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Proceedings Paper

Solvent effect on the morphology of P3HT/PCBM films
Author(s): Yu Xie; Pavel Dutta; Dorin Cengher; Venkat Bommisetty; Jing Li; David Galipeau; Qiquan Qiao
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Paper Abstract

This work reports the study of solvent effects on the morphology for P3HT/PCBM films using chlorobenzene, 1, 2-dichlorobenzene and 1, 3-dichlorobenzene. Although extensive research has been focused on investigating devices using chlorobenzene and 1, 2-dichlorobenzene and it was found that 1, 2-dichlorobenzene led to an improved device performance, little work has been conducted in the morphology by comparing films fabricated via chlorobenzene, 1, 2-dichlorobenzene and 1, 3-dichlorobenzene. Atomic force microscopy (AFM) was performed to study the film morphology using chlorobenzene, 1, 2-dichlorobenzene and 1, 3-dichlorobenzene as solvents. Initial studies showed that the size of nanocrystallites in 1, 2-dichlorobenzene based films is smaller than nanoclusters in the other two films. Kelvin probe force microscopy (KFM) images, which were used to figure out the electron transport pathway, together with AFM images, showed the solvent effect on the morphology of these films. In addition, obvious red shifts were observed in the UV-Vis absorption spectra for the P3HT/PCBM blend from 1, 3-dichlorobenzene and 1, 2-dichlorobenzene compared to the one from chlorobenzene.

Paper Details

Date Published: 27 August 2009
PDF: 8 pages
Proc. SPIE 7416, Organic Photovoltaics X, 74161Q (27 August 2009); doi: 10.1117/12.826490
Show Author Affiliations
Yu Xie, South Dakota State Univ. (United States)
Pavel Dutta, South Dakota State Univ. (United States)
Dorin Cengher, South Dakota State Univ. (United States)
Venkat Bommisetty, South Dakota State Univ. (United States)
Jing Li, South Dakota State Univ. (United States)
David Galipeau, South Dakota State Univ. (United States)
Qiquan Qiao, South Dakota State Univ. (United States)


Published in SPIE Proceedings Vol. 7416:
Organic Photovoltaics X
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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