Hello, I have heard about Nuclear "Test Stations" for vehicles that pass through customs, etc that use some type of monitor or screen to detect for neutrons and other forms of radiation.

I've also heard of neutron detectors made out of a gel in a tube and even just plain water.

My question is what would be the effect of a neutron or even a different form of radiation passing through a oled screen or something like a laptop screen that is backlit? Would you be able to see anything like a "blip" or some type of distortion in the screen as it passes through?

 

https://indico.cern.ch/event/43007/...27918/1313785/PosterEIROSchool_CGuardiola.pdf

The usual key ingredient is B10 (a common Boron isotope) layer, a neutron absorber. This can produce an alpha particle that be be seen with a scintillator or detected with other types of charged particle detectors.

The OLED Display is just a display on the cheap Radiation detectors online.

 

My question is what would be the effect of a neutron or even a different form of radiation passing through a oled screen or something like a laptop screen that is backlit? Would you be able to see anything like a "blip" or some type of distortion in the screen as it passes through?

Not likely, as neutrons go through most materials mostly unimpeded.
You need a neutron absorber, such as nsaspook stated.

 

One of the World leaders taking about 85% of whole neutron detectors made on the planet is kilometer off me here in Riga. Name BSI or Baltic Scientific Instruments. The sensor is high vacuum cryogenic temperatures weak boron ions implanted high purity germanium crystall.
If to create a diy, probably there may be considered a metalls becoming radioactive in neutron radiaion, for example aluminium, and measure the gamma from that aluminium. https://www.usgs.gov/usgs-triga-reactor/neutron-activation-analysis and https://en.wikipedia.org/wiki/Neutron_activation

However aluminium is not any very sensitive substance. Most best are Dy, Eu with 1 picogram sensitivity, next one order worse are In, Lu, Mn and two order worse are Au, Ho, Ir, Re, Sm, W . However at giant doses, where sensitivity must be flattened, the right metals are Pb, S with 1E7 fold less sensitivity. For Al the sensitivity figure is 1E4.