NOVELTY - A photoactive composition comprises (wt.% based on the total weight of the photoactive composition): at least one first host material having a highest occupied molecular orbital (HOMO) energy level (50-99); an emissive dopant (1-10); and a non-emissive dopant (0.1-10), where the non-emissive dopant is an organometallic iridium complex having a HOMO energy level shallower than the HOMO energy level of the host.    USE - As photoactive composition in electronic device (claimed) such as organic photoactive electronic devices e.g. organic light emitting diodes (OLED) for OLED displays, photodetectors, photovoltaic devices and semiconductor devices. The devices also include devices that convert electrical energy into radiation e.g. LED or diode laser, devices that detect signals through electronic processes e.g. photodetectors, photoconductive cells, photoresistors, photoswitches, phototransistors, phototubes, IR detectors and biosensors, devices that convert radiation into electrical energy e.g. photovoltaic device or solar cell and devices that include at least one electronic component that include at least one semiconductor layer e.g. transistor and diode.    ADVANTAGE - The device incorporating the composition exhibits improved efficiency and improved device lifetime; and can be manufactured by a simple manufacturing process. The amount of non-emissive dopant maximizes the efficiency and lifetime improvements of device without excessive voltage increase.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electronic device (100) comprising: an anode (110); hole transport layer (130); a photoactive layer (140); an electron transport layer (150); and a cathode (160), where the photoactive layer comprises (wt.% based on the total weight of the photoactive composition): at least one first host material (50-99) having a HOMO energy level; an emissive dopant (1-10); and a non-emissive dopant (0.1 to 10), where the non-emissive dopant is an organometallic iridium complex having a HOMO energy level shallower than the HOMO energy level of the host.    DESCRIPTION OF DRAWING(S) - The figure shows schematic view of organic device.    Electronic device (100)    First electrical contact layer/anode layer (110)    Hole injection layer (120)    Hole transport layer (130)    Photoactive layer (140)    Electron transport layer (150)    Second electrical contact layer/cathode layer (160)