Some years ago, I set out to make my own OLEDs. This took a lot of persistence as many materials providers, manufacturers, and researchers refused to work with me, some of them providing their own brand of discouraging words along the way. Luckily, I was able to find several companies and people researching and working in the field who were very helpful.
Anatomy of an OLED
I was able to successfully make several differently-colored devices of varying quality level. In some cases I used indium as a cathode. Here’s what the successful stack I chose looks like: