scholarly journals Electrical properties and charge compensation mechanisms of Cr-doped rutile, TiO2

2021 ◽  
Author(s):  
Yun Dang ◽  
Xin Li Phuah ◽  
Han Wang ◽  
Bo Yang ◽  
Haiyan Wang ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Oxygen Vacancy ◽  
Electronic Conductivity ◽  
Charge Compensation ◽  
Rutile Tio2 ◽  
Type Conductivity ◽  
Co Doping ◽  
High Electronic Conductivity ◽  
Compensation Mechanisms ◽  
P Type

Ti1−xCrxO2−x/2−δ (0 ≤ x ≤ 0.05) ceramics show high electronic conductivity at low x attributed to oxygen vacancy compensation by co-doping with Ti3+ and Cr3+ ions. At intermediate x, p-type conductivity is attributed to hole location on under-bonded oxygen.

The effect of sulfur on the electrical properties of S and N co-doped ZnO thin films: experiment and first-principles calculations

2015 ◽  
Vol 17 (26) ◽  
pp. 16705-16708 ◽  
Author(s):  
Wenzhe Niu ◽  
Hongbin Xu ◽  
Yanmin Guo ◽  
Yaguang Li ◽  
Zhizhen Ye ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
First Principles ◽  
Zno Thin Films ◽  
First Principles Calculations ◽  
Type Conductivity ◽  
Doped Zno ◽  
P Type ◽  
Co Doped

The S dopants in S–N co-doped ZnO contribute to easier doping and p-type conductivity, as concluded by experiment and calculations.

scholarly journals Electrical Properties of Cubic InN And GaN Epitaxial Layers as a Function of Temperature

2000 ◽  
Vol 5 (S1) ◽  
pp. 216-222
Author(s):  
J.R.L. Fernandez ◽  
V.A. Chitta ◽  
E. Abramof ◽  
A. Ferreira da Silva ◽  
J.R. Leite ◽  
...  
Keyword(s):  
Activation Energy ◽  
Electrical Properties ◽  
Carrier Concentration ◽  
Doping Level ◽  
Type Conductivity ◽  
Si Doping ◽  
Donor And Acceptor ◽  
Cubic Gan ◽  
Si Doped ◽  
P Type

Carrier concentration and mobility were measured for intrinsic cubic InN and GaN, and for Si-doped cubic GaN as a function of temperature. Metallic n-type conductivity was found for the InN, while background p-type conductivity was observed for the intrinsic GaN layer. Doping the cubic GaN with Si two regimes were observed. For low Si-doping concentrations, the samples remain p-type. Increasing the Si-doping level, the background acceptors are compensated and the samples became highly degenerated n-type. From the carrier concentration dependence on temperature, the activation energy of the donor and acceptor levels was determined. Attempts were made to determine the scattering mechanisms responsible for the behavior of the mobility as a function of temperature.

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.

scholarly journals Dissimilar behavior of YAG:Ce and LuAG:Ce scintillator garnets regarding Li+ co-doping

CrystEngComm ◽  
2018 ◽  
Vol 20 (11) ◽  
pp. 1520-1526 ◽  
Author(s):  
M. V. Derdzyan ◽  
K. L. Hovhannesyan ◽  
A. V. Yeganyan ◽  
R. V. Sargsyan ◽  
A. Novikov ◽  
...  
Keyword(s):  
Charge Compensation ◽  
Experimental Methods ◽  
Co Doping ◽  
Compensation Mechanisms

Using a combination of experimental methods, the substitution tendencies of Li+ and involved charge compensation mechanisms are determined and compared in two important similar scintillators, LuAG:Ce and YAG:Ce.

FUNCTIONAL CATHODE MATERIALS FOR Li-ION BATTERIES — PART II: LiFePO4 AND ITS COMPOSITE

2008 ◽  
Vol 01 (02) ◽  
pp. 97-104 ◽  
Author(s):  
JANINA MOLENDA ◽  
JACEK MARZEC
Keyword(s):  
Electrochemical Properties ◽  
High Temperatures ◽  
Cathode Materials ◽  
Preparation Method ◽  
Electronic Conductivity ◽  
Li Ion Batteries ◽  
Type Conductivity ◽  
High Electronic Conductivity ◽  
Li Ion

The paper presents a review of the structural, electrical and electrochemical properties of LiFePO 4 pospho-olivine dopped with W , Ti , Al and manganese substituted LiFe 1-y Mn y PO 4, synthesized at high temperatures as well as preparation method of LiFePO 4– Fe 2 P composite phases. The nature of the metallic type conductivity of doped phospho-olivine is discussed and some fundamental arguments against the bulk nature of the observed high electronic conductivity are presented.

scholarly journals Electrical properties of CdTe thin layers

2019 ◽  
Vol 20 (4) ◽  
pp. 372-375
Author(s):  
V.V. Prokopiv ◽  
O.B. Kostyuk ◽  
B.S. Dzundza ◽  
T.M. Mazur ◽  
L.V. Turovska ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Cadmium Telluride ◽  
Thin Layers ◽  
Chemical Doping ◽  
Type Conductivity ◽  
Technological Factors ◽  
Layer Velocity ◽  
P Type

The technique of obtaining thin layers of cadmium telluride of p-type conductivity by chemical doping of the surface of cadmium telluride crystals by calcium is described. The dependences of the electrical properties of the obtained films on the technological factors of their production are investigated. The conductivity of the doped layer, velocity and depth of diffusion are determined.

scholarly journals Performance of the Chemical and Electrochemical Composites of PPy/CNT as Electrodes in Type I Supercapacitors

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
S. C. Canobre ◽  
F. F. S. Xavier ◽  
W. S. Fagundes ◽  
A. C. de Freitas ◽  
F. A. Amaral
Keyword(s):  
Coulombic Efficiency ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Promising Material ◽  
Cyclic Voltammograms ◽  
Type I ◽  
Counter Electrodes ◽  
Light Emitting Devices ◽  
High Electronic Conductivity ◽  
P Type

Polypyrrole (PPy) is one of the most studied conducting polymers and a very promising material for various applications such as lithium-ion secondary batteries, light-emitting devices, capacitors, and supercapacitors, owing to its many advantages, including good processability, easy handling, and high electronic conductivity. In this work, PPy films were chemically and electrochemically synthesized, both in and around carbon nanotubes (CNTs). The cyclic voltammograms of the device, composed of the electrochemically synthesized PPy/CNT composites as working and counter electrodes (Type I supercapacitor with p-type doping), showed a predominantly capacitive profile with low impedance values and good electrochemical stability, with the anodic charge remaining almost constant (11.38 mC), a specific capacitance value of 530 F g−1after 50 charge and discharge cycles, and a coulombic efficiency of 99.2%. The electrochemically synthesized PPy/CNT composite exhibited better electrochemical properties compared to those obtained for the chemically synthesized composite. Thus, the electrochemically synthesized PPy/CNT composite is a promising material to be used as electrodes in Type I supercapacitors.

4H-SiC Growth from Si-Cr-C Solution under Al and N Co-Doping Conditions

2015 ◽  
Vol 821-823 ◽  
pp. 9-13 ◽  
Author(s):  
Takeshi Mitani ◽  
Naoyoshi Komatsu ◽  
Tetsuo Takahashi ◽  
Tomohisa Kato ◽  
Toru Ujihara ◽  
...  
Keyword(s):  
Electrical Property ◽  
Electrical Properties ◽  
Solution Growth ◽  
Growth Surface ◽  
Co Doping ◽  
Al Addition ◽  
P Type ◽  
Co Doped

We have investigated the solution growth under various Al-N co-doping conditions. Both p-type and n-type 4H-SiC were successfully grown under Al-N co-doping conditions, while using the effect of Al-addition to stabilize both growth surface and polytype. The doping and electrical properties were investigated systematically. Interaction between Al and N in the incorporation process and electrical property under heavily co-doped conditions were discussed.

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