I own a dehydrator and dry a lot of herbs and other things like tomatoes and bell peppers. It is cheaper in the long run to use a dryer as it uses almost no power and you do not record the oven in the meantime.
This makes be a sweet paprika called Edelsüss or Sweet Paprika. If you want a little more “bite” in, you can add 1-2 chillies for pungency, this is called a Rose paprika (it “stings like a rose” I guess).
You can use all colours bell peppers. Red ones gives a redder paprika. Greens makes the paprika darker and most yellow makes the paprika lighter in colour. It doesn’t affect the the taste much, the paprika powder becomes sweetest with the most reds and a deeper but still sweet taste with the greens.
10-12 bell peppers
Wash and de-kernel all peppers
Slice them inti smaller pieces
Place on a baking tray and dry at 50° C in oven or in dehydrator for 10-12 hours
Grind all dried bell peppers in a coffee or spice grinder