OkazakiLight bouncing inside thin films can mimic molecular vibrations.
Researchers have read that infrared signal as molecules responding to light-generated charges in perovskite solar materials.
Jun Nishida of Japan’s Institute for Molecular Science found charges change how infrared light reflects and transmits within film layers.
Nishida’s study is theoretical, a calculation rather than a new measurement.
Which published spectra carry the artefact remains for experimenters to check.
How each outlet framed it
- Phys.org
- shows the perovskite infrared signal can come from light interference in the film itself, not molecular vibrations
Sources: Phys.org