Numerical Analysis on Design of High Performance CSTZ Solar Cells

Cherry Tin,Saw Aung Yein Oo,Tin Tin Hla

doi:10.11648/j.com.20200801.13

Abstract

The surging of photovoltaics has witnessed the boost of numerous fascinating approaches to the enhancement of power conversion efficiencies (PCE) of the devices. For the search of new metal-halide CZTS solar cell materials, tolerance factors are calculated from the ionic radius of each site and are often utilized as the critical factors to expect the materials forming CZTS structure. Significant progress in photovoltaic conversion of solar energy can be achieved by new technological approaches that will improve the efficiency of solar cells and make them appropriate for mass production. The paper presents the numerical analysis on design of high performance CSTZ solar cells with the help of MATLAB programming. The performance reliance on physical properties is estimated, together with the layer thickness, carrier density, defect density and interface defect density. The best possible the layer thickness and carrier density were originated in this study. The defect density in the absorber would be controlled for reducing the recombination. The interface between the layer of absorber and the layer of buffer is essential for the performance of that solar cell. The interface defect density is embarrassed to accomplish enviable conversion efficiency. The results confirm that the experimental works could be met with the theoretical analysis in this paper.

Highlights

Solar cells convert solar energy, in the form of electromagnetic radiation, into electrical energy
In Figure ure, the charge carriers are separated by the electric field across the pn junction and the electrons are transported through a load in the external circuit where they do work [1-6]
The fill factors were accepting to get the high performance of CZTS solar cell design

Summary

Introduction

Solar cells convert solar energy, in the form of electromagnetic radiation, into electrical energy. There is a wide range of other semiconductor material capable of producing solar cells of acceptable efficiencies. Homojunction, heterojunction, metal-semiconductor, and some dye-sensitized solar cells use all-solid structures, whereas liquid-semiconductor and many dye- sensitized cells use solid – liquid structures These materials can be inorganic or organic. Section mentions the model and physical parameters of CZTS solar cell structure. Model and Physical Parameters of CZTS Solar Cell Structure. Considering the best case where all the photon energy are improved into short circuit current, Im=Ishort circuit, fill factor becomes. This derived experimental equation will definitely assist to find the cells optimist from the imitation open circuit voltage result.

Analyzed the Device System

Analysis on Carrier Density in Absorber

Analysis on Defect Density in the Absorber

Simulation Results and Discussions

Conclusions