A simulation study of MAPbI₃ perovskite solar cells shows that quasi-sinusoidal interface texturing outperforms pyramidal and bumpy morphologies by achieving the best balance between light absorption and charge transport.
Researchers in Iran have investigated the effect of random interface texturing on the performance of methylammonium lead iodide (MAPbI₃) perovskite solar cells. Using a coupled two-dimensional finite-element optoelectronic simulation framework, they systematically analyzed how introducing nanostructured textures across all layers of the device influences its behavior.
In particular, their model captures the interplay between optical effects—such as enhanced light trapping and absorption—and electronic processes including charge transport and recombination, providing insight into how multi-layer texturing can be used to optimize overall device efficiency.
“While many studies apply random or periodic textures, we systematically compare three different random morphologies and show that device performance is not simply governed by increased roughness or surface area,” corresponding author Maryam Zoghi told pv magazine. “Instead, the key is the trade-off between enhanced useful absorption in the perovskite layer and transport penalties caused by morphology-dependent tortuosity.”
