Hybrid quasi-3D optimization of grid architecture for single junction photovoltaic converters

Veikka Nikander, Jianguo Wei, Arto Aho, Ville Polojärvi, Antti Tukiainen, Mircea Guina

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A numerical study of metal front contacts grid spacing for photovoltaic (PV) converter of relatively small area is presented. The model is constructed based on Solcore, an open-source Python-based library. A three-step-process is developed to create a hybrid quasi-3D model. The grid spacing under various operating conditions was assessed for two similar p–n and n–p structures. The key target was finding optimal configuration to achieve the highest conversion efficiency at different temperatures and illumination profiles. The results show that the n–p structure yields wider optimal spacing range and the highest output power. Also, it was found that temperature increase and illumination nonuniformity results in narrower optimal spacing for both structure architectures. Analyzing the current–voltage characteristics, reveals that resistive losses are the dominant loss mechanism bringing restriction in terms of ability to handle nonuniform illumination.

Original languageEnglish
Article number205
Number of pages14
JournalOptical and Quantum Electronics
Issue number4
Publication statusPublished - Apr 2021
Publication typeA1 Journal article-refereed


  • Front contact grid optimization
  • Photovoltaic converter
  • Power over fiber
  • Quasi-3D simulation
  • Solcore
  • Super Gaussian illumination

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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