High-Dimensional Acousto-optoelectric Correlation Spectroscopy Reveals Coupled Carrier Dynamics in Polytypic Nanowires

The authors combine acousto-optoelectric and multichannel photon correlation spectroscopy to probe spatiotemporal carrier dynamics induced by a piezoelectric surface acoustic wave (SAW). technique is implemented combining phase-locked optical microphotoluminescence simultaneous three-channel time-resolved detection. From the recorded time-correlated single-photon-counting data, time transients of individual channels second- third-order functions are obtained with subnanosecond resolution. method validated probing correlations SAW-driven between three decay single polytypic semiconductor nanowire on conventional ${\mathrm{Li}\mathrm{Nb}\mathrm{O}}_{3}$ SAW delay line chip. can be readily applied other types nanosystems probes SAW-regulated charge-state preparation in quantum dots, charge-transfer processes van der Waals heterostructures, or hybrid nanoarchitectures.