Embedding a Diketopyrrolopyrrole-Based Cross-linking Interfacial Layer Enhances the Performance of Organic Photovoltaics
| Autor: | Chung-Lin Chung, Chih-Ping Chen, Ya-Juan Peng, Ying-Chieh Chao, Ru-Jong Jeng, Hsiang-Lin Hsu, Yu-Hua Liao |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science Organic solar cell Electron donor 02 engineering and technology Electron acceptor 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electron spectroscopy 0104 chemical sciences Active layer Indium tin oxide chemistry.chemical_compound chemistry Chemical engineering General Materials Science 0210 nano-technology Layer (electronics) Ultraviolet photoelectron spectroscopy |
| Zdroj: | ACS applied materialsinterfaces. 10(10) |
| ISSN: | 1944-8252 |
| Popis: | In this study, we prepared DPPBTDA, a diketopyrrolopyrrole-based small molecule presenting a terminal cross-linkable azido group, as a cathode modifying layer for organic photovoltaics (OPVs) having the inverted device structure glass/indium tin oxide/zinc oxide (ZnO) with or without the interfacial layer (IFL)/active layer/MoO3/Ag. The active layer comprising a blend of poly[4,8-bis(5-(2-ethylhexyl)thien-2-yl)benzo[1,2-b;4,5-b′]dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene)-2-carboxylate-2,6-diyl] (PTB7-Th) as the electron donor and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the electron acceptor. Atomic force microscopy, space-charge-limited current mobility, surface energy, electron spectroscopy for chemical analysis depth profile, ultraviolet photoelectron spectroscopy analysis, and OPV performance data revealed that the surface status of ZnO changed after inserting the DPPBTDA/PCBM hybrid IFL and induced an optimized blend morphology, having a preferred gradien... |
| Databáze: | OpenAIRE |
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