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Investigation of Luminance Degradation in Organic Light-Emitting Diodes by Impedance Spectroscopy
- Issue Date
- Jul-2018
- Publisher
- Institute of Electrical and Electronics Engineers
- Keywords
- Organic light-emitting diodes; impedance spectroscopy; degradation
- Citation
- IEEE Photonics Technology Letters, v.30, no.13, pp.1183 - 1185
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Photonics Technology Letters
- Volume
- 30
- Number
- 13
- Start Page
- 1183
- End Page
- 1185
- ISSN
- 1041-1135
- Abstract
- We characterize the degradation of organic light-emitting diodes (OLEDs) by employing the impedance spectroscopy. An integrated OLED is compared with the hole only device (HOD) and the electron-only device to understand the degradation mechanism under voltage stress for 12 h in ambient conditions. Changes in impedance observed from the Cole-Cole plot of the HOD reveal that the degradation mechanism of the OLED is attributed to unbalanced recombination resulting from the deterioration of hole injection into the emissive layer.
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Related Researcher
- Shin, Dong Soo
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)