scholarly journals Exploring the temperature effect on hole transport properties in organic bulk heterojunctions

RSC Advances ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 3157-3161
Author(s):  
Bixin Li ◽  
Shiyang Zhang ◽  
Xianglin Li
Keyword(s):  
Temperature Effect ◽  
Transport Properties ◽  
Mobility Model ◽  
Hole Transport ◽  
Bulk Heterojunctions ◽  
Trapping Model ◽  
Increasing Temperature

The hole transport in organic bulk heterojunctions shows a transition from a mobility model to a trapping model with increasing temperature.

Effects of Fe3O4 Nano Particles Addition in High Temperature Superconductor YBa2Cu3O7-δ

2012 ◽  
Vol 501 ◽  
pp. 309-313 ◽  
Author(s):  
Siti Nurdalila Abd-Ghani ◽  
Roslan Abd-Shukor ◽  
Wei Kong
Keyword(s):  
Transport Properties ◽  
Solid State Reaction Method ◽  
Nano Particles ◽  
Magnetic Impurities ◽  
Oxide Powders ◽  
Nano Fe3o4 ◽  
Activated Flux ◽  
Average Size ◽  
Increasing Temperature ◽  
Magnetic Nano Particles

The effects of nano particles Fe3O4 addition on the superconducting and transport properties of YBa2Cu3O7-δ (YBCO) were studied. YBa2Cu3O7-δ superconductor powders were prepared by using high purity oxide powders via solid state reaction method. Nano Fe3O4 with 0.01 – 0.05 wt.% with average size 28 nm was added into YBCO. The transition temperatures (Tc) of the samples were measured by using four point probe method. The critical current (Ic) of the samples has been determined by using the 1 μV/cm criterion from 30 – 77 K. Sample with 0.02 wt.% nano Fe3O4 showed the highest Tc at 87 K. It is interesting to note the same sample also exhibited the highest Jc at 77 K up to 1683 mA/cm2. Nano Fe3O4 has acted as effective flux pinning centers in YBCO. A small amount of nano particles Fe3O4 addition has successfully improved the superconducting and transport properties of YBCO. The excessive addition of nano Fe3O4 (> 0.02 wt.%) suppressed the Tc and Jc. Overall, Jc decreases with increasing temperature (30 – 77 K) as a consequence of thermally activated flux creep. Magnetic impurities normally suppress superconductivity. However, by adding magnetic nano particles, current carrying capacity of superconductors YBCO was enhanced significantly.

Electronic Transport Properties of Hot-Pressed B6Si

1987 ◽  
Vol 97 ◽  
Author(s):  
C. Wood ◽  
D. Emin ◽  
R. S. Feigelson ◽  
I. D. R. Mackinnon
Keyword(s):  
Electrical Conductivity ◽  
Seebeck Coefficient ◽  
Transport Properties ◽  
Electronic Transport ◽  
Hall Mobility ◽  
Anomalous Behavior ◽  
Nominal Composition ◽  
Electronic Transport Properties ◽  
Increasing Temperature ◽  
P Type

ABSTRACTMeasurements of the electrical conductivity, Seebeck coefficient and Hall mobility from -300 K to -1300 K have been carried out on multiphase hotpressed samples of the nominal composition B6Si. In all samples the conductivity and the p-type Seebeck coefficient both increase smoothly with increasing temperature. By themselves, these facts suggest small-polaronic hopping between inequivalent sites. The measured Hall mobilities are always low, but vary in sign. A possible explanation is offered for this anomalous behavior.

scholarly journals The impact of molecular weight, air exposure and molecular doping on the charge transport properties and electronic defects in dithienyl-diketopyrrolopyrrole-thieno[3,2-b]thiophene copolymers

2016 ◽  
Vol 4 (46) ◽  
pp. 10827-10838 ◽  
Author(s):  
Riccardo Di Pietro ◽  
Tim Erdmann ◽  
Naixiang Wang ◽  
Xuhai Liu ◽  
David Gräfe ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Charge Transport ◽  
Transport Properties ◽  
Hole Transport ◽  
Trap States ◽  
Air Exposure ◽  
Molecular Doping ◽  
Electronic Defects ◽  
The Impact

Optimization of hole transport via passivation of trap states.

The Temperature Effect on the Transport Properties of 1-Alkyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquids

2018 ◽  
Vol 92 (4) ◽  
pp. 724-729 ◽  
Author(s):  
E. P. Grishina ◽  
N. O. Kudryakova ◽  
L. M. Ramenskaya ◽  
Yu. A. Fadeeva
Keyword(s):  
Ionic Liquids ◽  
Temperature Effect ◽  
Transport Properties

EFFECTIVE MOBILITY MODEL OF GRAPHENE NANORIBBON IN PARABOLIC BAND ENERGY

2011 ◽  
Vol 25 (10) ◽  
pp. 739-745 ◽  
Author(s):  
N. A. AMIN ◽  
M. T. AHMADI ◽  
Z. JOHARI ◽  
S. M. MOUSAVI ◽  
R. ISMAIL
Keyword(s):  
Experimental Data ◽  
Band Structure ◽  
Transport Properties ◽  
Conventional Method ◽  
Dirac Point ◽  
Graphene Nanoribbons ◽  
Mobility Model ◽  
Band Energy ◽  
One Dimensional ◽  
Effective Mobility

In this letter, we investigate the transport properties of one-dimensional semiconducting Graphene nanoribbons (GNRs) with parabolic band structure near the Dirac point. The analytical model of effective mobility is developed by using the conductance approach, which differs from the conventional method of extracting the effective mobility using the well-known Matthiessen rule. Graphene nanoribbons conductance model developed was applied in the Drude model to obtain the effective mobility, which then gives nearly close comparison with the experimental data.

Effects of carbon chain on hole-transport properties in naphtho[2,1-b:6,5-b′]difuran derivatives: Remarkable anisotropic mobilities

2014 ◽  
Vol 15 (11) ◽  
pp. 3341-3348 ◽  
Author(s):  
Xiao-Yu Zhang ◽  
Guang-Jiu Zhao ◽  
Jin-Dou Huang ◽  
Wei-Ping Zhang
Keyword(s):  
Transport Properties ◽  
Carbon Chain ◽  
Hole Transport

Modeling temperature effect on dynamic modulus of elasticity of red pine (Pinus resinosa) in frozen and non-frozen states

Holzforschung ◽  
2015 ◽  
Vol 69 (2) ◽  
pp. 233-240 ◽  
Author(s):  
Shan Gao ◽  
Xiping Wang ◽  
Lihai Wang
Keyword(s):  
Temperature Effect ◽  
Modulus Of Elasticity ◽  
Freezing Point ◽  
Red Pine ◽  
Analytical Models ◽  
Clear Wood ◽  
Green Wood ◽  
Static Modulus ◽  
Static Modulus Of Elasticity ◽  
Increasing Temperature

Abstract The response of dynamic and static modulus of elasticity (MOEdyn and MOEsta) of red pine small clear wood (25.4×25.4×407 mm3) within the temperature range -40 to 40°C has been investigated. The moisture content (MC) of the specimens ranged from 0 to 118%. The MOEdyn was calculated based on measured ultrasonic velocity (V) and wood density. The MOEsta was measured by static bending tests in a climate chamber between -40 and 40°C. The results indicate that both MOEdyn and MOEsta were affected by temperature and the MC. Above freezing point, MOE decreased linearly at a slow rate with increasing temperature. Below freezing point, MOE increased at a rapid rate with decreasing temperature. The MC-level had a significant effect on the MOE-temperature relationships. Temperature effect was much more significant in green wood than in dry wood. Analytical models were developed to predict the change of MOEdyn relative to that at 20°C in the case of acoustic measurements under different temperature conditions.

Temperature dependence of hole transport properties through physically defined silicon quantum dots

2020 ◽  
Vol 117 (9) ◽  
pp. 094001
Author(s):  
N. Shimatani ◽  
Y. Yamaoka ◽  
R. Ishihara ◽  
A. Andreev ◽  
D. A. Williams ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Temperature Dependence ◽  
Transport Properties ◽  
Hole Transport ◽  
Silicon Quantum Dots
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