Ultrafast Spectroscopy Maps Energy Flow in Semiconductors
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By
February 3, 2026
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4 min
Researchers at the University of Basel have made significant strides in understanding energy transfer in semiconductors, specifically germanium. They utilized a custom ultrafast spectroscopy setup to observe how excitation energy flows from charge carriers into lattice vibrations. Their findings revealed that optical phonons heat up within picoseconds before transferring energy to lower-energy acoustic phonons. This innovative approach allows for a detailed analysis of energy dynamics, crucial for enhancing the performance and thermal management of electronic devices, ultimately benefiting modern electronics development.
1. Energy dynamics in germanium are crucial for electronics. 2. Used ultrafast spectroscopy to track energy flow. 3. Optical phonons heat up within picoseconds. 4. Energy is transferred to acoustic phonons quickly. 5. Measurements allow insight into device efficiency. 6. Collaboration with simulations to interpret data. 7. Research aids in developing advanced electronic devices.
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