Inorganic–organic nanocomposites of CdSe nanocrystals surface-modified with oligo- and poly(fluorene) moieties

Kanelidis, Iohannis; Vaneski, Aleksandar; Lenkeit, Daniel; Pelz, Simon; Elsner, Victoria; Stewart, Raphaela M.; Rodrı́guez-Fernández, Jessica; Lutich, Andrey A.; Susha, Andrei S.; Theissmann, Ralf; Adamczyk, Sylwia; Rogach, Andrey L.; Holder, Elisabeth

doi:10.1039/c0jm03546g

Cited by 27 publications

(24 citation statements)

References 32 publications

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“…Similar approaches have also been developed for e.g. CdSe/PPV [135] or CdSe/ oligofluorene [136] nanocomposites, in both nanoparticles were capped with polymerizable ligands.…”

Section: Solid State In Situ Synthesesmentioning

confidence: 99%

In situ syntheses of semiconducting nanoparticles in conjugated polymer matrices and their application in photovoltaics.

Rath¹,

Trimmel²

2014

Hybrid Materials

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Hybrid solar cells based on conjugated polymers and inorganic semiconducting nanoparticles combine beneficial properties of organic and inorganic semiconductors and are, therefore, an exciting alternative to pure organic or inorganic solar cell technologies. Several approaches for the fabrication of hybrid solar cells are already elaborated and explored. In the last years routes have emerged, where the nanoparticles are prepared directly in the matrix of the conjugated polymer. Here, the conjugated polymer prevents the nanoparticles from excessive growth and thereby makes additional capping agents obsolete. This review focuses on in situ preparation methods of inorganic semiconducting nanoparticles in conjugated polymers in view of applications in hybrid solar cells. The details, advantages and disadvantages of the different in situ methods are critically examined and put in comparison to the classical route where pre-synthesized nanoparticles are used. Various key factors influencing the solar cell performance as well as future strategies for increasing the overall efficiency of hybrid solar cells prepared via in situ routes are discussed. KeywordsInorganic-organic hybrid solar cell • Nanocomposite • OPV

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“…Similar approaches have also been developed for e.g. CdSe/PPV [135] or CdSe/ oligofluorene [136] nanocomposites, in both nanoparticles were capped with polymerizable ligands.…”

Section: Solid State In Situ Synthesesmentioning

confidence: 99%

In situ syntheses of semiconducting nanoparticles in conjugated polymer matrices and their application in photovoltaics.

Rath¹,

Trimmel²

2014

Hybrid Materials

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“…Long-chain carbon ligands impede the complete polymerization of resin, which leads to local softening after the thermal curing process and reduces its mechanical stability. In order to minimize such issues, the hydrophobic ligands of QDs can be replaced with oligomeric or polymeric ligands containing functional anchor moieties (such as thiols, amines, or carboxylicgroups) which increase their miscibility with the polymer matrix [52]. Another common method is to protect QDs with an optically transparent barrier material such as silica, forming QDs-silica composite [53][54][55][56][57][58][59][60][61][62].…”

Section: All-qd Based Wledsmentioning

confidence: 99%

Recent Progress in Quantum Dot Based White Light-Emitting Devices

Su,

Zhang,

Zhang

et al. 2016

Top Curr Chem (Z)

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Colloidal semiconductor quantum dots (QDs) have been widely employed as components of white light-emitting diodes (WLEDs) due to their excellent optical properties (highly saturated emission color, high luminescence quantum yield) as well as thermal and chemical stability. Much effort has been devoted to realize efficient QD-based WLEDs, including the synthesis of superior luminescent nanomaterials with excellent stabilities, and the design of advanced devices structures. In this paper, after introducing photometric parameters of the contemporary QD-based WLEDs, we highlight the recent progress in these devices grouped according to three main mechanisms for white light generation: optical excitation, direct charge carrier injection, and Förster resonance energy transfer. The methods to generate white light, the design of QD emitters and QD-based devices, as well as their fabrication techniques are considered, and the key scientific and technological challenges in the QD-based WLEDs are highlighted. Novel light-emitting materials for WLEDs such as carbon-based nanoparticles are also considered.

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“…Using the amino‐functional fluorene 6,6′‐(2,7‐dibromo‐9H‐fluorene‐9,9‐diyl)dihexan‐1‐amine as a surfactant during the NC synthesis, they were able to graft oligo(fluorene) from the nanoparticle surface by a bis (1,5‐cyclooctadiene)nickel(0) mediated Yamamoto polycondensation. In the same manner the NCs were functionalized with the statistical copolymer using 2,7‐dibromo‐9,9‐dioctyl‐9H‐fluorene as a second monomer …”

Section: Compatibilization Of Nanoparticles and Polymersmentioning

confidence: 99%

Morphology Control in Biphasic Hybrid Systems of Semiconducting Materials

Mathias

Fokina

Landfester

et al. 2015

Macromol. Rapid Commun.

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Simple blends of inorganic nanocrystals and organic (semiconducting) polymers usually lead to macroscopic segregation. Thus, such blends typically exhibit inferior properties than expected. To overcome the problem of segregation, polymer coated nanocrystals (nanocomposites) have been developed. Such nanocomposites are highly miscible within the polymer matrix. In this Review, a summary of synthetic approaches to achieve stable nanocomposites in a semiconducting polymer matrix is presented. Furthermore, a theoretical background as well as an overview concerning morphology control of inorganic NCs in polymer matrices are provided. In addition, the morphologic behavior of highly anisotropic nanoparticles (i.e. liquid crystalline phase formation of nanorod-composites) and branched nanoparticles (spatial orientation of tetrapods) is described. Finally, the morphology requirements for the application of inorganic/organic hybrid systems in light emitting diodes and solar cells are discussed, and potential solutions to achieve the required morphologies are provided.

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Inorganic–organic nanocomposites of CdSe nanocrystals surface-modified with oligo- and poly(fluorene) moieties

Cited by 27 publications

References 32 publications

In situ syntheses of semiconducting nanoparticles in conjugated polymer matrices and their application in photovoltaics.

In situ syntheses of semiconducting nanoparticles in conjugated polymer matrices and their application in photovoltaics.

Recent Progress in Quantum Dot Based White Light-Emitting Devices

Morphology Control in Biphasic Hybrid Systems of Semiconducting Materials

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