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3,159 Newest Publications about the topic doping

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Fluorescence and room temperature activity of Y2O3:(Eu3+,Au3+)/palygorskite nanocomposite

25-11-2014 | Xi He; Huaming Yang, Dalton Transactions, 2014

The fluorescence and room temperature activity of palygorskite supported Y2O3:(Eu3+,Au3+) nanocomposite were investigated to design a fluorescence indicated catalyst. The effects of Au3+ doping on the structure and surface properties of host material were systematically characterized. The ...

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Enhancement of thermoelectric properties by Na doping in Te-free p-type AgSbSe2

25-11-2014 | Songting Cai; Zihang Liu; Jianyong Sun; Rui Li; Weidong Fei; Jiehe Sui, Dalton Transactions, 2014

AgSbSe2 possesses extremely low thermal conductivity and high Seebeck coefficient, but the low electronic conductivity leads to a low ZT value. In this paper, Na is used to substitute Sb to improve the electronic conductivity. The results show that Na doping not only improves the power factor ...

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Doping and Theory: general discussion

25-11-2014 | Philip Davies; Irena Kratochvílová; Chris Ewels; Tariq Aqeel; Nazario Martin; Vladimir Fal'ko; Toshiaki Enoki; Anton ..., Faraday Discussions, 2014

Faraday Discuss., 2014, Advance ArticleDOI: 10.1039/C4FD90044H, Discussion Philip Davies, Irena Kratochvilova, Chris Ewels, Tariq Aqeel, Nazario Martin, Vladimir Fal'ko, Toshiaki Enoki, Antonio Rodriguez-Fortea, Katsumi Kaneko, Ayse Turak, Carlo Buono, Valeri Kovalenko, Pulickel Ajayan, Malcolm ...

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Bottom‐Up Synthesis of Chemically Precise Graphene Nanoribbons

21-11-2014 | Akimitsu Narita, Xinliang Feng, Klaus Müllen, The Chemical Record, 2014

Abstract In this article, we describe our chemical approach, developed over the course of a decade, towards the bottom‐up synthesis of structurally well‐defined graphene nanoribbons (GNRs). GNR synthesis can be achieved through two different methods, one being a solution‐phase process based on ...

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Enhanced optical functionalities in silica by doping with Au‐based nanostructures

21-11-2014 | Tiziana Cesca, Boris Kalinic, Chiara Maurizio, Carlo Scian, Giancarlo Battaglin, Paolo Mazzoldi, Giovanni Mattei, physica status solidi (b), 2014

The sensitization mechanism of Er ions by sub‐nanometric Au aggregates formed in silica by sequential ion implantation has been investigated by room temperature photoluminescence characterizations. Er–Au co‐implanted samples with different Au and Er relative concentrations have been studied. ...

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Solar Cells: High Efficiency Cu2ZnSn(S,Se)4 Solar Cells by Applying a Double In2S3/CdS Emitter (Adv. Mater. 44/2014)

21-11-2014 | Jeehwan Kim, Homare Hiroi, Teodor K. Todorov, Oki Gunawan, Masaru Kuwahara, Tayfun Gokmen, Dhruv Nair, Marinus Hopst ..., Advanced Materials, 2014

On page 7427, J. Kim, H. Hiroi, T. K. Todorov, D. B. Mitzi, and co‐workers report high‐efficiency Cu2ZnSn(S,Se)4 solar cells by applying In2S3/CdS double emitters. This new structure offers a high doping concentration within the Cu2ZnSn(S,Se)4 solar cells, resulting in substantial enhancement ...

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Structural, Electronic, and Optical Properties of Eu-Doped BiOX (X = F, Cl, Br, I): A DFT+U Study

21-11-2014 | Zong-Yan Zhao; Wen-Wu Dai, Inorganic Chemistry, 2014

In order to understand the photophysical properties and explain the experimental observations of Eu-doped BiOX (X = F, Cl, Br, I), the crystal structure, electronic structure, and optical properties of pure BiOX and Eu-doped BiOX have been calculated using the DFT+U method. By Eu doping, the band ...

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Perspectives of enhancement of p‐type conductivity in ZnO nanowires

19-11-2014 | Tamar Tchelidze, Tamaz Kereselidze, Teimuraz Nadareishvili, physica status solidi (c), 2014

Abstract Semiconductor nanowires are believed to act as key elements in future nanoscaled optoelectronic devices, as they offer intriguing electrical and optoelectronic properties. However, the future of any semiconductor nanowire technology will essentially rely on their doping capability. ...

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Charge transfer in and conductivity of molecularly doped thiophene‐based copolymers

19-11-2014 | Fatemeh Ghani, Andreas Opitz, Patrick Pingel, Georg Heimel, Ingo Salzmann, Johannes Frisch, Dieter Neher, Argiri Tsa ..., Journal of Polymer Science Part B: Polymer Physics, 2014

ABSTRACT The electrical conductivity of organic semiconductors can be enhanced by orders of magnitude via doping with strong molecular electron acceptors or donors. Ground‐state integer charge transfer and charge‐transfer complex formation between organic semiconductors and molecular dopants ...

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Oxyanions in perovskites: from superconductors to solid oxide fuel cells

18-11-2014 | C. A. Hancock; J. M. Porras-Vazquez; P. J. Keenan; P. R. Slater, Dalton Transactions, 2014

In this article we review work on oxyanion (carbonate, borate, nitrate, phosphate, sulphate, silicate) doping in perovskite materials beginning with early work on doping studies in superconducting cuprates, and extending to more recent work on doping into perovskite-type solid oxide fuel cell ...

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