Modelling the short-circuit current of polymer bulk heterojunction solar cells

Geens, Wim; Martens, Tom; Poortmans, Jef; Aernouts, Tom; Manca, Jean; Lutsen, Laurence; Heremans, Paul; Borghs, Staf; Mertens, R.; Vanderzande, Dirk

doi:10.1016/j.tsf.2003.11.022

Cited by 52 publications

(40 citation statements)

References 8 publications

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“…[19,20]. In this model, we used a simple model which correctly demonstrates efficiency reduction by increasing the active layer thickness in which our simulation results are almost in good agreement with previous published works by several research groups about BHJ solar cell modeling and experimental data [11,[18][19][20][21].…”

Section: Illuminated Currentsupporting

confidence: 79%

A model for studying the performance of P3HT:PCBM organic bulk heterojunction solar cells

Movla

Rafi

2015

Optik

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Section: Illuminated Currentsupporting

confidence: 79%

A model for studying the performance of P3HT:PCBM organic bulk heterojunction solar cells

Movla

Rafi

2015

Optik

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“…The same discussion is argued by Geens et al [35] in the case of using bulk donor/acceptor heterojunctions based on a blend of poly(2-methoxy-5-(39,79-dimethyloctyloxy)-1,4-phenylene-vinylene) (OC1C10-PPV) and PCBM. According to the FF behavior in Figure 6, it is expected that the solar cell with 100% of PCBM will gain higher electron mobility, because the electron transport network formed by PCBM molecules will spread across the whole solar cell film.…”

Section: Device Performance Under White Lightsupporting

confidence: 56%

Investigation of PCBM Concentration on the Performance of Small Organic Solar Cell

Ismail

Soga

Jimbo

2012

ISRN Renewable Energy

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We have fabricated bulk heterojunction organic solar cells using coumarin 6 (C6) as a small organic dye, for light harvesting and electron donating, with fullerene derivative [6,6]-phenyl-C 61 butyric acid methyl ester (PCBM), acting as an electron acceptor, by spin-coating technique of the blend solutions. We have studied effect of PCBM concentration on photocurrent and performance parameters of the solar cells. We found that the optical absorption of the dye increased with increasing its concentration in the active layer blends. The higher concentrations of PCBM in active layer enhanced the photocurrent of the solar cells, as a result of improving charge carrier separation and electron transport in solar cell active layer. The improved charge carrier separation between C6, as a donor, and PCBM, as an acceptor, was indicated through the formation of bulk heterojunction by blending C6 with PCBM. The formation of C6:PCBM bulk heterojunction blend was confirmed through the symbatic behavior of the corresponding solar cell and, also, through the homogeneity and smoothing in the atomic force microscopy images of the C6:PCBM blend films. For the same reasons, the performance parameters of the C6:PCBM solar cell improved by modification of the PCBM concentration in the solar cell active layer.

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“…Films of P3HT and PCBM were separately fabricated via spin coating and had approximate thicknesses of 265 nm and 180 nm respectively, yielding at least a 1:0.8 weight ratio assuming the densities of P3HT and PCBM are 1.15 g/mL and 1.3 g/mL respectively. [ 15 ] The lowest reported value for the density of PCBM (ranging from 1.3 g/mL to 1.5 g/mL [ 16 ] ) was used in the estimation of the weight ratio to avoid overestimating the miscibility within this system. Neat P3HT and PCBM fi lms were allowed to age for 2 days at room temperature in an inert environment before bilayer fabrication so that each fi lm had an identical aging history.…”

Section: Fabrication and Characterization Of P3ht/pcbm Bilayersmentioning

confidence: 99%

Interdiffusion of PCBM and P3HT Reveals Miscibility in a Photovoltaically Active Blend

Treat

Brady

Smith

et al. 2010

Advanced Energy Materials

597

663

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Developing a better understanding of the evolution of morphology in plastic solar cells is the key to designing new materials and structures that achieve photoconversion efficiencies greater than 10%. In the most extensively characterized system, the poly(3‐hexyl thiophene) (P3HT):[6,6]‐phenyl‐C61‐butyric‐acid‐methyl‐ester (PCBM) bulk heterojunction, the origins and evolution of the blend morphology during processes such as thermal annealing are not well understood. In this work, we use a model system, a bilayer of P3HT and PCBM, to develop a more complete understanding of the miscibility and diffusion of PCBM within P3HT during thermal annealing. We find that PCBM aggregates and/or molecular species are miscible and mobile in disordered P3HT, without disrupting the ordered lamellar stacking of P3HT chains. The fast diffusion of PCBM into the amorphous regions of P3HT suggests the favorability of mixing in this system, opposing the belief that phase‐pure domains form in BHJs due to immiscibility of these two components.

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Modelling the short-circuit current of polymer bulk heterojunction solar cells

Cited by 52 publications

References 8 publications

A model for studying the performance of P3HT:PCBM organic bulk heterojunction solar cells

A model for studying the performance of P3HT:PCBM organic bulk heterojunction solar cells

Investigation of PCBM Concentration on the Performance of Small Organic Solar Cell

Interdiffusion of PCBM and P3HT Reveals Miscibility in a Photovoltaically Active Blend

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