Formation of a stable p-n junction in a liquid-gated MoS2 ambipolar transistor.

Zhang, Y J; Ye, J T; Yomogida, Y; Takenobu, T; Iwasa, Y · Nano Lett · 2013

basic_science · Level V

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Abstract

Molybdenum disulfide (MoS2) has gained attention because of its high mobility and circular dichroism. As a crucial step to merge these advantages into a single device, we present a method that electronically controls and locates p-n junctions in liquid-gated ambipolar MoS2 transistors. A bias-independent p-n junction was formed, and it displayed rectifying I-V characteristics. This p-n diode could perform a crucial role in the development of optoelectronic valleytronic devices.