Dynamic Monte Carlo simulation for highly efficient polymer blend photovoltaics

L Y Meng, Y Shang, Q K Li, Y F Li, X W Zhan, Z G Shuai, R G E Kimber, A B Walker

Research output: Contribution to journalArticle

107 Citations (Scopus)

Abstract

We developed a model system for blend polymers with electron-donating and -accepting compounds. It is found that the optimal energy conversion efficiency call be achieved when the feature size is around 10 nm. The first reaction method is used to describe the key processes (e.g., the generation, the diffusion, the dissociation at the interface for the excitons, the drift, the injection from the electrodes, and the collection by the electrodes for the charge carries) in the organic solar cell by the dynamic Monte Carlo Simulation. Our simulations indicate that a 5% power conversion efficiency (PCE) is reachable with an optimum combination of charge mobility and morphology. The parameters used in this model Study correspond to a blend of novel polymers (bis(thienylenevinylene)-substituted polythiophene and poly(perylene diimide-alt-dithienothiophene)), which features a broad absorption and a high mobility. The I-V curves are well-reproduced by our simulations, and the PCE For the polymer blend can reach up to 2.2%, which is higher than the experimental value (> 1%), one of the best available experimental results up to now for the all-polymer solar cells. In addition, the dependency of PCE on the charge mobility and the material structure are also investigated.
LanguageEnglish
Pages36-41
Number of pages6
JournalJournal of Physical Chemistry B
Volume114
Issue number1
DOIs
StatusPublished - 14 Jan 2010

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Polymer blends
Conversion efficiency
Electrodes
Polymers
Energy conversion
Excitons
Monte Carlo simulation
Electrons

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Dynamic Monte Carlo simulation for highly efficient polymer blend photovoltaics. / Meng, L Y; Shang, Y; Li, Q K; Li, Y F; Zhan, X W; Shuai, Z G; Kimber, R G E; Walker, A B.

In: Journal of Physical Chemistry B, Vol. 114, No. 1, 14.01.2010, p. 36-41.

Research output: Contribution to journalArticle

Meng, LY, Shang, Y, Li, QK, Li, YF, Zhan, XW, Shuai, ZG, Kimber, RGE & Walker, AB 2010, 'Dynamic Monte Carlo simulation for highly efficient polymer blend photovoltaics', Journal of Physical Chemistry B, vol. 114, no. 1, pp. 36-41. https://doi.org/10.1021/jp907167u
Meng, L Y ; Shang, Y ; Li, Q K ; Li, Y F ; Zhan, X W ; Shuai, Z G ; Kimber, R G E ; Walker, A B. / Dynamic Monte Carlo simulation for highly efficient polymer blend photovoltaics. In: Journal of Physical Chemistry B. 2010 ; Vol. 114, No. 1. pp. 36-41.
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