Remarkably, magnetotransport measurements revealed that coherent multi-carrier transport with finite n-type carriers show exceptionally high mobility over 3,200 cm2 V−1 s−1 and long phase coherence length surpassing 100 nm, in stark contrast to hole-carrier transport with 25,000 times lower mobility at low temperatures.

Like opioid receptors, N-type calcium channels occur throughout the nervous system.

Zhao’s team recently reported making an n-type single-crystal tin selenide by spiking it with bromine atoms.

Once n-type and p-type tin selenide devices are paired, researchers should have a clear path to making a new generation of ultra-efficient thermoelectric generators.

To make working devices, researchers also need an “n-type” version to conduct negative charges.