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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/12216

Title: Isothermal crystallization of P3HT:PCBM blends studied by RHC
Authors: Demir, Fatma
Van den Brande, Niko
Van Mele, Bruno
BERTHO, Sabine
VANDERZANDE, Dirk
MANCA, Jean
Van Assche, Guy
Issue Date: 2011
Publisher: SPRINGER
Citation: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 105(3). p. 845-849
Abstract: Defining appropriate annealing temperatures and times is vitally important for increasing the efficiency of bulk heterojunction solar cells by favoring the crystallinity of the polymer-fullerene blend components. In order to better understand the annealing process, the isothermal crystallization of poly(3-hexyl thiophene) (P3HT) and [6,6]-phenyl C(61)-butyric acid methyl ester (PCBM) blend investigated by means of rapid heating cooling calorimetry (RHC). Isothermal crystallization experiments at temperatures in between the glass transition and melting, within the temperature range of 70-150 A degrees C, can successfully be performed since RHC permits cooling at a sufficiently high rate in order to prevent crystallization during cooling. Crystallization isotherms were determined from the subsequent melting behavior of the blend. They were measured for a wide set of annealing temperatures and times, and the evolution of the crystallization rate with temperature is compared for annealing from the glassy state and from the melt state.
Notes: Van Assche, G (reprint author),[Demir, F; Van den Brande, N; Van Mele, B; Van Assche, G] Vrije Univ Brussel, Dept Phys Chem & Polymer Sci, Fac Engn, B-1050 Brussels, Belgium [Bertho, S; Vanderzande, D; Manca, J] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium gvassche@vub.ac.be
URI: http://hdl.handle.net/1942/12216
DOI: 10.1007/s10973-011-1701-8
ISI #: 000294014000013
ISSN: 1388-6150
Category: A1
Type: Journal Contribution
Validation: ecoom, 2012
Appears in Collections: Research publications

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