Origin of low quantum efficiency of photoluminescence of InP/ZnS nanocrystals

Shirazi, Roza; Kovács, András; Corell, Dennis Dan; Gritti, Claudia; Thorseth, Anders; Dam-Hansen, Carsten; Petersen, Paul Michael; Kardynał, Beata

doi:10.1016/j.jlumin.2013.09.013

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…The correlation between QDs mean sizes and emission peak maxima was similar, as previously reported for the same type of colloidal QDs. 19 Based on the TEM pictures, known bulk InP density and weights of dried QDs solutions, we have calculated the molecular weight (MW) of the InP@ZnS_530 nm QDs, InP@ZnS_590 nm QDs, and InP@ZnS_650 nm QDs to be 62 647 g/mol, 85 619 g/mol, and 120 236 g/mol, respectively. In our case, the MW values refer to a single QD, which is treated as a molecule.…”

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confidence: 99%

Optical nonlinearities of colloidal InP@ZnS core-shell quantum dots probed by Z-scan and two-photon excited emission

et al. 2015

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confidence: 99%

Optical nonlinearities of colloidal InP@ZnS core-shell quantum dots probed by Z-scan and two-photon excited emission

et al. 2015

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“…These questions concern the fea tures of the formation and specific properties of aniso tropic InP QDs, the state of QD surfaces, the particu lar role of ligands in the passivation of surface defects, doping and effects of impurities on the spectral lumi nescent and magnetic properties of QDs with complex compositions, the studies performed with time resolu tion, blinking and Auger recombination effects, for mation of self organized structures of nanoparticles, and many others. The interested reader may also turn to recent reviews [18,19,[84][85][86][87][88], which provide information on the problems that have not been con sidered in this review.…”

Section: Other Sources Of Phosphorus For Synthesis Of Inp Qdsmentioning

confidence: 99%

Synthesis and properties of colloidal indium phosphide quantum dots

Бричкин

2015

Colloid J

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Semiconductor colloidal quantum dots possessing unique spectral luminescent characteristics are of great interest for the development of novel materials and devices, which are promising to be used in var ious fields. However, the contemporary high quality quantum dots contain Cd, Pb, Hg, Se, and Te ions and are toxic, with this circumstance limiting their wide practical application. Therefore, the attention of researchers has recently been focused on A III B V semiconductor quantum dots-in particular, InP ones, which are markedly more environmentally safe. InP quantum dots have spectral characteristics similar to those of well studied CdSe quantum dots and can, in principle, replace the latter in many cases, especially, taking into account their more pronounced size effect caused by the narrow energy gap and the large Bohr radius of the exciton. Moreover, the stronger InP covalent bond than the ionic one in A II B VI semiconductors makes it possible to expect that they have a higher photostability and stability in active media. This work pre sents a review of the modern literature devoted to the synthesis and properties of colloidal indium phosphide quantum dots, which are very promising for use as substitutes of toxic cadmium based quantum dots.

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