Influence and relationship of film morphology on Organic Solar Cells manufactured with different P3HT:PC[70]BM blend solutions

Author

Balderrama, V.S. ; Estrada, M. ; Formentin, P. ; Viterisi, A. ; Ferré-Borrull, J. ; Pallarés, J. ; Palomares, E. ; Marsal, L.F.

Author_Institution

Dept. d´´Eng. Electron., Electr. i Autom., Univ. Rovira i Virgili, Tarragona, Spain

fYear

2011

fDate

26-28 Oct. 2011

Firstpage

1

Lastpage

5

Abstract

In the present work, the morphology and performance of Bulk Heterojunction Organic Solar Cells (BHJ-OSC) manufactured with three different ratios of P3HT:PC_[70]BM (1:0.84, 1:1 and 1:1.21, wt%) were studied. These films were made with a mixture of solvents o-dichlorobenzene:chlorobenzene (DCB:CB) at a fixed ratio by volume of 6:4, v/v. The film morphology of the OSCs was characterized by atomic force microscopy (AFM) and transmission electron microscopy (TEM). The performance parameters of the OSC were extracted from current density-voltage characteristic (J-V) curves recorded in the dark and under illumination and correlated to the morphology of the active layer. We discuss observed variations in phase segregation regions due to changes in the P3HT:PC_[70]BM ratio.

Keywords

atomic force microscopy; polymer films; solar cells; transmission electron microscopy; AFM; BHJ-OSC; DCB:CB; J-V characteristic curve; P3HT:PC_[70]BM ratio; TEM; atomic force microscopy; bulk heterojunction organic solar cell; density-voltage characteristic curve; dichlorobenzene:chlorobenzene; film morphology; phase segregation region; transmission electron microscopy; Films; Heterojunctions; Morphology; Photovoltaic cells; Polymers; Solvents; Film morphology; Organic solar cells; Phase separation; Solubility; Solutions of blend;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering Computing Science and Automatic Control (CCE), 2011 8th International Conference on

Conference_Location

Merida City

Print_ISBN

978-1-4577-1011-7

Type

conf

DOI

10.1109/ICEEE.2011.6106594

Filename

6106594