Abstract
We successfully utilize the concept of coalescence and room-temperature sintering to prepare morphologically different nanoparticles. n-Type chalcogenide (CuIn5S8) nanocrystals are synthesized at room temperature by simple mixing of oppositely charged precursor nanoparticles. The coalescence of polycation-coated CuS nanoparticles and negatively charged In2S3 nanoplates is driven by close contact of the particles due to electrostatic interactions. Analysis by X-ray diffraction, transmission electron microscopy (TEM) imaging, and Raman spectroscopy confirms the formation of single-phase CuIn5S8 without traceable secondary phase. In a photovoltaic device, the use of the coalesced particles yields a power conversion efficiency of 1.8%.
Original language | English |
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Pages (from-to) | 3290-3294 |
Number of pages | 5 |
Journal | ChemSusChem |
Volume | 7 |
Issue number | 12 |
DOIs | |
State | Published - Dec 2014 |
Bibliographical note
Publisher Copyright:© 2014 Wiley-VCH Verlag GmbH & Co. KGaA.
Keywords
- Chalcogens
- Coalescence
- Copper
- Solar cells
- Welding