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| Hauptseite > Publikationsdatenbank > Origin of low quantum efficiency of photoluminescence of InP/ZnS nanocrystals > print |
| Hauptseite > Publikationsdatenbank > Origin of low quantum efficiency of photoluminescence of InP/ZnS nanocrystals > print |
| 001 | 187358 | ||
| 005 | 20240610121124.0 | ||
| 024 | 7 | _ | |a 10.1016/j.jlumin.2013.09.013 |2 doi |
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| 037 | _ | _ | |a FZJ-2015-01029 |
| 041 | _ | _ | |a English |
| 082 | _ | _ | |a 530 |
| 100 | 1 | _ | |a Shira, Roza |0 P:(DE-HGF)0 |b 0 |e Corresponding Author |
| 245 | _ | _ | |a Origin of low quantum efficiency of photoluminescence of InP/ZnS nanocrystals |
| 260 | _ | _ | |a New York, NY [u.a.] |c 2014 |b Elsevier |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1422457243_8067 |2 PUB:(DE-HGF) |
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| 520 | _ | _ | |a In this paper, we study the origin of a strong wavelength dependence of the quantum efficiency of InP/ZnS nanocrystals. We find that while the average size of the nanocrystals increased by 50%, resulting in longer emission wavelength, the quantum efficiency drops more than one order of magnitude compared to the quantum efficiency of the small nanocrystals. By correlating this result with the time-resolved photoluminescence we find that the reduced photoluminescence efficiency is caused by a fast growing fraction of non-emissive nanocrystals while the quality of the nanocrystals that emit light is similar for all samples. Transmission electron microscopy reveals the polycrystalline nature of many of the large nanocrystals, pointing to the grain boundaries as one possible site for the photoluminescence quenching defects. |
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| 700 | 1 | _ | |a Kovacs, Andras |0 P:(DE-Juel1)144926 |b 1 |u fzj |
| 700 | 1 | _ | |a Dan Corell, Dennis |0 P:(DE-HGF)0 |b 2 |
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| 773 | _ | _ | |a 10.1016/j.jlumin.2013.09.013 |0 PERI:(DE-600)1491401-3 |p 936-939 |t Journal of luminescence |v 145 |y 2014 |x 0022-2313 |
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