Enhancing Efficiency in MoTe2-Based Solar Cells: The Impact of Sb2S3
Hole Transport Layer and Thickness Optimization
Abstract
In this study, SCAPS-1D simulator was used to investigate the
performance of a solar cell structure based on Molybdenum Telluride
(MoTe2) with Sb2S3 (Antimony Sulfide) Hole Transport Layer (HTL). The
motivation behind choosing MoTe2 as an absorber layer for its higher
optical absorption efficiency, cost-effectiveness, reliable and stable
operation. The comparative study of this introduced
(Al/FTO/CdS/MoTe2/Sb2S3/Pt) and baseline solar cell
(Al/FTO/CdS/MoTe2/Pt) has been implemented. Various photovoltaic
parameters like open-circuit voltage, short-circuit current, fill
factor, and efficiency have been investigated varying absorber and HTL
thickness, doping density, rare surface recombination velocity, defect
density, series as well as shunt resistance and temperature. The
proposed solar cell performance of η, Voc, Jsc, and FF was found to be
40.33%, 1.13 V, 40.78 mA/cm2, 87.63% optimizing absorber thickness
value of 0.5 μm and doping concentration value of cm-3. The determined
values of performance parameters Voc, Jsc, FF, and η are 0.95 V, 38.15
mA/cm2, 81.09% and 29.35%, respectively for baseline solar cell. The
implantation of Sb2S3 layer contributes to improve the performances by
diminishing carrier recombination losses. The present research results
indicate the feasible way for obtaining a lower-cost, and
higher-efficiency MoTe2-based SC with Sb2S3 HTL layer.