Crystal PN Junction (IMAGE) National Institutes of Natural Sciences Caption (a) Hopping conduction in disordered junction, (b) band conduction in crystalline junction. Credit NINS/IMS Usage Restrictions None License Licensed 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.