Stability comparison: A PCDTBT/PC71BM bulk-heterojunction versus a P3HT/PC71BM bulk-heterojunction
- Title
- Stability comparison: A PCDTBT/PC71BM bulk-heterojunction versus a P3HT/PC71BM bulk-heterojunction
- Author(s)
- 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]
- Issued Date
- 2012-06
- Type
- Article
- Article Type
- Article
- Subject
- 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
- ISSN
- 0927-0248
- Abstract
- 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.
- Publisher
- Elsevier B.V.
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- Appears in Collections:
- ETC 1. Journal Articles
- Department of Energy Science and Engineering ETC 1. Journal Articles
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