Optoelectronic properties of polymer-nanocrystal composites active at near-infrared wavelengths

Solomeshch, Olga; Kigel, Ariel; Saschiuk, Aldona; Medvedev, V.S.; Aharoni, Assaf; Razin, Alexey; Eichen, Yoav; Banin, Uri; Lifshitz, Efrat; Tessler, Nir

doi:10.1063/1.2064307

Cited by 29 publications

(33 citation statements)

References 28 publications

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“…Filling of these traps is necessary to achieve a flow of carriers through the full layer thickness to the interface, resulting in an increase of the turn-on voltage. These effects are in agreement with experimental observations [33][34][35][36]. Fig.…”

Section: Simulation Resultssupporting

confidence: 94%

Electronic and excitonic processes in multilayer organic light emitting devices incorporating PbSe quantum dots

2011

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In this work we investigate the operation mechanism of hybrid organic/inorganic quantum dot light emitting devices (QD-LEDs). We employ a numerical method previously established to describe current-voltage characteristics, spatial distributions of charge, electric field, and recombination rate in organic light emitting devices (OLEDs). The numerical solution of the continuity and Poisson equations have been extended to treat internal organic/Quantum Dot (QD) interfaces, recombination processes in the polymer matrix and in the QDs, and the charge acquired by the QDs. The contact boundary condition is taken to be Schottky contact boundary condition. Also, we consider the exciton formation and diffusion processes. The simulation results trend and experimental data are in good agreement.

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Section: Simulation Resultssupporting

confidence: 94%

Electronic and excitonic processes in multilayer organic light emitting devices incorporating PbSe quantum dots

2011

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“…It is attractive in various applications such as laser materials [4], solar cells [5], infrared detectors [6], near-IR luminescence [7] and thermoelectric devices [8]. In the past few years, various methods including sonochemical synthesis [9], hydrothermal/solvothermal synthesis [10,11] and chemical bath deposition method [12] have been used to prepare PbSe nanocrystals since they are able to the control over size and morphology.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of monodispersed PbSe nanocubes

Wang¹,

Dong

et al. 2009

Cryst. Res. Technol.

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Monodispersed PbSe nanocubes were synthesized through a simple hydrothermal method by using Pb 2+ -EDTA complex and Na 2 SeSO 3 . Composition and morphology of the samples were characterized by means of XRD, TEM and SEM. The gradually releasing of Pb 2+ from Pb 2+ -EDTA complex, and the adopting of PVP can adjust the growth rate in <100> and <111> directions of PbSe. Both Pb 2+ -EDTA complex and PVP played important roles in the crystal growth of the monodispersed PbSe nanocubes. In addition, UV-vis and photoluminescence properties were characterized. E g of the PbSe nanocubes is 1.5 eV approximately, which is much larger than that of bulk PbSe. Under PL excitation at 406 nm, a red emission peak at 696 nm is observed, showing that the synthesized PbSe is luminescent nanomaterials.

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“…MEH-PPV is the most common polymer used as host in hybrid lightabsorbing or -emitting devices. [136][137][138][139][140] Some authors reported yellow-PPV, 140 CN-PPV 141,142 or methylsubstituted ladder-type poly(paraphenylene) (MeLPPP) 143 as hosts (Fig. 7).…”

Section: Technology Driven Exploration Of Hybrid Materialsmentioning

confidence: 99%

Review—Organic-Inorganic Hybrid Functional Materials: An Integrated Platform for Applied Technologies

Mir

Nagahara

Thundat

et al. 2018

J. Electrochem. Soc.

305

156

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Hybrid functional materials, constituting both inorganic and organic components, are considered potential platforms for applications in extremely diverse fields such as optics, micro-electronics, transportation, health, energy, energy storage, diagnosis, housing, environment and the highly relevant area is Internet of Things (IoT). Material properties of hybrid materials can be tuned by modification of the composition on the molecular scale to produce smart materials. Cross-cutting approaches, to synergistically couple molecular engineering and processing allows to tailor complex hybrid systems of various shapes with perfect control over size, composition, functionality, and morphology. The detailed description and discussion of variety of hybrid functional organicinorganic materials and their contribution in the designing of specific modern technologies is the prime focus of this review. There is an enormous demand for hybrid materials to provide technological breakthroughs with the most sought after being the enabling of the IoT. Interest in the field of IoT will witness exponential growth over the next decade as markets realize the true potential of realtime data acquisition for various entertainment, knowledge dissemination, defense, environmental, and healthcare applications. Many of the well-established materials, such as metals, 1 ceramics, 2-4 or plastics 5,6 cannot fulfill all technological desires for the various new applications. In addition to the early interest in structural hybrid materials based on carbon-silicon networks, many recent efforts have centered on the design of functional hybrid materials which harness the chemical activity of their components. This approach has been successfully used in recent years in the design of hybrid polymers 7 with special emphasis on structural hybrid materials based on mixed silicon-carbon networks prepared by sol-gel methods [8][9][10][11][12] which can also entrap additional active species. 13 In this field the stakes are high and scientists aim at producing structural materials with properties between those of inorganic glasses and organic polymers.8 But the expectations go beyond mechanical strength and thermal and chemical stability. These new materials are also sought for improved optical, 14-17 and electrical 18,19 properties, luminescence, 12,20-25 ionic conductivity, [26][27][28] and selectivity, 29-32 as well as chemical [33][34][35] or biochemical 36-38 activity. Chemical activity is of core importance in functional materials. Sensors, selective membranes, all sorts of electrochemical devices, from actuators to batteries or supercapacitors, supported catalysts or photoelectrochemical energy conversion cells are some important devices based on hybrid functional materials.Hybridization is a multifaceted strategy. In some cases, conducting organic polymers act just as a solid polymeric support for active species, whereas in other hybrid systems the activity of organic and inorganic species combines to reinforce or modify each other. But in every case ...

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Optoelectronic properties of polymer-nanocrystal composites active at near-infrared wavelengths

Cited by 29 publications

References 28 publications

Electronic and excitonic processes in multilayer organic light emitting devices incorporating PbSe quantum dots

Electronic and excitonic processes in multilayer organic light emitting devices incorporating PbSe quantum dots

Preparation and characterization of monodispersed PbSe nanocubes

Review—Organic-Inorganic Hybrid Functional Materials: An Integrated Platform for Applied Technologies

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