SEMICONDUCTOR DEVICES INCLUDING SELF ALIGNED REFRACTORY CONTACTS AND METHODS OF FABRICATING THE SAME

摘要

Methods of forming semiconductor devices are provided by forming a semiconductor layer on a semiconductor substrate. A mask is formed on the semiconductor layer. Ions having a first conductivity type are implanted into the semiconductor layer according to the mask to form implanted regions on the semiconductor layer. Metal layers are formed on the implanted regions according to the mask. The implanted regions and the metal layers are annealed in a single step to respectively activate the implanted ions in the implanted regions and provide ohmic contacts on the implanted regions. Related devices are also provided.