Proposal of simplified model for absorption coefficients in quantum dot array based intermediate band solar cell structure

• Mehdipour Amir

  Department of Electrical and Electronic Engineering, Kobe University

• Sasaoka Kenji

  Department of Electrical and Electronic Engineering, Kobe University

• Ogawa Matsuto

  Department of Electrical and Electronic Engineering, Kobe University

• Souma Satofumi

  Department of Electrical and Electronic Engineering, Kobe University

抄録

We propose a simplified theoretical model to analyze the absorption coefficients in quantum dot intermediate band solar cell (QD-IBSC) structure. Our theoretical model, based on the multiband tight-binding Hamiltonian including the conduction, valence, and the intermediate band, can capture some essential features in the actual QD-IBSC such as the absorption path dependence of the absorption strength and the line shape of the absorption spectrum in spite of its simplicity. The main feature of this model is its ability to be applied to any QD-IBSC system regardless of the geometrical parameters (QDs shapes and spacing) or the base materials by changing the relevant coupling parameters. The proposed simplified should be of useful for the semi-quantitative understanding and modeling of QD-IBSC.

収録刊行物

• IEICE Electronics Express

  IEICE Electronics Express 11 (17), 20140548-20140548, 2014

  一般社団法人 電子情報通信学会

キーワード

• quantum dot
• solar cells
• intermediate band
• tight-binding model

詳細情報

• CRID: 1390001205214721536
• NII論文ID: 130004678218
• DOI: 10.1587/elex.11.20140548
• ISSN: 13492543
• Web Site: https://www.jstage.jst.go.jp/article/elex/11/17/11_11.20140548/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可