Abstract
We present an optoelectronic analytical model for bulk heterojunction organic solar cells. Incorporating optical transfer matrix theory in the electrical transport equations, we combine optical and electrical phenomena. This leads us to a single unified expression of current–voltage characteristic which considers the position and wavelength dependent carrier generation rate. Spatial distribution of the carrier generation rate is considered rigorously unlike previous analytical models. The model is capable of considering the optical propagation through the device structure as well as the optical phenomena such as reflections and interference effects. We verify the model with numerical results and published experimental data.
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