Effect of molecular aggregation by thermal treatment on photovoltaic properties of MEH-PPV: Fullerene-based solar cells
| Autor: | Arto Maaninen, Hui Jin, Feng Teng, Pälvi Kopola, Markus Tuomikoski, Yanbing Hou |
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| Rok vydání: | 2009 |
| Předmět: |
thermal annealing
Photoluminescence Materials science Fullerene molecular aggregation polymer Analytical chemistry 02 engineering and technology Thermal treatment 010402 general chemistry 7. Clean energy 01 natural sciences Polymer solar cell law.invention chemistry.chemical_compound Buckminsterfullerene law Solar cell SDG 7 - Affordable and Clean Energy Crystallization Renewable Energy Sustainability and the Environment Heterojunction 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry 0210 nano-technology Photovoltaic |
| Zdroj: | Solar Energy Materials and Solar Cells Jin, H, Hou, Y, Teng, F, Kopola, P, Tuomikoski, M & Maaninen, A 2009, ' Effect of molecular aggregation by thermal treatment on photovoltaic properties of MEH-PPV : Fullerene-based solar cells ', Solar Energy Materials and Solar Cells, vol. 93, no. 2, pp. 289-294 . https://doi.org/10.1016/j.solmat.2008.10.025 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2008.10.025 |
| Popis: | The effect of a thermal annealing treatment at various temperatures on the performance of bulk heterojunction photovoltaic cells based oil poly[2-methoxy-5-(2'-ethyl-hexyloxy)-p-phenylene vinylene] (MEH-PPV) and buckminsterfullerene (C(60)) composites was investigated. With the increase in temperature, three stages were observed: from 60 to 120 degrees C, the photovoltaic performance of the composite devices became better with the rising temperature; from 120 to 180 degrees C, the photovoltaic performance decreased to a minimum: but, at about 200 degrees C, a sharp rise occurred, followed by a gradual decline. The obvious red-shift of the photoluminescence (PL) spectra and the new PL peak and shoulder at about 620 and 660 nm, respectively, indicated the formation of molecular aggregation and the lengthened and the ordered conjugated segments. It was suggested that the crystallization Of C(60) after thermal annealing at 200 degrees C, which matched the nano-sized ordered domains of MEH-PPV led to a sharp enhancement in photovoltaic performance. (C) 2008 Elsevier B.V. All rights reserved |
| Databáze: | OpenAIRE |
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