| 标题 |
 Electroluminescence from Triplet Excited States of Benzophenone 二苯甲酮三重激发态的电致发光
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| 网址 | |
| DOI | |
| 其它 | We report the electroluminescent characteristics of organic multilayer light‐emitting diodes (LEDs) with a benzophenone (BP) dispersed poly(methylmethacrylate) (PMMA) film as an emitting layer. The electroluminescence (EL) intensity of these LEDs increases with decreasing temperature from 273 to 100 K when they are operated at the same voltages or the same current densities. The EL spectrum of the LEDs, which peaks at around 450 nm, is identical to the phosphorescence spectrum of BP in PMMA. In addition, the EL decay time was determined as 46.8 μs at 100 K by applying a rectangular voltage pulse. These results indicate that the EL of the LED originates from the triplet excited states of BP. |
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丰知然
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