Pressure-induced polarity reversal of self-driven photocurrent in BiI3. (IMAGE)

Science China Press

Pressure-induced polarity reversal of self-driven photocurrent in BiI3.

Caption

In this experiment, a laser spot with a diameter of 10 µm was used to locally illuminate the sample, with no external bias applied. Above 5.5 GPa, the direction of the photocurrent reversed, indicating a p-n conductive type switching in BiI₃. Hall effect measurements further validated the change of the conductive type.

Credit

©Science China Press

Usage Restrictions

Use with credit.

License

Original content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.