Synthesis and Transformation of Zn-Doped PbS Quantum Dots
A micelle-assisted wet-chemistry route is developed to synthesize pure and Zn-doped lead sulfide (PbS) quantum dots (QDs) and nanocrystals (NCs) under microwave irradiation. The formation mechanism includes three major steps, initialization of π-bonded complex, transformation into a micelle structur...
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| Veröffentlicht in: | Journal of physical chemistry. C 2012-10, Vol.116 (41), p.22001-22008 |
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| container_end_page | 22008 |
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| container_issue | 41 |
| container_start_page | 22001 |
| container_title | Journal of physical chemistry. C |
| container_volume | 116 |
| creator | He, Xingliang Demchenko, Iraida N Stolte, W. C van Buuren, Anthony Liang, Hong |
| description | A micelle-assisted wet-chemistry route is developed to synthesize pure and Zn-doped lead sulfide (PbS) quantum dots (QDs) and nanocrystals (NCs) under microwave irradiation. The formation mechanism includes three major steps, initialization of π-bonded complex, transformation into a micelle structure, and the dissipation of nanoparticles (NPs). The micelle structure plays an important role in PbS NCs and QDs transformation and formation. X-ray absorption near-edge structure (XANES) analysis confirms the quantum confinement in PbS QDs. The Burstein–Moss effect is responsible for the blue-shift of the absorption induced by Zn doping. This research opens a new way to prepare NCs and QDs that enables high-resolution analysis in quantum refinement and electronic structures. The NCs and QDs produced here have strong potential in applications in optical and electronic communication. |
| doi_str_mv | 10.1021/jp304728u |
| format | Article |
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| source | ACS Publications |
| subjects | Chemical synthesis methods Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Methods of nanofabrication Nanocrystals and nanoparticles Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Physics |
| title | Synthesis and Transformation of Zn-Doped PbS Quantum Dots |
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