Is doped-silicon chips alien tech?

Well, we were doing some impressive stuff with vacuum tubes. Really impressive, and then, all of a sudden, we dropped that, and converted to silicon.

But, where did we get the idea for a doped-silicon chip?
Many say that it was alien tech reverse engineered.
And it might have been.

However, we must also look at history more closely.
Before we figured out doped-silicon, we went out rock hounding. We looked for semiconductors in nature. You may have heard of gallium diodes. Those were found rocks.

So, i don't really know. The alien tech reverse engineering timeline makes a WHOLE lot of sense.
But it is possible a guy figured it out. That first transistor was really crude.