Printed Material Constrained By Well Structures And Devices Including Same

A method of forming an active electronic device comprising:

• depositing a functional layer over a substrate;
• selectively depositing a first patterned contact layer over said functional layer, said first patterned contact layer defining first and second electrodes of said active device;
• selectively additively depositing insulating material over at least a portion of said first patterned contact layer to form first and second wall structures such that at least a portion of said patterned contact layer over said first electrode and at least a portion of said patterned contact layer over said second electrode are exposed, said first and second wall structures defining a well region therebetween, and said exposed portions of said patterned contact layer over said first and second electrodes are within said well region;
• and
• selectively depositing a semiconductor layer from a solution within said well region such that said first and second wall structures confine said semiconductor layer therein, and said semiconductor layer within said well region is in physical and electrical contact with said exposed portion of said patterned contact layer over said first and second electrodes.