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

Ming Yi Lee, Yiming Li, Seiji Samukawa

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

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
Publication statusPublished - 2015 Sep 14

Keywords

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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