Journal ArticleDOI
Recent developments on recycling end-of-life flat panel displays: A comprehensive review focused on indium
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In this paper, a review of the most recent technologies for indium recovery from waste flat panel displays is provided, which is different from the other fractions obtained after primary dismantling (such as indium fractionation).Abstract:
In this paper, a review of the most recent technologies for indium recovery from waste flat panel displays is provided. Differently from the other fractions obtained after primary dismantling (such...read more
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Potential substitutes for critical materials in white LEDs: Technological challenges and market opportunities
Pierre Gaffuri,Elena Stolyarova,Daniel Llerena,Estelle Appert,Marianne Consonni,Stéphane Robin,Vincent Consonni +6 more
TL;DR: The present approach addresses the transdisciplinary problem of the reduction and substitution of critical materials in functional devices intended for consumers, and can be generalized to other energy-related materials and devices.
Journal ArticleDOI
VUV and UV photoluminescence of green emitting Sr2P2O7:Tb3+ phosphors for PDP applications
TL;DR: Tb3+-activated Sr2P2O7 phosphor samples were prepared via the co-precipitation route as discussed by the authors, and the phase structure and vibrational characteristics of the synthesized phosphors were confirmed by X-ray diffraction and Fourier transform-infrared spectroscopy, respectively.
Journal ArticleDOI
Thermotropic liquid crystals with low-dimensional carbon allotropes
Adam P. Draude,Ingo Dierking +1 more
Abstract: As display devices based on liquid crystals have matured over the last decades, liquid crystal research has shifted its priorities in slightly different directions, such as sensors, photonics, nanotechnology and even more biologically related fields like drug delivery. This implied a change of emphasis in the development of novel materials, of which a completely new class of liquid crystal based composites emerged, that of nanoparticle-dispersed liquid crystals. The underlying ideas were to add functionality, while maintaining switchability, and the exploitation of liquid crystal self-organisation to build hierarchical nanostructures. Of particular interest for applications are dispersions of carbon nanomaterials, such as fullerenes, nanotubes and the graphene variants, due to their interactions with conventional liquid crystals. While such systems have been investigated for the past two decades, we concentrate in this review on the effects of dimensionality of the dispersed carbon nanoparticles, which goes hand in hand with the more recent developments in this field. Examples are the doping of 0D fullerenes in liquid crystals and implications for Blue Phase stability, or 1D nanotubes in nematic and ferroelectric liquid crystals, questions of dispersibility and applications as alignment media in ITO-free devices. Graphene (2D) and especially graphene oxide are mainly investigated for their formation of lyotropic liquid crystals. We here discuss the more recent aspects of dispersion in thermotropics.
Journal ArticleDOI
Carbon Allotropes as ITO Electrode Replacement Materials in Liquid Crystal Devices
TL;DR: In this article, the main contenders for new electrode technologies are discussed with an emphasis placed on carbon-based materials for liquid crystal displays, including composite approaches, and the advantages and disadvantages of ITO-free technologies with application examples given.
Journal ArticleDOI
Recycling of liquid crystals from e-waste
Ana Blanco Barrera,Corinne Binet,F. Dubois,Pierre-Alexandre Hébert,Philippe Supiot,C Foissac,Ulrich Maschke +6 more
TL;DR: In this paper , an orderly, manual LCD dismantling line is put into operation for differentiated recycling of electronic boards, cold cathode lamps that may contain mercury, polymers, metals, and other valuable materials.
References
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Journal ArticleDOI
Recovery of indium from TFT and CF glasses of LCD wastes using NaOH-enhanced sub-critical water
Hiroyuki Yoshida,Hiroyuki Yoshida,Shamsul Izhar,Shamsul Izhar,Eiichiro Nishio,Yasuhiko Utsumi,Nobuaki Kakimori,Feridoun Salak Asghari +7 more
TL;DR: In this paper, the effect of basic materials and their concentrations in sub-critical water on indium recovery was tested and it was shown that NaOH showed the largest recovery of indium from both CF and TFT glasses and reduced the reaction temperature.
Journal ArticleDOI
Indium recovery from In-Sn-Cu-Al mixed system of waste liquid crystal display panels via acid leaching and two-step electrodeposition
TL;DR: Fe feasibility for concurrent In leaching and Sn precipitation was explored based on the unique Sn species' dissolution and precipitation behavior during acid leaching, and the application of two-step electrodeposition enabled 95.32% extraction of Cu and deposition of In with a purity over 99 wt% at respective potential.
Journal ArticleDOI
Chelant-induced reclamation of indium from the spent liquid crystal display panels with the aid of microwave irradiation
Hiroshi Hasegawa,Ismail M.M. Rahman,Ismail M.M. Rahman,Yuji Egawa,Hikaru Sawai,Zinnat A. Begum,Teruya Maki,Satoshi Mizutani +7 more
TL;DR: A new technique for the reclamation of indium from the unground LCD-waste using aminopolycarboxylate chelants (APCs) as the solvent in a hyperbaric environment and at a high-temperature.
Journal ArticleDOI
Incorporating Liquid Crystal Display (LCD) Glass Waste as Supplementary Cementing Material (SCM) in Cement Mortars-Rationale Based on Hydration, Durability, and Pore Characteristics
TL;DR: It was found that LGP particles lead to appreciable strength gain at all ages in comparison with control mortar, especially significant strength gain of 18% was observed at 28-day, and the durability has been found improved.
Journal ArticleDOI
A method for manual disassembly analysis to support the ecodesign of electronic displays
TL;DR: In this paper, the authors proposed a method for in-depth analysis of dismantling practices of electronic displays in order to obtain useful data for product design, which can be used as empirical evidence to support the development of quantitative ecodesign strategies.