Indium tin oxide

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  • Benzenethiol Ligand Study

    during the purification processes was also found to be improved. I. Introduction Colloidal quantum dots (QDs) are considered as promising light emitting materials owing to their superior optical properties such as broad absorption, narrow emission bandwidth, and easy control of the emission peak wavelength.[1–5] The performances of colloidal QD light emitting diodes (QD-LED) are rapidly improving in terms of brightness and external quantum efficiency with the development of high quantum yield QD and with the improvement of charge transfer layers. For example, metal oxide charge transfer materials such as ZnO nanoparticles and TiOx films contributed to the recent improvement of QD EL.[6,7] The ligands of QD also play an important role in determining the EL performance.[8–12] Typically QDs are capped by various ligands such as oleic acid (OA), oleyamine (OAm), trioctylphosphine (TOP), and trioctylphosphine oxide (TOPO). These long chain carbon ligands help QD to disperse in solvents, but they function as the insulating barriers and block the access of charges in and out of the QDs.[8–11] Ligand exchange with conductive surfactant molecules can improve the mobility of QD layers.[12] The hybridization of QDs with conducting and long-chain block copolymers were used to enhance the carrier injection and stability.[13–14] In this study, OA and TOP ligands of CdSe@ZnS are exchanged by short conductive ligand, benzenethiol (BT). The performance and stability of QD-LED in the…

    Words: 985 - Pages: 4
  • Synthesis Of L-Ion Battery

    In recent years, modern Li-ion batteries (LIBs) have become ubiquitous power source for a variety of applications such as laptops, mobile phone, and digital camera to electric vehicles, owing to their high power density, high energy density, and long cycle life.1–3 However, there are still many critical challenge to increasing the energy, power density, and improved cycling stability.4–6 In particular, selecting noble electrode materials is the hottest topics in the LIB field. Among them, bulk…

    Words: 1257 - Pages: 6
  • Naocrystal Thin Film Transistors Lab Report

    performance of NC TFTs is the ligand exchange approach,2,3 replacing the long, insulating native ligands by short and more conductive molecules.1–6 Another way to decrease the inter distance, while keeping the NC size the same, is to anneal the NC solid at temperatures well below the melting temperature of NC cores.7 Metal oxide semiconductors have been intensively investigated for applications in electronics. Among many metal oxide semiconductors, indium oxide (In2O3) has been considered as a…

    Words: 925 - Pages: 4
  • How To Save Our Planet Essay

    We have one planet to live on. Have you ever thought of that? We only have this one giant rock, hurtling through the sky at speeds too fast for us to even comprehend; and we have nowhere else to go. Yet, we still take advantage of our home. We pollute it, mine mountains, clear-cut forests and think nothing of it. In everyday life people normally like to keep their home clean and tidy, they may buy insurance to help them buy a new one if something happens to their old one. Earth is our home, yet…

    Words: 1575 - Pages: 7
  • Decision Tree Analysis In Chemistry

    The powder do not affect the chemical structure of the magnesium in the fire extinguishing process. However, a protective coat of magnesium oxide is formed on all the surface of the magnesium as it reacts very fast with air. This layer makes it hard for it continue burning. However, in case water is used when removing the residues even after several days, the fire may reignite. The water will firstly expose the surface of the magnesium residues to reaction and react with it (magnesium) to…

    Words: 956 - Pages: 4
  • Taking A Look At Acid Rain

    1.1 Introduction/ what is Acid Rain? Acid rain, or acid precipitation is a term used to describe any form of precipitation with a pH of less than 5.6. In recent years, the effects of acid rain are being experienced on a global scale with widespread environmental effects. Primarily, acid rain is caused by emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) from the combustion of fossil fuels. However, even pure rainwater is slightly acidic (pH of 5.6-6.5) due to the reaction between H2O…

    Words: 1330 - Pages: 5
  • Raman Spectra Analysis

    demands of the continuous casting. In order to coordinate the properties of mold flux, many oxides are used in the mold flux – especially the similar oxides such as Na2O and Li2O, and MgO and CaO. This can micro – adjust the properties of mold flux. The distributions of silicate anionic species (Qn) were obviously different whereas the equimolar substitution of CaO for MgO (and Na2O for Li2O) are at a fixed NBO/T. The degree of polymerization of molten slag with a same NBO/T is same except the…

    Words: 1530 - Pages: 6
  • How Does Agnps Enhance Luminol Fluorescence

    Recent research shows that AgNPs enhance luminol fluorescence and chemiluminescence by acting as a catalyst with hydrogen peroxide. When AgNPs interact with hydrogen peroxide they cause the peroxide to degrade into superoxide and hydroxyl radical, which also react with luminol to form 3-aminophthalate (Equations 2-5) [13]. The further degradation of hydrogen peroxide into other reactive oxygen species promotes higher fluorescence intensity. Figure 5 shows the increased fluorescence intensity…

    Words: 920 - Pages: 4
  • Soil Characterisation Essay

    that they had distinct soil parameters in terms of total organic carbon (TOC), Fe oxide, Al oxide, pH which have been observed as important controllers for bioaccessibility of As, Cd and Pb reported in previous chapters. MGA soils contained a high amount of TOC (8.37 %), Fe oxide (12.49 g kg-1), Al oxide (12.6 g kg-1) whilst few TOC (1.48 %), Fe oxide (0.64 g kg-1) and…

    Words: 843 - Pages: 4
  • Photocatalyst Analysis Of Tio2

    Since the water splitting reaction using semiconductor electrode reported by Fujishima et al. in 1972 [1], there is increasing interest in the development of metal oxide photocatalysts for environmentally friendly applications such as air purification [2], hydrogen production via water splitting [3] and the removal of organic molecules from water [4]. Recently, photocatalyst thin film has aroused growing interests instead of a powder type of photocatalyst. Photocatalyst film can be deposited…

    Words: 793 - Pages: 4
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