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| Content Provider | IET Digital Library |
|---|---|
| Author | Negi, Shubham Mittal, Poornima Kumar, Brijesh |
| Abstract | This research study investigates electrical performance of the multilayered organic light-emitting diode (OLED) with a focus on the role of charge injection, transport and emission layers. Device parameters; luminescence and current density are extracted using Silvaco ATLAS numerical device simulator and validated through the fabricated experimental results with a minor deviation of 3%. Furthermore, a mathematical model is applied to extract other device parameters such as electric field, charge carrier mobility, concentration and current density. Additionally, the multilayered device architecture is critically analysed through cut line methodology to better comprehend the internal device physics in terms of hole-electron mobility, concentration and their recombination. Subsequently, the performance parameters extracted using analytical model are compared with the results of internal analysis and a close match is observed. These results prove the Poole-Frenkel mobility-dependent behaviour in the OLEDs that varies following electric field. Analyses also highlight high electron and hole concentrations in the vicinity of the emission layer as a reason of high luminescence in the multilayered OLED, directly following the Langevin's theory of recombination in organic semiconductors. These analyses highlight the impact of different layers in the OLEDs and thus open up new horizons to further performance improvement in these devices. |
| Starting Page | 1255 |
| Ending Page | 1261 |
| Page Count | 7 |
| ISSN | 1751858X |
| Volume Number | 13 |
| e-ISSN | 17518598 |
| Issue Number | Issue 8, Nov (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-cds/13/8 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-cds.2019.0164 |
| Journal | IET Circuits, Devices & Systems |
| Publisher Date | 2019-09-10 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Analytical Model Carrier Concentration Carrier Current Density Carrier Density Carrier Mobility Charge Carrier Mobility Charge Injection Current Density Cut-line Methodology Design And Testing Device Parameter Electric Field Electrical Performance Electron Mobility Electron-hole Recombination Emission Layer Equivalent Circuit Hole Concentrations Hole Mobility Hole–electron Mobility Internal Analysis Internal Device Physics Langevin Theory Leakage Current Light Emitting Diode Luminescence Mathematical Model MultiLayer Multilayered Device Architecture Multilayered OLED Multilayered Organic Light-emitting Diode Numerical Analysis Numerical Method Organic Light Emitting Diode Organic SemiConductor Parameter Extraction Performance Improvement Performance Parameter Poole-Frenkel Effect Poole–Frenkel Mobility-dependent Behaviour Semiconductor Device Model Semiconductor Device Modelling Silvaco ATLAS Numerical Device Simulator Transport Layer |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Electrical and Electronic Engineering |
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