AI Article Synopsis
- Multi-wavelength visible light emitters are essential for solid-state lighting, but current methods face issues like phosphor complications and complex assembly.
- A new platform integrates tailored emission wavelengths on a single chip using flexible 3D topographies, allowing for localized variations in In composition for InGaN-based LEDs.
- This innovation enables monolithic integration of three colors (violet, blue, green) with independent electrical control, paving the way for customizable spectral control in future lighting and display technologies.
Article Abstract
Multi-wavelength visible light emitters play a crucial role in current solid-state lighting. Although they can be realized by combining semiconductor light-emitting diodes (LEDs) and phosphors or by assembling multiple LED chips with different wavelengths, these design approaches suffer from phosphor-related issues or complex assembly processes. These challenges are significant drawbacks for emerging applications such as visible light communication and micro-LED displays. Herein we present a platform for tailored emission wavelength integration on a single chip utilizing epitaxial growth on flexibly-designed three-dimensional topographies. This approach spontaneously arranges the local emission wavelengths of InGaN-based LED structures through the local In composition variations. As a result, we demonstrate monolithic integration of three different emission colors (violet, blue, and green) on a single chip. Furthermore, we achieve flexible spectral control via independent electrical control of each component. Our integration scheme opens the possibility for tailored spectral control in an arbitrary spectral range through monolithic multi-wavelength LEDs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10403568 | PMC |
| http://dx.doi.org/10.1038/s41598-023-39791-2 | DOI Listing |
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