Is it possible to make a Material with a Black Material that “Glows” like in the image?
Here is a simple setup for a “black glow” material. You have to make a box with the door dimensions with one side open and place it in the door opening. Make sure that the box is a little bit smaller than the door opening just to avoid z-depth fighting. Then apply the material, change the direction as wished and the “Glow” intensity.
Edit: What the material is doing is just making a gradient that is based on the box local location and the direction (local based too) of the gradient is specified with the component mask inside the material. With this material you can change the box dimensions and rotation whilst keeping the gradient direction and size. 
Good luck!
