期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 3, 期 17, 页码 2352-2356出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz301023c
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资金
- Robert A. Welch Foundation [F-1464]
- Air Force Research Laboratory [FA-8650-07-2-5061]
- NSF Industry/University Cooperative Research Center on Next Generation Photovoltaics [IIP-1134849]
- Direct For Computer & Info Scie & Enginr
- Division Of Computer and Network Systems [1134849] Funding Source: National Science Foundation
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.
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