Plausible POD's for the transistor to not exist

I'm looking for a realistic POD for the transistor to not exist in a TL I'm working on. So far I've got the two entries you can read below. Would you say these are plausible enough? Seeing that the main POD of my TL is in 1941, I would ideally only need POD's for the transistor after 1941.

SEPTEMBER 4TH 1943
American physicist and electrical engineer John Bardeen dies in a car crash accident.

MARCH 19TH 1947
A large fire destroys an entire research wing at the Bell Telephone Laboratories on Murray Hill, New Jersey. All work related to an invention called a “transistor” is lost in the incident. William Bradford Shockley, the research group manager does not manage to secure any continued funding from the board of directors, since the group was at a standstill lasting eight months already, after experiments failed every time in all sorts of configurations. Physicists on the project are diverted to work on improving existing vacuum tube technology, making them smaller and more durable. Economically, no alternatives to vacuum tube technology appear to be viable, either impossible to manufacture, too expensive or too fragile for practical use.
 
Bell labs were not the only ones involved in transistor research. Semiconductor technology dates back to the early 20. century and first ideas regarding a transistor were patented as early as 1925.
You may delay it a bit, but not by much. A lot of research took also place in Germany, so it might also depend on your PODs consequences for Germany.
 
What exactly are you trying to do here? Getting rid of the Shockley-style Bipolar transistor is probably quite easy, but the FET design pre-dated them and making it practical requires a better understanding of semiconductors (which was done by Shockley et al in OTL) which is going to happen eventually somewhere or other. You could even shrink vacuum tubes enough that you no longer need a vacuum, at which point it becomes pretty easy to use them in integrated circuits. The demand and the basic technology is there, so it's going to happen somehow or other.
 
Top