Effect of Defects at the Buffer Layer CdS/Absorber CIGS Interface on CIGS Solar Cell Performance  

作　　者：Boureima Traoré Soumaïla Ouédraogo Marcel Bawindsom Kébré Daouda Oubda Issiaka Sankara Adama Zongo François Zougmoré Boureima Traoré;Soumaïla Ouédraogo;Marcel Bawindsom Kébré;Daouda Oubda;Issiaka Sankara;Adama Zongo;François Zougmoré(Laboratoire de Matériaux et Environnement (LA.M.E)-UFR/SEA, Département de Physique, Université Joseph Ki-ZERBO, Ouagadougou, Burkina Faso)

机构地区：[1]Laboratoire de Matériaux et Environnement (LA.M.E)-UFR/SEA, Département de Physique, Université Joseph Ki-ZERBO, Ouagadougou, Burkina Faso

出　　处：《Advances in Chemical Engineering and Science》2023年第4期289-300,共12页化学工程与科学期刊（英文）

摘　　要：This scientific paper presents a study investigating the effects of defects at the CdS/CIGS and CdS/SDL interfaces on the performance of CIGS solar cells. The objective of this study is to analyze the influence of defects at the interface between the CdS buffer layer and the CIGS absorber, as well as the surface defect layer (SDL), on CIGS solar cell performance. The study explores three key aspects: the impact of the conduction band offset (CBO) at the CdS/CIGS interface, the effects of interface defects and defect density on performance, and the combined influence of CBO and defect density at the CdS/ SDL and SDL/CIGS interfaces. For interface defects not exceeding 10¹³ cm^-2, we obtained a good efficiency of 22.9% when -0.1 eV analyzing the quality of CdS/SDL and SDL/CIGS junctions, it appears that defects at the SDL/CIGS interface have very little impact on the performances of the CIGS solar cell. By optimizing the electrical parameters of the CdS/SDL interface defects, we achieved a conversion efficiency of 23.1% when -0.05 eV < CBO < 0.05 eV.This scientific paper presents a study investigating the effects of defects at the CdS/CIGS and CdS/SDL interfaces on the performance of CIGS solar cells. The objective of this study is to analyze the influence of defects at the interface between the CdS buffer layer and the CIGS absorber, as well as the surface defect layer (SDL), on CIGS solar cell performance. The study explores three key aspects: the impact of the conduction band offset (CBO) at the CdS/CIGS interface, the effects of interface defects and defect density on performance, and the combined influence of CBO and defect density at the CdS/ SDL and SDL/CIGS interfaces. For interface defects not exceeding 10¹³ cm^-2, we obtained a good efficiency of 22.9% when -0.1 eV analyzing the quality of CdS/SDL and SDL/CIGS junctions, it appears that defects at the SDL/CIGS interface have very little impact on the performances of the CIGS solar cell. By optimizing the electrical parameters of the CdS/SDL interface defects, we achieved a conversion efficiency of 23.1% when -0.05 eV < CBO < 0.05 eV.

关 键 词：Numerical Simulation CdS/CIGS Interface Interface Defects Conduction Band Offset (CBO) Surface Defect Layer (SDL) 

分 类 号：TM9[电气工程—电力电子与电力传动]