نتایج جستجو برای: cadmium sulfide

تعداد نتایج: 40382  

Journal: :ACS nano 2011
Xinlong Xu Yanyuan Zhao Edbert Jarvis Sie Yunhao Lu Bo Liu Sandy Adhitia Ekahana Xiao Ju Qike Jiang Jianbo Wang Handong Sun Tze Chien Sum Cheng Hon Alfred Huan Yuan Ping Feng Qihua Xiong

Intrinsic defects such as vacancies, interstitials, and anti-sites often introduce rich luminescent properties in II-VI semiconductor nanomaterials. A clear understanding of the dynamics of the defect-related excitons is particularly important for the design and optimization of nanoscale optoelectronic devices. In this paper, low-temperature steady-state and time-resolved photoluminescence (PL)...

Journal: :Journal of the American Chemical Society 2014
Dandan Zhang Andrew B Wong Yi Yu Sarah Brittman Jianwei Sun Anthony Fu Brandon Beberwyck A Paul Alivisatos Peidong Yang

As a cation-deficient, p-type semiconductor, copper sulfide (Cu(2-x)S) shows promise for applications such as photovoltaics, memristors, and plasmonics. However, these applications demand precise tuning of the crystal phase as well as the stoichiometry of Cu(2-x)S, an ongoing challenge in the synthesis of Cu(2-x)S materials for a specific application. Here, a detailed transformation diagram of ...

2009
N. Kakuta J. M. White A. Campion A. J. Bard M. A. Fox S. E. Webber

The Journal of Physical Chemistry is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Surface analysis of semiconductor-incorporated polymer systems. 1. Nafion and cadmium sulfide-Nafion N. Kakuta, J. M. White, A. Campion, A. J. Bard, M. A. Fox, and S. E. Webber J. Phys. Chem., 1985, 89 (1), 48-52• DOI: 10.1021/j100247a014 • Publication Date (Web): 01...

2017
M. Cadene M. Rolland M. J. M. Abadie

2014 Photovoltaic devices have been obtained by a direct polymerization of undoped (or p-type doped) thin film (CH)x layer onto a polycrystalline cadmium sulfide film. The morphology of the contact is observed by S.E.M. microscopy. The electrical characteristics of this device are studied in the dark or under illumination. The main result, at AM1, 100 mW/cm2 with doped (CH)x correspond to 0.5 p...

Journal: :Small 2006
Yanhong Zhang Yongming Chen Haijun Niu Mingyuan Gao

A one-dimensional assembly of cadmium sulfide (CdS) nanoparticles was prepared by using functionalized polymers with pendant Fréchet-type dendritic wedges of different generation. The novel dendronized polymers acted as both nanoreactors for the formation of CdS nanoparticles and a template to arrange the nanoparticles into a necklace. The polymers of different dendron generation were applied t...

2014
Valentyn Smyntyna Bogdan Semenenko Valentyna Skobeeva Nikolay Malushin

This paper presents the results of the research on the luminescence of cadmium sulfide nanocrystals (NCs) synthesized by colloid chemistry in a gelatinous matrix. The photostimulation of the short-wavelength emission band with λmax = 480 nm has been detected. It is shown that the determining factor of the photostimulation effect is the adsorption of the water molecules on the surface of NC. The...

2009
A. Sobczynski A. J. Bard A. Campion M. A. Fox T. Mallouk S. E. Webber J. M. White A. Fox M. White

Journal of Physical Chemistry is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Photoassisted hydrogen generation: platinum and cadmium sulfide supported on separate particles A. Sobczynski, A. J. Bard, A. Campion, M. A. Fox, T. Mallouk, S. E. Webber, and J. M. White J. Phys. Chem., 1987, 91 (12), 3316-3320 • DOI: 10.1021/j100296a041 Downloaded from...

2012
Woojin Lee Hoechang Kim Dae-Ryong Jung Jongmin Kim Changwoo Nahm Junhee Lee Suji Kang Byungho Lee Byungwoo Park

The effects of surface passivation on the photoluminescence (PL) properties of CdS nanoparticles oxidized by straightforward H2O2 injection were examined. Compared to pristine cadmium sulfide nanocrystals (quantum efficiency ≅ 0.1%), the surface-passivated CdS nanoparticles showed significantly enhanced luminescence properties (quantum efficiency ≅ 20%). The surface passivation by H2O2 injectio...

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