films, nanoplatelets, nanocrystals).
- Investigation of lead-free MHP alternatives, including rare-earth metal halide perovskites.
Main Results:
- Progress in violet and UV MHP development across different material forms and dimensions.
- Identification of key challenges hindering widespread adoption.
- Demonstration of potential solutions and pathways forward.
Conclusions:
- Violet and UV MHPs are promising for next-generation optoelectronics.
- Addressing stability, charge transport, and scalability is crucial for MHP advancement.
- MHPs hold potential for applications in public health, 3D printing, and nanofabrication.
