Do I understand phototherapy for newborn jaundice correctly?? Bilirubin to Lumirubin

I'm a nursing student fyi, so just wanted a deeper explanation of phototherapy. Here is what I do know: bilirubin is a byproduct of broken down RBCs, which is conjugated in the liver and kicked out of the body in urine and feces. Newborns immature livers sometimes cannot keep up with the rate their RBCs are being broken down. but the later the jaundice develops, the less harmful it is for the baby (<24 hrs old is most concerning). So I want to clarify about the UV phototherapy - do I understand this correctly? The light passes through the skin and converts the bilirubin into something called "lumirubin", which is water soluble, and therefore more easily conjugated in the liver, and more easily excreted from the body, right??? Can you guys give me some more info on this biochemical reaction the light has on the bilirubin molecules? I like to know the details hehe. THANKS! merry christmas

You can try starting here.
http://emedicine.medscape.com/article/97…