Numerical Analysis of a CZTS Solar Cell with MoS2 as a Buffer Layer and Graphene as a Transparent Conducting Oxide Layer for Enhanced Cell Performance

Abstract

Copper zinc tin sulfide (CZTS) can be considered an important absorber layer material for utilization in thin film solar cell devices because of its non-toxic, earth abundance, and cost-effective properties. In this study, the effect of molybdenum disulfide (MoS2) as a buffer layer on the different parameters of CZTS-based solar cell devices was explored to design a highly efficient solar cell. While graphene is considered a transparent conducting oxide (TCO) layer for the superior quantum efficiency of CZTS thin film solar cells, MoS2 acts as a hole transport layer to offer electron–hole pair separation and an electron blocking layer to prevent recombination at the graphene/CZTS interface. This study proposed and analyzed a competent and economic CZTS solar cell structure (graphene/MoS2/CZTS/Ni) with MoS2 and graphene as the buffer and TCO layers, respectively, using the Solar Cell Capacitance Simulator (SCAPS)-1D. The proposed structure exhibited the following enhanced solar cell performance parameters: open-circuit voltage—0.8521 V, short-circuit current—25.3 mA cm−2, fill factor—84.76%, and efficiency—18.27%.

Performance evaluation of ZnSnN2 solar cells with Si back surface field using SCAPS-1D: A theoretical study

“…In the single-diode model, the current is typically expressed by the following equation (7) [ 30 ]: where I L is the load current, R s is the series resistance, R sh is the shunt resistance, I 0 is the reverse saturation current, and I is the output current. It is also possible to represent I 0 as follows in equation (8) [ 30 , 31 ]: where A is the p-n junction area, L n and L p are electron and hole diffusion lengths, and n i intrinsic carrier concentration, respectively.…”

“…The V oc is mathematically represented by the following equation (9) [ 30 ]: where T is temperature, and K is Boltzmann's constant, respectively.…”

A Direct Chemical Approach to Mitigate Environment Lead Contamination in Perovskite Solar Cells

“…Therefore, the development lead-free perovskite or avoiding lead leakage is important. Several research studies were conducted to enhance the stability and efficiency of lead-free perovskite solar cells [18][19][20][21][22][23].…”

Modeling and Simulation of MAPbI3-Based Solar Cells with SnS2 as the Electron Transport Layer (ETL) and MoS2 as the Hole Transport Layer (HTL)

“…This sandwich structure takes full advantage of the outstanding properties of this particular combination, thus contributing to the stability and device performance . In addition, MoS 2 exhibits a higher hole mobility (150 cm 2 V –1 s –1 ) than Spiro-OMeTAD (2 × 10 –4 cm 2 V –1 s –1 ). , Utilizing the drift-diffusion model or the Shockley–Read–Hall model for simulating solar cell configurations offers a valuable approach to tackle these challenges, facilitating energy professionals and designers with a comprehensive toolkit for tasks and calculations . In the present theoretical work, numerical modeling is utilized to improve the performance of solar cells designed through experimentation and to validate the simulation’s accuracy.…”