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Stability comparison: A PCDTBT/PC71BM bulk-heterojunction versus a P3HT/PC71BM bulk-heterojunction
- Stability comparison: A PCDTBT/PC71BM bulk-heterojunction versus a P3HT/PC71BM bulk-heterojunction
- Wang, DH[Wang, Dong Hwan]; Kim, JK[Kim, Jung Kyu]; Seo, JH[Seo, Jung Hwa]; Park, OO[Park, O. Ok]; Park, JH[Park, Jong Hyeok]
- DGIST Authors
- Park, OO[Park, O. Ok]
- Issue Date
- Solar Energy Materials and Solar Cells, 101, 249-255
- Article Type
- Active Layer; Air Stability; Atomic Force Microscopies (AFM); Atomic Force Microscopy; Benzothiadiazoles; Bulk-Heterojunction; Bulk-Heterojunction (Bhj); Chemical Degradation; Conversion Efficiency; Degradation; Energy Dispersive X Ray Spectroscopy; Experimental Conditions; Heterojunctions; Long Term Stability; Methyl Esters; Morphological Change; Morphological Changes; Morphological Study; Morphology; P-Type; Poly(3-Hexylthiophene); Polycyclic Aromatic Hydrocarbons; Polymer Solar Cells (PSCs); Polymers; Power Conversion Efficiencies; Scanning Electron Microscopy; Scanning Electron Microscopy Image; Semicrystallines; Thermal Stability; Thermodynamic Stability; X Ray Photoelectron Spectroscopies (XPS); X Ray Photoelectron Spectroscopy; X Ray Spectroscopy
- In this study, the physical and chemical degradation behaviors of active layers based on semicrystalline p-type polymer (poly(3-hexylthiophene) (P3HT)) and [6,6]-phenyl C 71 butyric acid methyl-ester (PC 71BM) are compared with the corresponding behaviors of amorphous p-type polymer of poly[N-9″-hepta-decanyl-2,7-carbazole-alt-5,5-(4′, 7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT) and PC 71BM. A surface morphological study of the active layer (from Atomic force microscopy (AFM) and scanning electron microscopy (SEM) images) and a chemical analysis (from X-ray photoelectron spectroscopy (XPS) and Energy dispersive X-ray spectroscopy (EDS) results) help explain why PCDTBT/PC 71BM bulk heterojunction (BHJ) has a higher level of long-term stability under thermal and air stability experimental conditions than a P3HT/PC 71BM-based BHJ. The power conversion efficiency for a PCDTBT/PC 71BM BHJ cell and a P3HT/PC 71BM BHJ cell decreased by 11% and 21%, respectively, after a thermal stability test and by 68% and 78%, respectively, after a 300 h air stability test. © 2012 Elsevier B.V. All rights reserved.
- Elsevier B.V.
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- ETC1. Journal Articles
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