Abstract:
According to example embodiments, a transistor includes a gate, a channel layer that is separate from the gate, a gate insulating layer between the gate and the channel layer, and a source electrode and a drain electrode respectively contacting a first region and a second region of the channel layer. The gate insulating layer includes an impurity metal containing region that includes an impurity metal and contacts the channel layer. The gate insulating layer includes an impurity metal non-containing region contacting the gate that is not doped with the impurity metal.