The present invention provides electronic devices comprising novel polymer compositions which provide for enhanced device performance. The polymer compositions employed comprise a polymeric component and a novel organic iridium compound comprising at least one cyclometallated ligand and at least one ketopyrrole ligand. The organic iridium compounds used in the polymer compositions are referred to as Type (1) organic iridium compositions and are constituted such that no ligand of the novel organic iridium compound has a number average molecular weight of 2,000 grams per mole or greater (as measured by gel permeation chromatography). In one aspect, the polymeric component may be an electroactive polymer. In one aspect, the present invention provides optoelectronic devices, such as OLED devices and photovoltaic devices. In another aspect, the invention provides OLED devices exhibiting enhanced color properties and light output efficiencies.