Si quantum dot-sensitized solar cells using Si nanoparticles produced by plasma CVD

Yuki Kawashima, Kousuke Yamamoto, Muneharu Sato, Kenta Nakahara, Takeaki Matsunaga, William Makoto Nakamura, Daisuke Yamashita, Hidefumi Matsuzaki, Giichiro Uchida, Kunihiro Kamataki, Naho Itagaki, Kazunori Koga, Masaharu Shiratani, Michio Kondo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We have fabricated Si quantum dot-sensitized solar cells by three assembling methods; the conventional method and two novel methods in which Si nanoparticles/TiO2 blend paste is coated onto FTO glass, or TiO 2 film. The highest current density is realized s solar cell for which Si nanoparticles/TiO2 blend paste is coated onto TiO 2 films. The result indicates that excitons generated in Si nanoparticles are separated into electrons and holes and such carriers are extracted to the outer circuit. Photon-to-current conversion efficiency (PCE) of our Si quantum dot-sensitized solar cells is larger than that of the cell without Si nanoparticles in a wavelength range below 500nm. It suggests that carrier generation in the Si nanoparticles is realized in the wavelength range less than 500 nm in the solar cell. Light intensity dependence of photo-current density shows superliner one for photon energy larger than twice of the bandgap energy of the Si nanoparticles.

Original languageEnglish
Title of host publicationProgram - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Pages3347-3351
Number of pages5
DOIs
Publication statusPublished - Dec 20 2010
Event35th IEEE Photovoltaic Specialists Conference, PVSC 2010 - Honolulu, HI, United States
Duration: Jun 20 2010Jun 25 2010

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Other

Other35th IEEE Photovoltaic Specialists Conference, PVSC 2010
CountryUnited States
CityHonolulu, HI
Period6/20/106/25/10

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All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Kawashima, Y., Yamamoto, K., Sato, M., Nakahara, K., Matsunaga, T., Nakamura, W. M., ... Kondo, M. (2010). Si quantum dot-sensitized solar cells using Si nanoparticles produced by plasma CVD. In Program - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010 (pp. 3347-3351). [5617205] (Conference Record of the IEEE Photovoltaic Specialists Conference). https://doi.org/10.1109/PVSC.2010.5617205