Enhanced Photovoltaic Performance of PEDOT:PSS/Si Heterojunction Solar Cell with ZnO BSF Layer: A Simulation Study using SCAPS-1D

被引:13
作者
Kumari, Premshila [1 ,2 ]
Punia, Urvashi [1 ,2 ]
Sharma, Deepak [1 ,2 ]
Srivastava, Avritti [1 ,2 ]
Srivastava, Sanjay K. [1 ,2 ]
机构
[1] CSIR Natl Phys Lab, Photovolta Metrol Sect, Adv Mat & Device Metrol Div, New Delhi 110012, India
[2] Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India
关键词
PEDOT:PSS; ZnO; BSF; Solar cells; Simulation; SCAPS-1D; SILICON;
D O I
10.1007/s12633-022-02163-y
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Here, we report an enhanced photovoltaic (PV) performance including open circuit voltage (V-oc), short circuit current (J(sc)), fill factor (FF) and power conversion efficiency (PCE) of Ni/PEDOT:PSS/n-Si/n-ZnO/Al heterojunction solar cells (HSCs) via numerical simulation. In this structure, n-ZnO is introduced at the interface of Si and Al as back surface field (BSF). Firstly, influence of various device parameters, such as thickness of Si, and PEDOT:PSS layers, carrier concentrations and defect density of Si and PEDOT:PSS on the PV performances of device without ZnO-BSF has been investigated numerically employing Solar Cell Capacitance Simulator (SCAPS-1D) software to find the best possible performance parameters of such HSCs. The maximum PCE of the optimized PEDOT:PSS/n-Si HSC without BSF is achieved as 24.26% with V-oc: 0.647 V, J(sc): 44.87 mA/cm(2), and FF: 83.52% for t(Si) of 150 mu m with N-d of 1 x 10(16) cm(-3). After introducing the ZnO-BSF layer of thickness and carrier concentration of 20 nm and 1 x 10(17) cm(-3) respectively, the significant enhancement in the PCE of the device has been observed. The PCE as high as 31.37% with V-oc: 0.784 V, J(sc): 45.31 mA/cm(2), and FF: 88.35% was obtained for an optimized ZnO-BSF layer. The PCE is more than 7% (absolute) higher than that of without ZnO-BSF layer. The significant improvement in the PV parameters, primarily in V-oc by similar to 137 mV was caused by high built-in potential developed across the junction after insertion of the ZnO-BSF layer. The quantum efficiency of the device further supported the enhanced performance resulting from the reduced recombination of charge carriers at the rear side after n-ZnO-BSF layer. The present numerical simulation study proposes a great potential of ZnO as the BSF layer for the enhanced PV performance of PEDOT:PSS/n-Si based HSCs. Highlights center dot Simulation study of PEDOT:PSS/Si heterojunction solar cells (HSCs) by SCAPS-1D. center dot Investigation of Si and PEDOT:PSS thickness, carrier and defect concentrations on PCE. center dot Significant enhancement in solar cell performance by ZnO-BSF based device structure. center dot Maximum PCE of > 31.0% and V-oc 0.78 V in ZnO-BSF based HSCs predicted by simulation. center dot Enhancement in V-oc explained by built-in potential developed across rear junction.
引用
收藏
页码:2099 / 2112
页数:14
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