Simulation Study of Multilayer Si/SiC Quantum Dot Superlattice for Solar Cell Applications

Yi Chia Tsai, Ming-Yi Lee, Yi-Ming Li, Mohammad Maksudur Rahman, Seiji Samukawa

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


This letter presents a computational study on the band profile of Si/SiC quantum dot (QD) superlattice for solar cell devices and the theoretical conversion efficiency. We find that both the miniband energy of QD superlattice and the conversion efficiency of QD solar cell highly correlate to the space among layers and the number of layers. When the distance between layers is >2 nm, the impact of the number of layers on the tunable ground-state energy bandwidth is weakened. The conversion efficiency increases as the layer distance decreases; however, when the number of layers is greater than 4, the increasing rate of conversion efficiency declines.

Original languageEnglish
Article number7463544
Pages (from-to)758-761
Number of pages4
JournalIeee Electron Device Letters
Issue number6
StatePublished - Jun 2016


  • Conversion efficiency.
  • Layer distance
  • Miniband
  • Multilayer
  • Si/SiC Quantum dot
  • Solar cell
  • Superlattice


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