Pyrite Nanocrystal Solar Cells: Promising, or Fool's Gold?
| Autor: | Brian A. Korgel, Chet Steinhagen, Justin T. Harris, C. Jackson Stolle, Taylor B. Harvey |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
business.industry Schottky barrier Iron sulfide Nanotechnology Heterojunction Quantum dot solar cell engineering.material chemistry.chemical_compound Nanocrystal chemistry Photovoltaics engineering General Materials Science Pyrite Physical and Theoretical Chemistry Thin film business |
| Zdroj: | The journal of physical chemistry letters. 3(17) |
| ISSN: | 1948-7185 |
| Popis: | Pyrite-phase iron sulfide (FeS2) nanocrystals were synthesized to form solvent-based dispersions, or “solar paint,” to fabricate photovoltaic devices (PVs). Nanocrystals were sprayed onto substrates as absorber layers in devices with several different architectures, including Schottky barrier, heterojunction, and organic/inorganic hybrid architectures, to explore their viability as a PV material. None of the devices exhibited PV response. XRD and Raman spectroscopy confirmed the pyrite composition and phase purity of the nanocrystals. The electrical conductivity of the nanocrystal films was about 4 to 5 S/cm, more typical of metal nanocrystal films than semiconductor nanocrystal films, and the lack of PV response appears to derive from the highly conductive surface-related defects in pyrite that have been proposed. |
| Databáze: | OpenAIRE |
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