Design and simulation of Si/SiC quantum dot superlattice solar cells with Al2O3 passivation layer

Yi Chia Tsai, Ming Yi Lee, Yiming Li, Seiji Samukawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

By simultaneously considering the enhancement of quantum confinement on the effective bandgap and minimum transition energy, the silicon (Si)/ silicon carbide (SiC) quantum dot superlattice (SiC-QDSL) with aluminum oxide (Al2O3-QDSL) passivation layer shows the high short-circuit current (Jsc) of 4.77 mA/cm2 in theoretical, which agrees with the Jsc of 4.75 mA/cm2 obtained in the experiment under an AM1.5 and one sun illumination. Moreover, the reduction of efficiency in an ultra-dense QD configuration can be ameliorated by exploiting the Al2O3 passivation layer. As the result, a high conversion efficiency of 16.3% is optimized by using the QD geometry from experiment and an inter-dot spacing of 0.3 nm.

Original languageEnglish
Title of host publication2017 IEEE 17th International Conference on Nanotechnology, NANO 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages341-344
Number of pages4
ISBN (Electronic)9781509030286
DOIs
Publication statusPublished - 2017 Nov 21
Event17th IEEE International Conference on Nanotechnology, NANO 2017 - Pittsburgh, United States
Duration: 2017 Jul 252017 Jul 28

Publication series

Name2017 IEEE 17th International Conference on Nanotechnology, NANO 2017

Other

Other17th IEEE International Conference on Nanotechnology, NANO 2017
CountryUnited States
CityPittsburgh
Period17/7/2517/7/28

Keywords

  • Conversion efficiency
  • Density of States
  • Layer distance
  • Minibands
  • Multilayer
  • Si/SiC Quantum dot
  • Solar cell
  • Superlattice

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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  • Cite this

    Tsai, Y. C., Lee, M. Y., Li, Y., & Samukawa, S. (2017). Design and simulation of Si/SiC quantum dot superlattice solar cells with Al2O3 passivation layer. In 2017 IEEE 17th International Conference on Nanotechnology, NANO 2017 (pp. 341-344). [8117369] (2017 IEEE 17th International Conference on Nanotechnology, NANO 2017). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NANO.2017.8117369