A method for manufacturing a multi-functional electronic device with a black phosphorous-based single channel, wherein the electronic device includes a channel layer, two electrodes spaced apart from the channel layer, and a gate electrode for generating an electric field in the channel layer, wherein the method comprises forming the channel layer, wherein forming the channel layer includes:
- forming a black phosphorous layer;
- disposing a mask pattern on a first region of the black phosphorous layer;
- and
- applying a mixture containing an ionic compound on a second region of the black phosphorous layer not covered by the mask pattern, thereby to electrostatically-dope the ionic compound onto the second region of the black phosphorous layer.