Organic photovoltaic initial stage degradation analysis using impedance spectroscopy
| Autor: | Edna Low, Zhi Ming Kam, Nan Zhang, Rong Wang, Lin Ke, Xizu Wang, Jie Zhang, Bin Liu |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Organic solar cell Spectrometer business.industry Mechanical Engineering Metals and Alloys Analytical chemistry Condensed Matter Physics Capacitance Electronic Optical and Magnetic Materials Dielectric spectroscopy PEDOT:PSS Mechanics of Materials Materials Chemistry Optoelectronics Degradation (geology) business Layer (electronics) Electrical impedance |
| Zdroj: | Synthetic Metals. 202:63-67 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/j.synthmet.2015.01.029 |
| Popis: | Shelf lifetime of organic solar cells based on P3HT:PCBM has been investigated using high magnitude and phase resolution impedance spectrometer. From the traditional current–voltage degradation curve, several stages of changes causing the device performance degradation are discussed. Degradation process of the devices has been monitored using impedance spectrometer under light, and dynamic parameters changes have been derived by model fitting, which are unable to provide information regarding the different stages of device changes though. However, layer analysis tested using impedance spectrometer in dark, provided exact information of device’s layers and interfaces changes during degradation process. Higher capacitance at PEDOT-ITO interface and higher resistance at PEDOT-P3HT interface, and PEDOT bulk layer’s performance fluctuations contributed to the beginning stages of device degradation. The degradation of P3HT:PCBM layer indicates the starting of the final device irreversible degradation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect