High photo-current generation in a three-dimensional silicon quantum dot superlattice fabricated by combination of bio-template and neutral beam etching for quantum dot solar cell

Mohammad Maksudur Rahman, Makoto Igarashi, Weiguo Hu, Mohd Erman Syazwan, Yusuke Hoshi, Noritaka Usami, Seiji Samukawa

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

A Quantum Dot Superlattice (QDSL) offers high prospect for new generation photovoltaics. We fabricated and characterized a 3-dimensional array of Si-NDs as a QDSL with a high-aspect ratio, clear interface, and uniform size by using our advanced top-down technology consisting of bio-template and neutral beam etching processes for high-efficiency solar cells. Conductive atomic force microscopy measurements revealed that the conductivity became higher as the arrangement was changed from single Si-ND to 2D and 3D arrays with the same matrix of SiC, i.e. the coupling of wave functions was changed. Moreover, we measured the contribution of 3D Si-NDs array in producing photocurrent inside a quantum dot solar cell and also observed a higher photo absorption of sunlight by 3D Si-NDs (30%) than by a 2D array of Si-NDs (10%).

本文言語English
ホスト出版物のタイトル39th IEEE Photovoltaic Specialists Conference, PVSC 2013
出版社Institute of Electrical and Electronics Engineers Inc.
ページ2456-2458
ページ数3
ISBN(印刷版)9781479932993
DOI
出版ステータスPublished - 2013
イベント39th IEEE Photovoltaic Specialists Conference, PVSC 2013 - Tampa, FL, United States
継続期間: 2013 6 162013 6 21

出版物シリーズ

名前Conference Record of the IEEE Photovoltaic Specialists Conference
ISSN(印刷版)0160-8371

Other

Other39th IEEE Photovoltaic Specialists Conference, PVSC 2013
国/地域United States
CityTampa, FL
Period13/6/1613/6/21

ASJC Scopus subject areas

  • 制御およびシステム工学
  • 産業および生産工学
  • 電子工学および電気工学

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