Multicolored devices fabricated by direct lithography of colloidal nanocrystals

Qualtieri, Antonio; Martiradonna, Luigi; Stomeo, T.; Todaro, M. T.; Cingolani, R.; Vittorio, Massimo De

doi:10.1016/j.mee.2008.11.073

Cited by 14 publications

(9 citation statements)

References 24 publications

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“…Because of that, shell energy landscape strongly influences the electrons wavefunction ( Ψ e ) while preserving holes confinement. Colloidal CdSe/CdS DRs have already been demonstrated to show remarkable single‐photon polarization properties,38, 39 high room‐temperature PL quantum efficiency15, 40 and interesting compatibility with planar nanofabrication technologies 41–45. The DRs investigated in this work have been produced by a wet‐chemical seeded‐growth approach,15 a synthetic procedure that allows a precise control of the heterostructure geometrical parameters 16, 46.…”

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confidence: 99%

Non‐Blinking Single‐Photon Generation with Anisotropic Colloidal Nanocrystals: Towards Room‐Temperature, Efficient, Colloidal Quantum Sources

et al. 2013

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confidence: 99%

Non‐Blinking Single‐Photon Generation with Anisotropic Colloidal Nanocrystals: Towards Room‐Temperature, Efficient, Colloidal Quantum Sources

et al. 2013

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“…Nano- and micro-sized multicolour pixels characterized by a high colour definition and high emission tuneability have been fabricated by applying UVL and EBL on nanocomposites formed of red and green CdSe@ZnS NCs incorporated in SU-8 and PMMA, respectively by using chlorobenzene as common solvent. The combination of both the lithography techniques in subsequent re-alignments steps, the control of both the NC concentration and geometry of patterns localized in contiguous regions have allowed for achieving a finely tuning of the pixel emission [ 155 ].…”

Section: Patterning Towards Devices: Conventional and Unconventionmentioning

confidence: 99%

Colloidal Inorganic Nanocrystal Based Nanocomposites: Functional Materials for Micro and Nanofabrication

et al. 2010

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The unique size- and shape-dependent electronic properties of nanocrystals (NCs) make them extremely attractive as novel structural building blocks for constructing a new generation of innovative materials and solid-state devices. Recent advances in material chemistry has allowed the synthesis of colloidal NCs with a wide range of compositions, with a precise control on size, shape and uniformity as well as specific surface chemistry. By incorporating such nanostructures in polymers, mesoscopic materials can be achieved and their properties engineered by choosing NCs differing in size and/or composition, properly tuning the interaction between NCs and surrounding environment. In this contribution, different approaches will be presented as effective opportunities for conveying colloidal NC properties to nanocomposite materials for micro and nanofabrication. Patterning of such nanocomposites either by conventional lithographic techniques and emerging patterning tools, such as ink jet printing and nanoimprint lithography, will be illustrated, pointing out their technological impact on developing new optoelectronic and sensing devices.

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“…54 by dispersing a specific concentration of nano− crystals inside a negative high−resolution electron−beam re− sist after precipitation and re−dilution in methyl−isobutyl− ketone (MIBK) solvent. Ensembles of nanocrystals embed− ded in electronic resists can be easily patterned by means of traditional lithographic processes, since the presence of semiconductor clusters in the matrix does not significantly affect the sensitivity of the polymeric host and, at the same time, the emission properties of the nanocrystals are not in− fluenced by the interaction with the electron beam [55]. To obtain on average one nanocrystal inside a nanosized pillar of the NC/resist blend, direct e−beam patterning is employed [Figs.…”

Section: Localization Of Single Quantum Dotsmentioning

confidence: 99%

Recent advances on single photon sources based on single colloidal nanocrystals

Vittorio

Pisanello²,

Martiradonna

et al. 2010

Opto-Electronics Review

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Single colloidal quantum dots (QDs) are increasingly exploited as triggered sources of single photons. This review reports on recent results on single photon sources (SPS) based on colloidal quantum dots, whose size, shape and optical properties can be finely tuned by wet chemistry approach. First, we address the optical properties of different colloidal nanocrystals, such as dots, rods and dot in rods and their use as single photon sources will be discussed. Then, we describe different techniques for isolation and positioning single QDs, a major issue for fabrication of single photon sources, and various approaches for the embedding single nanocrystals inside microcavities. The insertion of single colloidal QDs in quantum confined optical systems allows one to improve their overall optical properties and performances in terms of efficiency, directionality, life time, and polarization control. Finally, electrical pumping of colloidal nanocrystals light emitting devices and of NC-based single photon sources is reviewed.

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Multicolored devices fabricated by direct lithography of colloidal nanocrystals

Cited by 14 publications

References 24 publications

Non‐Blinking Single‐Photon Generation with Anisotropic Colloidal Nanocrystals: Towards Room‐Temperature, Efficient, Colloidal Quantum Sources

Non‐Blinking Single‐Photon Generation with Anisotropic Colloidal Nanocrystals: Towards Room‐Temperature, Efficient, Colloidal Quantum Sources

Colloidal Inorganic Nanocrystal Based Nanocomposites: Functional Materials for Micro and Nanofabrication

Recent advances on single photon sources based on single colloidal nanocrystals

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