Organic light-emitting diodes and methods for assembly and emission control

A method of using molecular distribution to control the turn-on voltages and light emission of an electroluminescent device, said method comprising:

• providing a first electrode;
• coupling a conductive layer to said electrode, said conductive layer comprising molecular components distributed on said electrode;
• providing a second electrode in electrical contact with said conductive layer;
• and
• contacting a control layer on one of said electrodes or said conductive layer in a predetermined pattern of molecular components, said pattern defining at least one opening through said control layer, and said control layer molecular components comprising a silicon moiety and a hydrophobic terminus.