Transport Properties of La_(0.7)Sr_(0.3)MnO_3/ NSTO and La_(0.7)Sr_(0.3)MnO_3/ZnO Perovskite Solar Cells

摘要

A comprehensive numerical analysis for a Lead- free perovskite solar cell has been carried out using device simulation software. Enumerated study of two types of configurations La_(0.7)Sr_(0.3)MnO_3/ZnO (LSMO/ZnO) and La_(0.7)Sr_(0.3)MnO_3/ Nb-SrTiO_3 (LSMO/NSTO) are simulated which gives power conversion efficiency (PCE) of 6.78 and 0.47% after optimizing different parameters using SCAPS-1D numerical simulation. Bandgap analysis of LSMO/NSTO shows 35 and 65% discontinuity in the conduction band and valence band, which directly affect in the collection of charge carriers. While LSMO/ZnO configuration has continuity in the energy bands so large number of carriers collected as compared to NSTO buffer layer and it also leads to higher PCE. Buffer layer thickness optimization is also carried out.