Aesthetically pleasing conjugated polymer:fullerene blends for blue-green solar cells via roll-to-roll processing

ACS Applied Materials & Interfaces
Chad M AmbJohn R Reynolds

Abstract

The practical application of organic photovoltaic (OPV) cells requires high throughput printing techniques in order to attain cells with an area large enough to provide useful amounts of power. However, in the laboratory screening of new materials for OPVs, spin-coating is used almost exclusively as a thin-film deposition technique due its convenience. We report on the significant differences between the spin-coating of laboratory solar cells and slot-die coating of a blue-green colored, low bandgap polymer (PGREEN). This is one of the first demonstrations of slot-die-coated polymer solar cells OPVs not utilizing poly(3-hexylthiophene):(6,6)-phenyl-C(61)-butyric acid methyl ester (PCBM) blends as a light absorbing layer. Through synthetic optimization, we show that strict protocols are necessary to yield polymers which achieve consistent photovoltaic behavior. We fabricated spin-coated laboratory scale OPV devices with PGREEN: PCBM blends as active light absorbing layers, and compare performance to slot die-coated individual solar cells, and slot-die-coated solar modules consisting of many cells connected in series. We find that the optimum ratio of polymer to PCBM varies significantly when changing from spin-coating of thinner...Continue Reading

References

Aug 8, 2008·Nano Letters·Claudia N HothChristoph J Brabec
Feb 10, 2009·Journal of the American Chemical Society·Timothy T StecklerJohn R Reynolds
Mar 11, 2010·Advanced Materials·Markus C ScharberChristoph J Brabec
Apr 2, 2010·ACS Applied Materials & Interfaces·Jegadesan SubbiahFranky So
Jul 22, 2010·Nanoscale·Frederik C KrebsMikkel Jørgensen
Aug 19, 2010·Advanced Materials·Christoph J BrabecShawn P Williams
Aug 24, 2010·Accounts of Chemical Research·Pierre M BeaujugeJohn R Reynolds
Nov 9, 2010·Journal of the American Chemical Society·Kion NorrmanFrederik C Krebs

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Citations

Dec 19, 2013·ACS Applied Materials & Interfaces·Wenjuan YuShengping Ruan
May 9, 2014·ACS Applied Materials & Interfaces·Romain StalderKirk S Schanze
Dec 18, 2013·Nanotechnology·Andrey E RudenkoBarry C Thompson
Jun 13, 2018·ACS Applied Materials & Interfaces·Junyu YangLintao Hou

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