Fleeting electron-hole pairs are giving scientists a new window into optimizing light-emitting devices (LEDs). Using quantum ...
An electric charge (like a proton) creates an electric field in the region around it. This field points away from positive charges and decreases in strength as it gets farther away from the charge.
Researchers directly observed electron-hole pairs in light-emitting electrochemical cells, finding that ion-driven electric field changes affect recombination and that stable, lower-voltage fields ...
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