A metal-flee purple H2Pc single crystal was synthesized by a facile solvothermal method, and its solubility and near-infrared （NIR） optical properties were also investigated due to its potential applications as a li...A metal-flee purple H2Pc single crystal was synthesized by a facile solvothermal method, and its solubility and near-infrared （NIR） optical properties were also investigated due to its potential applications as a light-emitting layer for OLEDs. The H2Pc single crystal is insoluble in 1-chlorine naphthalene and other organic solvents. It gives a wide absorption in the range from 620 nm to 679 nm and a wide emission in near 922 nm. As an active light-emitting layer, H2Pc was employed to fabricate electroluminescent （EL） devices with a structure of ITO/NPB （30 nm）/Alq3：H2Pc （30 nm）/BCP （20 nm）/ Alq3 （20 nm）/Al. The emission center is at 936 nm when the H2Pc doping concentration is 20 wt%. The doping concentration strongly governs the emission intensity. When doping concentration decreases from 10 wt% to 1 wt%, the emission intensity remarkably fades, and simultaneously the emission center undergoes a blue shift.展开更多
基金financially supported by the Ph.D. Initiative Science Foundation of Inner Mongolia University for the Nationalities(Nos. BS289, BS314)Natural Science Research Project of Inner Mongolia University for the Nationalities (No. NMDYB15076)the Fundamental Research Funds for the Central Universities (No. DUT14LK02)
文摘A metal-flee purple H2Pc single crystal was synthesized by a facile solvothermal method, and its solubility and near-infrared （NIR） optical properties were also investigated due to its potential applications as a light-emitting layer for OLEDs. The H2Pc single crystal is insoluble in 1-chlorine naphthalene and other organic solvents. It gives a wide absorption in the range from 620 nm to 679 nm and a wide emission in near 922 nm. As an active light-emitting layer, H2Pc was employed to fabricate electroluminescent （EL） devices with a structure of ITO/NPB （30 nm）/Alq3：H2Pc （30 nm）/BCP （20 nm）/ Alq3 （20 nm）/Al. The emission center is at 936 nm when the H2Pc doping concentration is 20 wt%. The doping concentration strongly governs the emission intensity. When doping concentration decreases from 10 wt% to 1 wt%, the emission intensity remarkably fades, and simultaneously the emission center undergoes a blue shift.
