#Qucs error jacobian singular rectangular voltage

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Qucs error jacobian singular rectangular voltage

OSCs with interface geometries characterized by an arbitrarily complex (OSCs) and propose a two-scale (micro- and macro-scale) model of heterojunction In this article, we continue our mathematical study of organic solar cells Impact of the model parameters on photocurrent transient times. Thorough validation of the computational model by extensively investigating the Then, we use exponentiallyįitted finite elements for the spatial discretization, and we carry out a Method with inexact evaluation of the Jacobian. Sequence of differential subproblems is linearized using the Newton-Raphson Semi-discretization using an implicit adaptive method, and the resulting For the numerical treatment of the problem, we carry out a temporal Propose a suitable reformulation of the model that allows us to prove theĮxistence of a solution in both stationary and transient conditions and toīetter highlight the role of exciton dynamics in determining the device turn-on The mathematical model for OSCs consists of a system of nonlinearĭiffusion-reaction partial differential equations (PDEs) with electrostaticĬonvection, coupled to a kinetic ordinary differential equation (ODE). Problems arising from modeling photocurrent transients in Organic-polymer SolarĬells (OSCs). This article is an attempt to provide a self consistent picture, includingĮxistence analysis and numerical solution algorithms, of the mathematical