The record
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- Scientists identified that the combination of the hot phonon bottleneck and the Burstein–Moss effect significantly slows the cooling process of hot electrons in tin-based perovskite materials.
- These materials retain excess energy for nanoseconds instead of the typical picosecond timescale.
- Researchers confirmed the results using computer simulations after initial experimental observations seemed anomalous.
- This discovery could aid the development of hot-carrier solar cells that minimize energy loss and improve solar panel efficiency.
What to watch next
- Research into practical methods for extracting retained energy from hot-carrier solar cells
- Application of these findings to actual device designs
Who said what4
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L. Jan Anton Koster
researcher
4 quotes · 1 outlet
“The measurements were clear, but we didn’t understand the physics behind this.”
In the article
…simulations to investigate how electrons transfer energy within the material and determine why the cooling process was taking so long. Koster explained the challenge of interpreting the experimental findings, saying, “ The measurements were clear, but we didn’t understand the physics behind this. ” He added, “We even started to doubt the measurements ourselves.” The researchers first examined the hot phonon bottleneck, a mechanism that can slow energy loss through interactions between electrons and lattice…
“We even started to doubt the measurements ourselves.”
In the article
…why the cooling process was taking so long. Koster explained the challenge of interpreting the experimental findings, saying, “The measurements were clear, but we didn’t understand the physics behind this.” He added, “ We even started to doubt the measurements ourselves. ” The researchers first examined the hot phonon bottleneck, a mechanism that can slow energy loss through interactions between electrons and lattice vibrations. However, the process alone could not explain the cooling…
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Named Netherlands · ACS Energy Letters · L. Jan Anton Koster · Maria Antonietta Loi · Tim Faber · University of Groningen
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