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Blend P3HT/PCBM

Structural instability due to phase segregation in donor-acceptor blends over time is a function of materials and temperature. At moderate temperatures of 50-80 C, the problem is more severe in MDMO-PPV PCBM than P3HT PCBM blend films. This... [Pg.488]

Fig. 34 TEM images in combination with electron diffraction of a untreated and b thermally annealed P3HT PCBM blend films. (Reprinted with permission from [179], 2005, American Chemical Society)... Fig. 34 TEM images in combination with electron diffraction of a untreated and b thermally annealed P3HT PCBM blend films. (Reprinted with permission from [179], 2005, American Chemical Society)...
Fig. 35 Diffraction diagram (grazing incidence) of untreated and annealed P3HT PCBM blend films deposited on glass/ITO/PEDOT PSS substrates left). The corresponding a-axis orientation of the crystals is shown on the right. (Reproduced with permission from [181], 2005, Wiley-VCH)... Fig. 35 Diffraction diagram (grazing incidence) of untreated and annealed P3HT PCBM blend films deposited on glass/ITO/PEDOT PSS substrates left). The corresponding a-axis orientation of the crystals is shown on the right. (Reproduced with permission from [181], 2005, Wiley-VCH)...
Fig. 36 XRD crystallinity (a) and absorption coefficient (b) of P3HT PCBM blends spin cast from either chlorobenzene (left) or chloroform (right) at various annealing temperatures. Interestingly, the increase in crystallinity is accompanied by a quantitatively correlated increase in optical absorption in the 2.0-2.5 eV region. (Reprinted from [183], 2006, with permission from Elsevier)... Fig. 36 XRD crystallinity (a) and absorption coefficient (b) of P3HT PCBM blends spin cast from either chlorobenzene (left) or chloroform (right) at various annealing temperatures. Interestingly, the increase in crystallinity is accompanied by a quantitatively correlated increase in optical absorption in the 2.0-2.5 eV region. (Reprinted from [183], 2006, with permission from Elsevier)...
Fig. 37 AFM images of P3HT-PCBM (a-c) and P3HT-PCBG (d-f) blend films spin cast on glass. The images show unheated films (a and d), films annealed for 4 min at 140 °C (b and e), and films annealed for 1 h at 140 °C (c and f) [186]. (Reproduced by permission of The Royal Society of Chemistry)... Fig. 37 AFM images of P3HT-PCBM (a-c) and P3HT-PCBG (d-f) blend films spin cast on glass. The images show unheated films (a and d), films annealed for 4 min at 140 °C (b and e), and films annealed for 1 h at 140 °C (c and f) [186]. (Reproduced by permission of The Royal Society of Chemistry)...
Fig. 40 Influence of regioregularity of P3HT in blends with PCBM on /-V characteristics and EQE. Full lines represent devices before annealing, broken lines after thermal annealing at 140 °C for 2 h. It is evident that larger regioregularity black, 95.2% red, 93% and blue 90.7%) leads to larger photovoltaic performances. (Reprinted by permission from Macmillan Publishers Ltd Nature Materials [190], 2006)... Fig. 40 Influence of regioregularity of P3HT in blends with PCBM on /-V characteristics and EQE. Full lines represent devices before annealing, broken lines after thermal annealing at 140 °C for 2 h. It is evident that larger regioregularity black, 95.2% red, 93% and blue 90.7%) leads to larger photovoltaic performances. (Reprinted by permission from Macmillan Publishers Ltd Nature Materials [190], 2006)...
To improve the limit-of-detection, we replaced the 16 mm vacuum deposited CuPc/Cgg bilayer devices with 1 mm solution-processed polymer devices based on 1 1 blends by weight of poly(3-hexylthiophene) [P3HT] and [6, 6]-phenyl-C61-butyric acid-methylester [PCBM] - a soluble derivative of Ceo- The P3HT PCBM devices fabricated in our laboratory typically have very low short-circuit dark current densities of <10 mA cm , and are consequently a good choice for high sensitivity detection [21]. The... [Pg.120]

Significant amount of research has been dedicated to two material systems MDMO-PPV PCBM (MDMO-PPV poly(2-methoxy-5-(3, 7 -dimethyl-octyloxy)-l,4-phenylenevinylene)) and RR-P3HT PCBM, which represent the state-of-the-art polymer solar cell technology. Because there are excellent review papers on the MDMO-PPV PCBM system in the literature, in this section we will only focus on the recent improvements in RR-P3HT PCBM system, especially the approaches to optimize the active blend layer for enhancing device efficiency. [Pg.327]

Absorption of RR-P3HT solution and RR-P3HT PCBM blend films with different weight ratios of PCBM. (Reused from Shrotriya, V. et al., Chem. Phys. Lett., 411,138,2005. With permission.)... [Pg.328]

Figure 13.4 Charge generation in PCBMipolyhtiophene solar cells. Charge-transfer state generation, separation, and recombination rates for P3HT PCBM are shown. (Reprinted with permission from Journal of the American Chemical Society, Charge Carrier Formation in Polythiophene/ Fullerene Blend Films Studied by Transient Absorption Spectroscopy by H. Ohkita, S. Cook, Y. Astuti etal., 130, 10,3030-3042. Copyright (2008) American Chemical Society)... Figure 13.4 Charge generation in PCBMipolyhtiophene solar cells. Charge-transfer state generation, separation, and recombination rates for P3HT PCBM are shown. (Reprinted with permission from Journal of the American Chemical Society, Charge Carrier Formation in Polythiophene/ Fullerene Blend Films Studied by Transient Absorption Spectroscopy by H. Ohkita, S. Cook, Y. Astuti etal., 130, 10,3030-3042. Copyright (2008) American Chemical Society)...
T.M. Clarke, A.M. Ballantyne, J. Nelson, D.D.C. Bradley, and J.R. Durrant, Free energy control of charge photogeneration in polythiophene/fullerene solar cells The influence of thermal annealing on P3HT/PCBM blends, Adv. Fund Mater., 18, 4029 035 (2008). [Pg.560]

Germack, D.S., Checco, A., Ocko, B.M. Directed assembly of P3HT PCBM blend films using a chemical template with sub-300 nm features. ACS Nano 7, 1990-1999 (2013)... [Pg.161]

J. Zhao, A. Swinnen, Van G. Assche, J. Mcuicci, D. Vcuiderzande, B. V. Mele, Phase Diagram of P3HT/PCBM Blends cuid Its Implication for the Stability of Morphology. J. Phys. Chem. B 2009,113,1587-1591. [Pg.108]

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See also in sourсe #XX -- [ Pg.34 ]



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