Studying the Effect of High Substrate Temperature on the Microstructure of Vacuum Evaporated TAPC: C60 Organic Solar Thin Films
| Autor: | Moritz Riede, Mohamed Hazem Abdellatif, Mohamed S. Abdel-Aal, Ghada Bassioni |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Organic solar cell microstructure Analytical chemistry Electron donor 02 engineering and technology 010402 general chemistry 01 natural sciences lcsh:Technology Polymer solar cell Article law.invention Vacuum evaporation chemistry.chemical_compound law Solar cell General Materials Science lcsh:Microscopy organic semiconductors lcsh:QC120-168.85 vacuum evaporation lcsh:QH201-278.5 lcsh:T Substrate (chemistry) organic solar cells 021001 nanoscience & nanotechnology Microstructure renewable energy 0104 chemical sciences X-ray diffraction Organic semiconductor chemistry lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Volume 14 Issue 7 Materials, Vol 14, Iss 1733, p 1733 (2021) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14071733 |
| Popis: | Organic solar cells (OSCs), also known as organic photovoltaics (OPVs), are an emerging solar cell technology composed of carbon-based, organic molecules, which convert energy from the sun into electricity. Key for their performance is the microstructure of the light-absorbing organic bulk heterojunction. To study this, organic solar films composed of both fullerene C60 as electron acceptor and different mole percentages of di-[4-(N,N-di-p-tolyl-amino)-phenyl]-cyclohexane (TAPC) as electron donor were evaporated in vacuum in different mixing ratios (5, 50 and 95 mol%) on an ITO-coated glass substrate held at room temperature and at 110 °C. The microstructure of the C60: TAPC heterojunction was studied by grazing incidence wide angle X-ray scattering to understand the effect of substrate heating. By increasing the substrate temperature from ambient to 110 °C, it was found that no significant change was observed in the crystal size for the C60: TAPC concentrations investigated in this study. In addition to the variation done in the substrate temperature, the variation of the mole percent of the donor (TAPC) was studied to conclude the effect of both the substrate temperature and the donor concentration on the microstructure of the OSC films. Bragg peaks were attributed to C60 in the pure C60 sample and in the blend with low donor mole percentage (5%), but the C60 peaks became nondiscernible when the donor mole percentage was increased to 50% and above, showing that TAPC interrupted the formation of C60 crystals. |
| Databáze: | OpenAIRE |
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