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2018 Volume 27 Issue 3
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Haibin Huang, Gangyu Tian, Lang Zhou, Jiren Yuan, Wolfgang R.Fahrner, Wenbin Zhang, Xingbing Li, Wenhao Chen, Renzhong Liu. 2018: Simulation and experimental study of a novel bifacial structure of silicon heterojunction solar cell for high efficiency and low cost, Chinese Physics B, 27(3): 520-525. doi: 10.1088/1674-1056/27/3/038502
Citation: Haibin Huang, Gangyu Tian, Lang Zhou, Jiren Yuan, Wolfgang R.Fahrner, Wenbin Zhang, Xingbing Li, Wenhao Chen, Renzhong Liu. 2018: Simulation and experimental study of a novel bifacial structure of silicon heterojunction solar cell for high efficiency and low cost, Chinese Physics B, 27(3): 520-525. doi: 10.1088/1674-1056/27/3/038502
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Simulation and experimental study of a novel bifacial structure of silicon heterojunction solar cell for high efficiency and low cost

  • Institute of Photovoltaics, Nanchang University, Nanchang 330031, China

  • Institute of Photovoltaics, Nanchang University, Nanchang 330031, China;Department of Physics, Nanchang University, Nanchang 330031, China

  • GCL System Integration Technology Co.Ltd., Shanghai 201700, China

  • Hareon Solar Co.Ltd., Taicang 215400, China

  • Available Online: 01/01/2018
  • Fund Project: the Jiangxi Provincial Key Research and Development Foundation,China(Grant 2016BBH80043)%the Open Fund of Jiangsu Key Laboratory of Materials and Technology for Energy Conversion,China(Grant NJ20160032)%the National Natural Science Foundation of China(Grant .61741404,61464007,and 51561022)
  • A novel structure of Ag grid/SiNx/n+-c-Si/n-c-Si/i-a-Si∶H/p+-a-Si∶H/TCO/Ag grid was designed to increase the efficiency of bifacial amorphous/crystalline silicon-based solar cells and reduce the rear material consumption and production cost.The simulation results show that the new structure obtains higher efficiency compared with the typical bifacial amorphous/crystalline silicon-based solar cell because of an increase in the short-circuit current (Jsc),while retaining the advantages of a high open-circuit voltage,low temperature coefficient,and good weak-light performance.Moreover,real cells composed of the novel structure with dimensions of 75 mm × 75 mm were fabricated by a special fabrication recipe based on industrial processes.Without parameter optimization,the cell efficiency reached 21.1％ with the Jsc of 41.7 mA/cm2.In addition,the novel structure attained 28.55％ potential conversion efficiency under an illumination of AM 1.5 G,100 mW/cm2.We conclude that the configuration of the Ag grid/SiNx/n+-c-Si/n-c-Si/i-a-Si∶H/p+-a-Si∶H/TCO/Ag grid is a promising structure for high efficiency and low cost.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Simulation and experimental study of a novel bifacial structure of silicon heterojunction solar cell for high efficiency and low cost

  • Available Online: 01/01/2018

Abstract: A novel structure of Ag grid/SiNx/n+-c-Si/n-c-Si/i-a-Si∶H/p+-a-Si∶H/TCO/Ag grid was designed to increase the efficiency of bifacial amorphous/crystalline silicon-based solar cells and reduce the rear material consumption and production cost.The simulation results show that the new structure obtains higher efficiency compared with the typical bifacial amorphous/crystalline silicon-based solar cell because of an increase in the short-circuit current (Jsc),while retaining the advantages of a high open-circuit voltage,low temperature coefficient,and good weak-light performance.Moreover,real cells composed of the novel structure with dimensions of 75 mm × 75 mm were fabricated by a special fabrication recipe based on industrial processes.Without parameter optimization,the cell efficiency reached 21.1％ with the Jsc of 41.7 mA/cm2.In addition,the novel structure attained 28.55％ potential conversion efficiency under an illumination of AM 1.5 G,100 mW/cm2.We conclude that the configuration of the Ag grid/SiNx/n+-c-Si/n-c-Si/i-a-Si∶H/p+-a-Si∶H/TCO/Ag grid is a promising structure for high efficiency and low cost.

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