Influence of the Molecular Weight of Poly(3-hexylthiophene) on the Performance of Bulk Heterojunction Solar Cells

2005 ◽  
Vol 17 (8) ◽  
pp. 2175-2180 ◽  
Author(s):  
Pavel Schilinsky ◽  
Udom Asawapirom ◽  
Ullrich Scherf ◽  
Markus Biele ◽  
Christoph J. Brabec
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

Optimisation of diketopyrrolopyrrole:fullerene solar cell performance through control of polymer molecular weight and thermal annealing

2014 ◽  
Vol 2 (45) ◽  
pp. 19282-19289 ◽  
Author(s):  
Zhenggang Huang ◽  
Elisa Collado Fregoso ◽  
Stoichko Dimitrov ◽  
Pabitra Shakya Tuladhar ◽  
Ying Woan Soon ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Solar Cell ◽  
Thermal Annealing ◽  
Bulk Heterojunction ◽  
Cell Performance ◽  
Polymer Molecular Weight ◽  
Solar Cell Performance ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

The performance of bulk heterojunction solar cells based on a novel donor polymer DPP-TT-T was optimised by tuning molecular weight and thermal annealing.

Controlling Solution-Phase Polymer Aggregation with Molecular Weight and Solvent Additives to Optimize Polymer-Fullerene Bulk Heterojunction Solar Cells

2014 ◽  
Vol 4 (9) ◽  
pp. 1301733 ◽  
Author(s):  
Jonathan A. Bartelt ◽  
Jessica D. Douglas ◽  
William R. Mateker ◽  
Abdulrahman El Labban ◽  
Christopher J. Tassone ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Phase ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

Effect of Molecular Weight on the Photovoltaic Performance of a Low band gap Copolymer blended with ICBA

2013 ◽  
Vol 1537 ◽  
Author(s):  
Olzhas Ibraikulov ◽  
Rony Bechara ◽  
Patrick Lévêque ◽  
Nicolas Leclerc ◽  
Galymzhan Koishiyev ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Open Circuit ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Molecular Weights ◽  
Post Deposition

ABSTRACTAn increase in molecular weight of the polymer generally impedes solubility in common solvents and may influence the polymer optoelectronic properties as well. Indeed, higher molecular weights are expected to increase charge carrier mobilities and therefore give rise to better photovoltaic performances of bulk heterojunction solar cells. In this work, we use copolymers based on 2,1,3-benzothiadiazole, thiophene and thieno[3,2-b]thiophene units of various fractions differing in molecular weights almost by a factor of 4 with a fullerene based acceptor material Indene-C60 Bisadduct (IC[60]BA) to elaborate bulk heterojunction solar cells. We investigate the influence of post-deposition annealing temperatures and polymer:fullerene ratios on the final cell performances. We use IC[60]BA as an acceptor to enhance the open circuit voltage due to its high lying LUMO level [1]. Additionally, charge carrier mobilities were probed using bottom contact organic field-effect transistors. As expected, higher molecular weights (as long as homogeneity was maintained) resulted in an increase of the hole field-effect mobility (up to 7x10-3 cm2V-1s-1). Consequently, the power conversion efficiencies of bulk heterojunction solar cells could be improved by increasing the copolymer molecular weight. A power conversion efficiency of 2.4% with an open circuit voltage of 0.82V was reached in a standard device configuration with aluminum as a cathode after post-deposition thermal annealing.

Non-geminate Recombination Limits Fill Factor in Polymer:ITIC Bulk Heterojunction Solar Cells

2019 ◽  
Author(s):  
Jafar Khan ◽  
Yuliar Firdaus ◽  
Federico Cruciani ◽  
Shengjian Liu ◽  
Denis Andrienko ◽  
...  
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Bulk Heterojunction ◽  
Geminate Recombination ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

Soluble porphyrin donors for small molecule bulk heterojunction solar cells

2012 ◽  
Vol 22 (36) ◽  
pp. 19258 ◽  
Author(s):  
Junichi Hatano ◽  
Naoki Obata ◽  
Shigeru Yamaguchi ◽  
Takeshi Yasuda ◽  
Yutaka Matsuo
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells
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