For one dimensional models you can use SCAPS. If you seek higher conventionality you can use SilVACO of TCAD. Naturally you can use SILVACO for one dimensional structure too but it is littel bit more complicated than SCAPS.
The SILVACO is the professional tool to calculate the photovoltaic parameters of organic solar cells, but you must even use the examples to be able to build exactly your correct program. I would suggest looking for some good examples in the help of silvaco. package,
in attached I am sending you the titles of some scientific contributions that may be useful to you:
Device simulation can aid in elucidating the relationship between material property and device performance. OSCs based on planar architecture have been successfully modeled using two dimensional device simulators. I suggest analyze OSCs by using two dimensional (2D) COMSOL Multiphysics. Attached file an exemple for that :
Simulation Science and Technology (SST) has relatively self-governed theory framework which includes the similarity theory of simulation model and research object, simulation modeling theory, simulation system theory and simulation application theory. The detailed research content was analyzed based on the following, the similarity theory of simula...
In this article it is shown that Laguerre partitions of the unit torus yield faithful global representations of the geometry of ceramic polycrytals at the microscopic level. On this basis, a simulation model has been developed and tested reproducing some of the main characteristics of polycrystal growth for the 2D case.