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Transferring the nanocrystals (NCs) from the laboratory environment toward practical applications has raised new challenges. In the case of NCs for display and lightning, the focus was on reduced Auger recombination and maintaining…

Core-shell CdSe/CdS nanocrystals are a very promising material for light emitting applications. Their solution-phase synthesis is based on surface-stabilizing ligands that makes them soluble in organic solvents, like toluene or chloroform.…

Nanoparticle (NP) arrays of noble metals strongly absorb light in the visible to infrared wavelengths through resonant interactions between the incident electromagnetic field and the metal's free electron plasma. Such plasmonic interfaces…

Mesoscale and Nanoscale Physics · Physics 2013-09-06 Miriam Israelowitz , Jennifer Amey , Tao Cong , Radhakrishna Sureshkumar

Stabilized FeSe thin films in ambient pressure with tunable superconductivity would be a promising candidate for superconducting electronic devices yet its superconducting transition temperature (Tc) is below 10 K in bulk materials. By…

CdS thin film samples were fabricated using spin coating technique on normal glass and conductive glass substrates and annealed at different temperatures. According to the XRD patterns of films prepared on normal glass substrates,…

Materials Science · Physics 2018-08-28 D. M. C. U. Dissanayake , J. S. T. Wickramasinghe , P. Samarasekara

A novel method to image charge is used to measure the diffusion coefficient of electrons in films of CdSe nanocrystals at room temperature. This method makes possible the study of charge transport in films exhibiting high resistances or…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 M. Drndic , R. Markov , M. V. Jarosz , M. G. Bawendi , M. A. Kastner , N. Markovic , M. Tinkham

CdTe and CdS are emerging as the most promising materials for thin film photovoltaics in the quest of the achievement of grid parity. The major challenge for the advancement of grid parity is the achievement of high quality at the same time…

The interaction of circularly polarized light with chiral matter and functional devices enables novel phenomena and applications. Recently, wafer-scale solid-state single-enantiomer carbon nanotube (CNT) films have become feasible and are…

A photodiode consisting of nanopillars of thin-film silicon p-i-n on an array of vertically aligned carbon nanotubes (CNTs) with a noncontinuous cathode electrode is demonstrated. The structure exploits the intrinsic enhancement of the CNTs…

Mercury-Sensitized Photo-Assisted Chemical Vapor Deposition (Hg-Photo-CVD) technique opens new possibilities for reducing thin film growth temperature and producing novel semiconductor materials suitable for the future generation of high…

Materials Science · Physics 2007-05-23 A. Barhdadi , S. Karbal , N. Mgafad , A. Benmakhlouf , M. Chafik El Idrissi , B. M. Aka

Silicon nanocrystals (Si NCs) have shown great promise for electroluminescent and photoluminescent applications. In order to optimize the properties of Si NC devices, however, electronic transport in Si NCs films needs to be thoroughly…

Mesoscale and Nanoscale Physics · Physics 2014-09-02 Ting Chen , Brian Skinner , Wei Xie , B. I. Shklovskii , Uwe R. Kortshagen

In this paper, we model the evolution and self-assembly of randomly oriented carbon nanotubes (CNTs), grown on a metallic substrate in the form of a thin film for field emission under diode configuration. Despite high output, the current in…

Materials Science · Physics 2010-04-14 N. Sinha , D. Roy Mahapatra , J. T. W. Yeow , R. V. N. Melnik , D. A. Jaffray

We report on thin-film processing improvements in the fabrication of superconducting quasiparticle-trap-assisted electrothermal-feedback transition-edge sensors (QETs) used in the design of Cryogenic Dark Matter Search (CDMS) detectors. The…

Materials Science · Physics 2014-10-13 John Mark Kreikebaum , Blas Cabrera , Jeff Yen , Paul Brink , Astrid Tomada , Matt Cherry , Betty Young

Metal/superconductor/semiconductor (Ag/HgBaCaCuO/CdSe) heterostructures have been successfully fabricated using pulse-electrodeposition technique. The electrochemical parameters are optimized and diffusion free growth of CdSe onto…

Superconductivity · Physics 2009-11-10 D. D. Shivagan , P. M. Shirage , S. H. Pawar

Highly sensitive and fast photodetector devices with CdSe quantum nanowires as active elements have been developed exploiting the advantages of electro- and wet-chemical routes. Bismuth nanoparticles electrochemically synthesized directly…

Materials Science · Physics 2015-07-20 Alexander Littig , Hauke Lehmann , Christian Klinke , Tobias Kipp , Alf Mews

Optical activation of material properties illustrates the potentials held by tuning light-matter interactions with impacts ranging from basic science to technological applications. Here, we demonstrate for the first time that composite…

Materials Science · Physics 2020-11-17 Kwang Jin Lee , Elke Beyreuther , Sohail A. Jalil , Sang Jun Kim , Lukas Eng , Chunlei Guo , Pascal Andre

This research for Eco-materials focuses on the improvement of photo response of titania thin films. The goal of this research is to find a suitable substrate for decreasing the band-gap of titania, to improve the microstructure and to seek…

Materials Science · Physics 2007-05-23 Wilfried Wunderlich , Nguyen Thi Hue , Sakae Tanemura

High-dielectric-constant CaCu3Ti4O12 (CCTO) thin films were prepared on Pt/Ti/SiO2/Si(100) substrates by pulsed-laser deposition. The 480 nm thick polycrystalline films have preferred orientation and show obvious crystallization on the…

Materials Science · Physics 2009-11-10 Liang Fang , Mingrong Shen , Wenwu Cao

CdTe-based thin film solar cell has been modeled and enumerated with a thin CuInTe2 (CIT) current booster layer. CdTe-based n-CdS/p-CdTe/p+-CIT/p++-WSe2 heterojunction device has been evaluated for the highest performance. It is revealed…

We present results for electronic transport measurements on large three-dimensional arrays of CdSe nanocrystals. In response to a step in the applied voltage, we observe a power-law decay of the current over five orders of magnitude in…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Nicole Y. Morgan , C. A. Leatherdale , M. Drndic , Mirna Vitasovic , Marc A. Kastner , Moungi Bawendi