نتایج جستجو برای: doped zns

تعداد نتایج: 50881  

Journal: :Nano letters 2009
Vanessa Wood Jonathan E Halpert Matthew J Panzer Moungi G Bawendi Vladimir Bulović

We present a novel technique for room temperature, solution-based fabrication of alternating current thin-film electroluminescent (AC-TFEL) devices using phosphor-doped nanocrystals. Synthesis for stable ZnSe/ZnS:Mn/ZnS nanocrystals that exhibit a quantum yield of 65 +/- 5% is outlined, and their electroluminescence is demonstrated in structures consisting of only wide band gap ceramic layers. ...

1996
Alan L. Huston Brian L. Justus Tommy L. Johnson

We describe an optically transparent, laser heated, thermoluminescent glass dosimeter that is used for fiber-optic-coupled remote radiation monitoring. The glass consists of ZnS nanocrystallites embedded in a Vycor glass host, doped with Cu and Nd ions. An 807 nm, 1 W GaAlAs laser is used to rapidly heat microscopic regions, surrounding the Nd ions, in the composite glass to stimulate blue-gree...

2012
Li Cao Sheng-Tao Yang Xin Wang Pengju G. Luo Jia-Hui Liu Sushant Sahu Yamin Liu Ya-Ping Sun

Carbon-based "quantum" dots or carbon dots are surface-functionalized small carbon nanoparticles. For bright fluorescence emissions, the carbon nanoparticles may be surface-doped with an inorganic salt and then the same organic functionalization. In this study, carbon dots without and with the ZnS doping were prepared, followed by gel-column fractionation to harvest dots of 40% and 60% in fluor...

Journal: :Dalton transactions 2015
Siddhartha Sankar Boxi Santanu Paria

Arsenic poisoning from drinking water has been an important global issue in recent years. Because of the high level toxicity of arsenic to human health, an easy, inexpensive, low level and highly selective detection technique is of great importance to take any early precautions. This study reports the synthesis of Ag doped hollow CdS/ZnS bi-layer (Ag-h-CdS/ZnS) nanoparticles for the easy fluoro...

2014
Devulapalli Amaranatha Reddy Deok Hyeon Kim Seuk Joo Rhee Bo Wha Lee Chunli Liu

Mg-doped ZnS hierarchical spheres have been synthesized via hydrothermal method using mixed solvents of ethylenediamine and DI water without any surface-active agent. The surface morphology and microstructure studies revealed that the hierarchical spheres were consisted of many well-aligned nanosheets with width 10 nm and length about 50 ~ 100 nm. X-Ray diffraction results show that the ZnS:Mg ...

Journal: :Applied Physics A 2022

This work contributes to the discussion on influence of back contact electrical properties Cu2ZnSnS4 (CZTS)-based solar cells. Devices with noble metals (Au, Ag and Pt) such as FTO/ZnS/CZTS/Au, FTO/ZnS/CZTS/Pt FTO/ZnS/CZTS/Ag were investigated by means current voltage characteristic in dark (FTO = fluorine-doped tin oxide). The originality this is that all active layers (absorbing buffer layers...

2015
Daysi Diaz-Diestra Juan Beltran-Huarac Dina P. Bracho-Rincon José A. González-Feliciano Carlos I. González Brad R. Weiner Gerardo Morell

ABSTRACT We report here the versatility of Mn-doped ZnS quantum dots (ZnS:Mn QDs) synthesized in aqueous medium for generating reactive oxygen species and for detecting cells. Our experiments provide evidence leading to the elimination of Cd-based cores in CdSe/ZnS systems by substitution of Mn-doped ZnS. Advanced electron microscopy, X-ray diffraction, and optical spectroscopy were applied to ...

Journal: :Nanoscale 2013
Yerok Park Chiwan Koo Hsiang-Yun Chen Arum Han Dong Hee Son

We report a ratiometric temperature imaging method based on Mn luminescence from Mn-doped CdS-ZnS nanocrystals (NCs) with controlled doping location, which is designed to exhibit strong temperature dependence of the spectral lineshape while being insensitive to the surrounding chemical environment. Ratiometric thermometry on the Mn luminescence spectrum was performed by using Mn-doped CdS-ZnS c...

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