Optically pumped lasing of an electrically active hybrid OLED-microcavity
| Autor: | Markas Sudzius, H. Fröb, Robert Brückner, Karl Leo, Stefan Meister |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Physics and Astronomy (miscellaneous) business.industry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Semiconductor laser theory Optical pumping Organic semiconductor 0103 physical sciences Electrode OLED Optoelectronics 0210 nano-technology business Current density Lasing threshold Electrical conductor |
| Zdroj: | Applied Physics Letters. 112:113301 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.5016244 |
| Popis: | Highly conductive electrodes are a prerequisite for electrically pumped organic lasers. We investigate the influence of very thin metal contacts in an electrically active organic microcavity. We test different deposition techniques and seed layers to decrease the thickness of the metal layers and reduce possibly harmful absorption. For such very thin contacts, the spectral position of the modes is modeled by simulated modes using the transfer-matrix-algorithm. The input-output characteristics of the device without, with bottom, with top, and with both metal layer(s) are recorded. These measurements allow us to understand and improve the impact on the functionality. With these results and the help of a theoretical approximation, we determine the minimal current density needed to reach the lasing threshold for electrical pumping in this sample structure. |
| Databáze: | OpenAIRE |
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