A new publication from Opto-Electronic Science overviews multiwavelength high-speed quantum well nanowire array micro-LED for next-generation on-chip optical communication. As the number of cores in a processor continues to grow, so too does the challenge of connecting them all together. Traditio
Researchers have highlighted the potential of on-chip nanophotonic systems as a solution to the challenges presented by traditional electrical networks. These systems utilize light for data transmission, offering increased bandwidth and speed.overviews multiwavelength high-speed quantum well nanowire array micro-LED for next-generation on-chip optical communication.
Key to on-chip optical networks are miniaturized light sources such as micro-/nano-scale lasers or light-emitting diodes . However, most developments on micro-/nano-LEDs are based on III-nitride material systems at visible wavelengths. There have been limited reports on high-speed infrared micro-LEDs at telecommunication wavelengths, indispensable for the future development of Li-Fi technology, photonic integrated circuits , and biological applications.
Figure 2. Schematic of fabricated nanowire array LED. L-I and I-V curves of a representative nanowire array LED. Voltage-dependent EL spectra at room temperature. Normalized voltage-dependent EL spectra from . Simulated voltage-dependent spontaneous emission spectra. Simulated emission spectrum at the bias of 1.2 V, showing the decoupled contribution from axial and radial quantum wells.
Figure 3 shows the representative photoluminescence spectra collected from nanowire arrays with different pitch sizes, showing longer wavelength PL emission from larger pitch nanowire arrays due to the increased QW thickness or indium incorporation into the QW.
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