期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 93, 期 8, 页码 1263-1267出版社
ELSEVIER
DOI: 10.1016/j.solmat.2009.01.019
关键词
Crystallinity; Morphology; Phase separation; Absorption; Organic solar cells
资金
- National Research Laboratory Program of the Korea Science & Engineering Foundation [ROA-2006-000-102740]
- National Research Foundation of Korea [핵06A3702, 2006-0052315] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Focused on phase separation and morphologies of poly(3-hexylthiophene):[6,6]-phenyl C-61 butyric acid methyl ester (P3HT:PCBM) active layers, we studied the effect of preparation conditions of the active layer on photovoltaic performance by changing concentration of P3HT:PCBM in the solvent. The performances of the cells varied depending on concentration of P3HT:PCBM (1:1 ratio by weight) in solvent even with the same thickness. The P3HT:PCBM active layer is prepared in cell structure of ITO/PEDOT/P3HT:PCBM/Al by changing spin-coating speed with different concentrations (1, 2 and 3 wt%) in chlorobenzene. Here, it was found that both the P3HT:PCBM concentrations and spin-coating conditions affected the crystalline structure formation, interchain interaction, morphology and phase separation during drying process of solvent and subsequent annealing. (C) 2009 Elsevier B.V. All rights reserved.
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