Journal article
Effects of Pb Treatment on Optical Properties of Aqueous CdSe Quantum Dots
Industrial & engineering chemistry research, v 55(1), pp 99-106
13 Jan 2016
Abstract
Cadmium selenide (CdSe) aqueous quantum dots (AQDs) with broadband trap-state emissions were synthesized using an environmentally friendly, aqueous method under room temperature. By treating CdSe AQDs with Pb precursor in solution, the photoluminescence (PL) intensity and quantum yield of the CdSe AQDs doubled. Furthermore, the absorption edge and PL peak wavelength of CdSe blue-shifted. It was found that the presence of excess Cd in the CdSe is essential to the observed behavior. A possible cation exchange between Pb and the excess Cd is proposed to explain the observation. Our study provides a unique way to increase the photoluminescence intensity of trap-state emission quantum dots.
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Details
- Title
- Effects of Pb Treatment on Optical Properties of Aqueous CdSe Quantum Dots
- Creators
- Cheng-Hsin Lu - Drexel UniversityWan Y. Shih - Drexel UniversityWei-Heng Shih - Drexel University
- Publication Details
- Industrial & engineering chemistry research, v 55(1), pp 99-106
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Materials Science and Engineering
- Web of Science ID
- WOS:000368323500013
- Scopus ID
- 2-s2.0-84954410697
- Other Identifier
- 991019167815504721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Chemical