Selective p- and n-doping of Colloidal PbSe Nanowires to Construct Optoelectronic Devices

Selective p- and n-doping of Colloidal PbSe Nanowires to Construct Optoelectronic Devices - We report the controlled and selective doping of colloidal PbSe nanowire arrays to define pn junctions for electronic and optoelectronic applications. The nanowires are remotely doped through their surface, p-type by exposure to oxygen and n-type by introducing a stoichiometric imbalance in favor of excess lead.