Journal ArticleDOI
An all-gas-phase approach for the fabrication of silicon nanocrystal light-emitting devices.
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TLDR
This all-gas-phase approach permits controlled deposition of dense, functional nanocrystal films suitable for application in electronic devices.Abstract:
We present an all-gas-phase approach for the fabrication of nanocrystal-based light-emitting devices. In a single reactor, silicon nanocrystals are synthesized, surface-functionalized, and deposited onto substrates precoated with a transparent electrode. Devices are completed by evaporation of a top metal electrode. The devices exhibit electroluminescence centered at a wavelength of λ = 836 nm with a peak external quantum efficiency exceeding 0.02%. This all-gas-phase approach permits controlled deposition of dense, functional nanocrystal films suitable for application in electronic devices.read more
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Plasma nanoscience: from nano-solids in plasmas to nano-plasmas in solids
TL;DR: The unique plasma-specific features and physical phenomena in the organization of nanoscale soild-state systems in a broad range of elemental composition, structure, and dimensionality are critically reviewed in this paper.
Journal ArticleDOI
Plasma Nanoscience: from Nano-Solids in Plasmas to Nano-Plasmas in Solids
TL;DR: In this paper, a unified conceptual framework based on the control of production, transport, and self-organization of precursor species is introduced and a variety of plasma-specific non-equilibrium and kinetics-driven phenomena across the many temporal and spatial scales is explained.
Journal ArticleDOI
Nonthermal Plasma Synthesis of Nanocrystals: Fundamental Principles, Materials, and Applications
Uwe Kortshagen,R. Mohan Sankaran,Rui N. Pereira,Rui N. Pereira,Steven L. Girshick,Jeslin J. Wu,Eray S. Aydil +6 more
TL;DR: The fundamentals of nanocrystal formation in plasmas are discussed, practical implementations of plasma reactors are reviewed, the materials that have been produced with nonthermal plAsmas and surface chemistries that have be developed are surveyed, and an overview of applications of plasma-synthesized nanocrystals is provided.
Journal ArticleDOI
Multicolor Silicon Light-Emitting Diodes (SiLEDs)
Florian Maier-Flaig,Julia Rinck,Moritz Stephan,Tobias Bocksrocker,Michael Bruns,Christian Kübel,Annie K. Powell,Geoffrey A. Ozin,Geoffrey A. Ozin,Uli Lemmer +9 more
TL;DR: It is demonstrated that size-separation of ncSi leads to drastically improved lifetimes of the devices and much less sensitivity of the emission wavelength to the applied drive voltage.
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Recent advances in quantum dot-based light-emitting devices: Challenges and possible solutions
Zhiwen Yang,Mengyu Gao,Weijie Wu,Xuyong Yang,Xiao Wei Sun,Jianhua Zhang,Hung-Chia Wang,Ru-Shi Liu,Ru-Shi Liu,Chang-Yeol Han,Heesun Yang,Wanwan Li +11 more
TL;DR: In this paper, a review of the development of organic LEDs, inorganic LEDs, and QLEDs is presented, and the challenges of QDs for high-efficiency LEDs are discussed.
References
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Journal ArticleDOI
Electroluminescence from single monolayers of nanocrystals in molecular organic devices
TL;DR: A hybrid light-emitting diode (LED) that combines the ease of processability of organic materials with the narrow-band, efficient luminescence of colloidal quantum dots (QDs) is demonstrated and a 25-fold improvement in luminescent efficiency is observed.
Journal ArticleDOI
Electroluminescence from CdSe quantum‐dot/polymer composites
TL;DR: The electroluminescence of CdSe nanocrystallites (quantum dots) incorporated into thin films (1000 A) of polyvinyl carbazole (PVK) and an oxadiazole derivative (t‐Bu‐PBD) and sandwiched between ITO and Al electrodes was studied in this article.
Journal ArticleDOI
High-yield plasma synthesis of luminescent silicon nanocrystals.
TL;DR: A scaleable single-step synthesis process for luminescent silicon nanocrystals based on a low-pressure nonthermal plasma is reported, paving the way for a simple, high-yield synthesis approach to this field.
Journal ArticleDOI
Determination of Nanocrystal Sizes: A Comparison of TEM, SAXS, and XRD Studies of Highly Monodisperse CoPt3 Particles
Holger Borchert,Elena V. Shevchenko,Aymeric Robert,Ivo Mekis,Andreas Kornowski,Gerhard Grübel,Horst Weller +6 more
TL;DR: This study investigates colloidally prepared, highly monodisperse CoPt3 nanoparticles by transmission electron microscopy, small-angleX-ray scattering (SAXS), and powder X-ray diffraction (XRD), and examines to which extent agreement is obtained by the different techniques when applied to small nanocrystals in the size range below 10 nm.
Journal ArticleDOI
Electroluminescence from a mixed red-green-blue colloidal quantum dot monolayer.
TL;DR: Light emitting devices (LEDs) with a broad spectral emission generated by electroluminescence from a mixed-monolayer of red, green, and blue emitting colloidal quantum dots (QDs) in a hybrid organic/inorganic structure are demonstrated.