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911.
Inderpreet Singh Devinder Madhwal A. Kumar I. Kaur C.S. Bhatia P.C. Mathur 《Journal of luminescence》2010,130(11):2157-2160
An efficient electron transporting layer (ETL) based on single walled carbon nanotube (SWCNT) composites has been developed for poly [2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) based orange polymer light emitting diodes (PLEDs) and its effect on the performance of PLEDs has been examined. It is observed that with increase in SWCNT concentration, in ETL, the luminance and luminous efficiency of the PLEDs increase (about 5 times increase in luminance is observed at 5% w/w SWCNT concentration). The SWCNTs present in the MEH-PPV ETL boost the mobility of electrons injected from the cathode towards the emissive layer by establishing highly conducting percolation paths. This balances the concentration of holes and electrons in the emissive layer, which leads to enhanced emission from the PLEDs. 相似文献
912.
Vishal Gupt Pooja Dhawan Jatinderdeep Kaur 《Journal of Applied Analysis & Computation》2020,10(3):946-959
In the present article, the notion of expansion between quasi partial metric spaces through aggregation is defined. With the help of aggregation functions, the concept of projective $\Psi$-expansion is introduced and some fixed point results are obtained through this notion. Furthermore, sufficient conditions are provided to characterize aggregation function and to ensure the existence and uniqueness of fixed point. All the results presented in this paper are new and an application to asymptotic complexity analysis is also given after the results. 相似文献
913.
Bhatia Sumit Kaur 《Nonlinear Analysis: Theory, Methods & Applications》2010,73(8):2368-2382
Let Ω be a bounded domain in RN,N≥2, with C2 boundary. In this work, we study the existence of multiple positive solutions of the following problem:
914.
Amanpreet Kaur Sandhu Surinder Singh Om Prakash Pandey 《Indian Journal of Physics》2009,83(7):985-991
Silica based glasses are used as nuclear shielding materials. The effect of radiation on these glasses varies as per the constituents
used in these glasses. Glasses of different composition of SiO2-Na2OMgO-Al2O3 were made by melt casting techniques. These glasses were irradiated with neutrons of different fluences. Optical absorption
measurements of neutron-irradiated silica based glasses were performed at room temperature (RT) to detect and characterize
the induced radiation damage in these materials. The absorption band found for neutron-irradiated glasses are induced by hole
type color centers related to non-bridging oxygen ions (NBO) located in different surroundings of glass matrix. Decrease in
the transmittance indicates the formation of color-center defects. Values for band gap energy and the width of the energy
tail above the mobility gap have been measured before and after irradiation. The band gap energy has been found to decrease
with increasing fluence while the Urbach energy shows an increase. The effects of the composition of the glasses on these
parameters have been discussed in detail in this paper.
相似文献
915.
Mohan Singh Bikram Singh Navjeet Kaur Lakhwant Singh 《Indian Journal of Physics》2009,83(8):1099-1107
A comparative study of various stopping power tables and codes for heavy ions in gases has been made through comparison of
computed values and the corresponding experimental data. Ten gaseous media: five monatomic rare gases (He to Xe), two diatomic
gases (H2, N2) and three polyatomic gaseous compounds (CH4, CF4 and CO2) have been chosen to study the stopping power investigations of heavy ions (8 ≤ Z ≤ 92) having energy ranges of ∼0.10–10.00
MeV/n and ∼20.00–57.00 MeV/n. We compare the experimental data of stopping power to values calculated using various tables
and computer codes by ICRU-73, Ziegler et al (SRIM2003.26), Grande and Schiwietz (CasP3.1), Paul and Schinner (MSTAR3.12), and Bazin and Tarasov (LISE ++:2-ATIMA1.2).
On the basis of statistical analysis, we estimate the reliability of these tables and codes. It has been observed that the
MSTAR3.12 code shows the best agreement with the experimental data for projectile ions (8 ≤ Z ≤ 18) in the entire energy range. The SRIM2003.26 code provides good results except for some heavy projectiles (Xe, Pb and
U). The values tabulated by CasP3.1 code underestimate especially at low energy region. No significant trend is observed in
case of LISE++:2-ATIMA1.2 code and ICRU-73 report. 相似文献
916.
Rishu Chaujar Ravneet Kaur Manoj Saxena Mridula Gupta R.S. Gupta 《Superlattices and Microstructures》2009
Part I of this paper dealt with the hot carrier reliability evaluation of Gate Electrode Workfunction Engineered Recessed Channel (GEWE-RC) MOSFET involving channel recession and gate electrode workfunction engineering integration onto the conventional MOSFET, using an ATLAS device simulator. It was demonstrated that with the gate stack architecture incorporated onto the GEWE-RC MOSFET and tuning of various structural design parameters such as gate length (LG), negative junction depth (NJD), substrate doping (NA), gate metal workfunction, substrate bias (VSUB), drain bias (VDS) and gate oxide permittivity (εox2), excellent hot carrier immunity can be achieved in terms of conduction band offset, reduced electron velocity, electron temperature, hot electron injected gate current and impact ionization substrate current. This paper focuses on the analog and large signal performance metrics in terms of linearity, intermodulation distortion, device efficiency and speed-to-power dissipation design parameters. Moreover, the paper also discusses the effect of gate stack architecture and various design parameters such as LG, NJD, NA, gate metal workfunction and εox2 for different substrate (VSUB) and drain to source (VDS) voltages. The work, thus, proves the effectiveness of GEWE-RC for RFICs with a higher efficiency, better linearity performance; and designing and modeling of power amplifiers. 相似文献
917.
Narinder Singh Ray C. Mulrooney Navneet Kaur John F. Callan 《Journal of fluorescence》2009,19(5):777-782
Schiff base receptor 1a has been synthesised and attached to the surface of preformed CdSe/ZnS Quantum Dots (QDs) to form QD-conjugate 2a. While 1a was determined to be selective for Mg2+, 2a demonstrated selectivity for both K+ and Ca2+ when tested against a range of physiologically and environmentally relevant cations by changes in the fluorescence spectra. Thus, the nanoparticle surface functions as a scaffold for the organisation of receptors enabling semi-selective binding. The fluorescence response was shown to be linear between 15–50?μM for K+ and 2–35?μM for Ca2+. It was also demonstrated that 2a could measure both K+ and / or Ca2+ in solutions containing both ions. 相似文献
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