Miniband Calculation of 3-D Nanostructure Array for Solar Cell Applications

Ming Yi Lee, Yi-ming Li, Seiji Samukawa

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Within the envelop-function framework, we propose a more efficient finite-element method to calculate the miniband structure and density of states in an idealistic nanocrystal array with realistic geometrical parameters. This method clearly reveals the miniband formation and accurately calculates the energy dispersion relationship. The calculated result agrees well with the analytical Kronig-Penney method. More importantly, this method surmounts the theoretical approximations of the multidimensional Kronig-Penney method, and provides significant information for 3-D quantum dots solar cell design by simulating an in-plane germanium nanodisk array in bulk silicon.

Original languageEnglish
Article number7265048
Pages (from-to)3709-3714
Number of pages6
JournalIEEE Transactions on Electron Devices
Volume62
Issue number11
DOIs
StatePublished - 14 Sep 2015

Keywords

  • Ge/Si quantum dot (QD)
  • miniband
  • solar cell

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