Generation, Absorption and Photoconductivity in 2D Structures of Perovskite with Nanodisc Quantum Dots
S. Wolskia, V.K. Dugaeva, M. Inglota, P. Kwaśnickib
aDepartment of Physics and Medical Engineering, Rzeszów University of Technology, al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
bResearch and Development Centre for Photovoltaics, ML System S.A., Zaczernie 190G, 36-062 Zaczernie, Poland
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An array of semiconductor quantum dots introduced into photoelectric materials is currently an effective tool to increase the efficiency of photoelectric devices and photovoltaic cells. This is related to additional energy levels which expand the range of absorption frequencies towards the infrared. We consider the model with a semiconductor quantum dot in form of nanodisc surrounded by another semiconductor material. The results of calculation of the generation of non-equilibrium carriers in the conduction and valence bands are presented. The calculations account for discrete levels of the quantum dots embedded into perovskite material. Using the calculated generation and relaxation rates, the photocurrent is also determined.

DOI:10.12693/APhysPolA.135.1287
topics: photovoltaic effects, quantum dots, perovskite solar cells