Ultrasensitive photodetectors based on monolayer MoS2

Two-dimensional materials are an emerging class of new materials with a wide range of electrical properties and potential practical applications. Although graphene1 is the most well-studied two-dimensional material, single layers of other materials, such as insulating BN (ref. 2) and semiconducting MoS2 (refs 3, 4) or WSe2 (refs 5, 6), are gaining increasing attention as promising gate insulators and channel materials for field-effect...