One-pot synthesis of chalcopyrite-based semi-conductor nanoparticles
US8231848B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2012 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Apr 10, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/827
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ternary and quaternary Chalcopyrite CuInxGa1-xSySe2-y (CIGS, where 0≦x and y≦1) nanoparticles were synthesized from molecular single source precursors (SSPs) by a one-pot reaction in a high boiling solvent using salt(s) (i.e. NaCl as by-product) as heat transfer agent via conventional convective heating method. The nanoparticles sizes were 1.8 nm to 5.2 nm as reaction temperatures were varied from 150° C. to 190° C. with very high-yield. Tunable nanoparticle size is achieved through manipulation of reaction temperature, reaction time, and precursor concentrations. In addition, the method developed in this study was scalable to achieve ultra-large quantities production of tetragonal and quaternary Chalcopyrite CIGS nanoparticles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.