Microring light-emitting devices with self-assembled multilayer structuresbased on poly(p-phenylene vinylene)s

Periodic multilayer structures of poly(p-phenylene vinylene)s have been fab ricated by a self-assembly method on flat surfaces and round surfaces of op tical fibers. Alternating multilayers consisting of poly(1,4-(2-(5-carboxyp entyloxy)-5-methoxyphenylene)vinylene) and poly(p-phenylene vinylene) have been adsorbed onto the positively charged substrates and the optical proper ties have been studied. The periodic multilayers with microring geometry ha ve also been fabricated around the quartz fibers, and the optical propertie s and yellow electroluminescence from a light-emitting device with microrin g geometry have been investigated.