title: An improved dynamic Monte Carlo model coupled with Poisson equation to simulate the performance of organic photovoltaic devices.
abstract: We describe a new dynamic Monte Carlo model to simulate the operation of a polymer-blend solar cell; this model provides major improvements with respect to the one we developed earlier [J. Phys. Chem. B 114, 36 (2010)] by incorporating the Poisson equation and a charge thermoactivation mechanism. The advantage of the present approach is its capacity to deal with a nonuniform electrostatic potential that dynamically depends on the charge distribution. In this way, the unbalance in electron and hole mobilities and the space-charge induced potential distribution can be treated explicitly. Simulations reproduce well the experimental I-V curve in the dark and the open-circuit voltage under illumination of a polymer-blend solar cell. The dependence of the photovoltaic performance on the difference in electron and hole mobilities is discussed.
authors: Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, China.
authors: Lingyi
authors: L
authors: Meng
authors: Dong
authors: D
authors: Wang
authors: Qikai
authors: Q
authors: Li
authors: Yuanping
authors: Y
authors: Yi
authors: Jean-Luc
authors: JL
authors: Brédas
authors: Zhigang
authors: Z
authors: Shuai