Probing the Importance of Charge Balance and Noise Current in WSe2/WS2/MoS2 van der Waals Heterojunction Phototransistors by Selective Electrostatic Doping. - Ra HS; Jeong MH; Yoon T; Kim S; Song YJ; Lee JS (Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2020)