Preparation of Ultrafine Chalcopyrite Nanoparticles via the Photochemical Decomposition of Molecular Single-Source Precursors

Journal Article · Wed May 10 04:00:00 EDT 2006 · Nano Letters, 6(6):1218-1223

DOI:https://doi.org/10.1021/nl060661f· OSTI ID:892889

Nairn, Justin J; Shapiro, Pamela J; Twamley, Brendan; Pounds, Tyler D; Von Wandruszka, Ray; Fletcher, T RICK; Williams, Mark; Wang, Chong M; Norton, M G

The synthesis and characterization of ultrafine CuInS2 nanoparticles are described. Ultraviolet irradiation was used to decompose a molecular single source precursor, yielding organic soluble {approx}2 nm sized nanoparticles with a narrow size distribution. UV-vis absorption, 1H and 31P(1H) NMR, and fluorescence spectroscopies and mass spectrometry were used to characterize decomposition of the precursors and nanoparticle formation. The nanoparticles were characterized by high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy energy dispersive X-ray spectroscopy, powder X-ray diffraction (XRD), electron diffraction, inductively coupled plasma analysis, UV-vis absorption spectroscopy, and fluorescence spectroscopy. They have a wurzite-type crystal structure with a copper-rich composition. The hypsochromic shift in their emission band due to quantum confinement effects is consistent with the size of the nanocrystals indicated in the HRTEM and XRD analyses.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 892889
• Report Number(s): PNNL-SA-50000; 11692
• Journal Information: Nano Letters, 6(6):1218-1223, Journal Name: Nano Letters, 6(6):1218-1223
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
ABSORPTION SPECTROSCOPY
CHALCOPYRITE
CONFINEMENT
CRYSTAL STRUCTURE
ELECTRON DIFFRACTION
Environmental Molecular Sciences Laboratory
FLUORESCENCE
FLUORESCENCE SPECTROSCOPY
IRRADIATION
MASS SPECTROSCOPY
PRECURSOR
SCANNING ELECTRON MICROSCOPY
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY