Completely transparent ohmic electrode on p-type AlGaN for UV LEDs with core-shell Cu@alloy nanosilk network (Conference Presentation)

2016 ◽  
Author(s):  
Duanjun Cai ◽  
Huachun Wang ◽  
Youyang Huang ◽  
Chenping Wu ◽  
Xiaohong Chen ◽  
...  
Keyword(s):  
Core Shell ◽  
Cu Alloy ◽  
P Type ◽  
Uv Leds

Adjustable electrical characteristics in hybrid Si/PEDOT:PSS core/shell nanowire hetero-junctions

2017 ◽  
Vol 5 (16) ◽  
pp. 3932-3936 ◽  
Author(s):  
Wenhui Lu ◽  
Shuai Zhang ◽  
Enqi Dai ◽  
Bin Miao ◽  
Yiran Peng ◽  
...  
Keyword(s):  
Core Shell ◽  
Electrical Characteristics ◽  
Ohmic Behavior ◽  
P Type

Si/PEDOT:PSS core/shell nanowire hetero-junctions with adjustable electrical characteristics are reported. They exhibit an ohmic behavior ascribed to p-type Si/PEDOT:PSS, whereas n-type Si/PEDOT:PSS displays a rectifying nature.

Preparation and optical properties of silica@Ag–Cu alloy core-shell composite colloids

2007 ◽  
Vol 180 (4) ◽  
pp. 1291-1297 ◽  
Author(s):  
Jianhui Zhang ◽  
Huaiyong Liu ◽  
Zhenlin Wang ◽  
Naiben Ming
Keyword(s):  
Optical Properties ◽  
Core Shell ◽  
Cu Alloy ◽  
Shell Composite

The Annealing Effect on Optical Properties of Silver Copper Alloy Films

2013 ◽  
Vol 320 ◽  
pp. 329-335
Author(s):  
Guang Yang ◽  
Ji Zhou
Keyword(s):  
Magnetron Sputtering ◽  
Copper Alloy ◽  
Annealing Temperature ◽  
Effective Medium Theory ◽  
Annealing Effect ◽  
Medium Theory ◽  
Alloy Films ◽  
Silver Copper ◽  
Cu Alloy ◽  
P Type

In this paper, the dielectric functions of Ag-30.3at.%Cu alloy films upon the annealing effect were investigated by variable angle spectroscopy ellipsometry (VASE). The silver copper alloy films were deposited onto p-type silicon (100) substrate by direct current (DC) magnetron sputtering. With the increase of annealing temperature from 100 °C to 300 °C, the image part of the permittivity for Ag-30.3at.%Cu is significantly decreased in the wavelength below ~500 nm. The structure and surface topography of the alloy films were characterized using high resolution scanning electron microscopy (HR-SEM) and X-ray diffraction (XRD). The effective medium theory (EMA) has been utilized for the treating of surface roughness. The dielectric functions can be manipulated by changing the annealing temperature. Key words: Dielectric functions; silver copper alloy films; magnetron sputtering

Electronic doping-enabled transition from n- to p-type conductivity over Au@CdS core–shell nanocrystals toward unassisted photoelectrochemical water splitting

2019 ◽  
Vol 7 (40) ◽  
pp. 23038-23045 ◽  
Author(s):  
Rongrong Pan ◽  
Jia Liu ◽  
Yuemei Li ◽  
Xinyuan Li ◽  
Erhuan Zhang ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Cation Exchange ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Core Shell ◽  
Type Conductivity ◽  
Hybrid Nanocrystals ◽  
Novel Strategy ◽  
Electronic Doping ◽  
P Type

Here we show a novel strategy for tailoring the synergistic electrical properties of metal@semiconductor hybrid nanocrystals (HNCs) based on cation exchange-enabled electronic doping.

Phosphorus-Doped p-Type ZnS Nanowires and their Photodetecting Applications Based on Device Construction

2016 ◽  
Vol 42 ◽  
pp. 65-72 ◽  
Author(s):  
Xi Wei Zhang ◽  
Dan Hu ◽  
Dan Meng ◽  
Zhen Jie Tang ◽  
Zhi Wang
Keyword(s):  
High Performance ◽  
Uv Light ◽  
Hole Concentration ◽  
Chemical Deposition ◽  
Core Shell ◽  
Light Illumination ◽  
Chemical Deposition Method ◽  
P Type ◽  
Phosphorus Doped ◽  
Type Conduction

Phosphorus-doped p-type ZnS NWs were synthesized by chemical deposition method. The as-synthesized NWs shows obvious p-type conduction with a hole concentration of 8.35 × 1017 cm-3. ZnS-Si core-shell nanoheterojunction was fabricated by depositing Si thin film on the surface of ZnS NWs through a sputtering method. The core-shell nanostructure exhibited excellent photoresponse to white light and UV light. Under UV light illumination, a high performance with a responsibility of ~ 0.14 × 103 AW-1, a gain of ~ 0.69 × 103 and a detectivity of ~ 1.2 × 1010 cmHz1/2W-1 were obtained based on the ZnS-Si core-shell nanoheterojunction. This new nanostructure is expected to play an important role in the next-generation optoelectronic devices.

scholarly journals Unravelling the origin of the giant Zn deficiency in wurtzite type ZnO nanoparticles

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Adèle Renaud ◽  
Laurent Cario ◽  
Xavier Rocquefelte ◽  
Philippe Deniard ◽  
Eric Gautron ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Charge Carriers ◽  
Zn Deficiency ◽  
Core Shell ◽  
Bulk Materials ◽  
Nitrogen Doped ◽  
The Core ◽  
Zinc Peroxide ◽  
P Type

Abstract Owing to its high technological importance for optoelectronics, zinc oxide received much attention. In particular, the role of defects on its physical properties has been extensively studied as well as their thermodynamical stability. In particular, a large concentration of Zn vacancies in ZnO bulk materials is so far considered highly unstable. Here we report that the thermal decomposition of zinc peroxide produces wurtzite-type ZnO nanoparticles with an extraordinary large amount of zinc vacancies (>15%). These Zn vacancies segregate at the surface of the nanoparticles, as confirmed by ab initio calculations, to form a pseudo core-shell structure made of a dense ZnO sphere coated by a Zn free oxo-hydroxide mono layer. In others terms, oxygen terminated surfaces are privileged over zinc-terminated surfaces for passivation reasons what accounts for the Zn off-stoichiometry observed in ultra-fine powdered samples. Such Zn-deficient Zn1-xO nanoparticles exhibit an unprecedented photoluminescence signature suggesting that the core-shell-like edifice drastically influences the electronic structure of ZnO. This nanostructuration could be at the origin of the recent stabilisation of p-type charge carriers in nitrogen-doped ZnO nanoparticles.

GaN based UV-LEDs with Ni/Au Nanomeshes as Transparent p-type Electrodes

2019 ◽  
Vol 216 (4) ◽  
pp. 1800684 ◽  
Author(s):  
Moheb Sheikhi ◽  
Houqiang Xu ◽  
Jie'an Jiang ◽  
Sudong Wu ◽  
Xi Yang ◽  
...  
Keyword(s):  
P Type ◽  
Uv Leds
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