A multicolor organic light emitting device employs vertically stacked layers of double heterostructure devices which are fabricated from organic compounds. The vertical stacked structure is formed on a glass base having a transparent coating of ITO or similar metal to provide a substrate. Deposited on...http://www.google.com.au/patents/US20020153243?utm_source=gb-gplus-sharePatent US20020153243 - METHOD OF FABRICATING TRANSPARENT CONTACTS FOR ORGANIC DEVICES