Results 121 to 130 of about 1,747,140 (249)

Nonlinear absorption study in four and five energy level systems

, 2018
Nonlinear absorption in four and five energy level systems have been studied with the aid of steady-state rate equation approach. We report on the tunability of saturable and reverse saturable absorption as a function of spectroscopic parameters ...
A. Srinivasa Rao (2261209)
core   +1 more source

Optically nonlinear multifunctional ZnO nanorods for optoelectronic applications: Impact of Mn, Ni and Ag dopant

Next Materials
In this study, vertically aligned undoped, Mn, Ni and Ag doped ZnO nanorods (NRs) have been synthesized by hydrothermal method on the seeded substrate. The impact of dopants on structure, morphology, optical properties, photoconductivity and nonlinearity
Nidhi Singh, Lwithwsa Swargiary, R.K. Shukla, Alika Khare, Anchal Srivastava   +4 more
doaj   +1 more source

Correlated Charge Transport in an Organic Coulomb Glass

Advanced Materials, EarlyView.
ABSTRACT Advances in the development of organic field‐effect transistors (OFETs), electrically gated organic semiconductors (EGOFETs), and organic electrochemical transistors (OECTs) allow for the operation of these devices at very high charge‐carrier densities, where Coulomb interactions between carriers can be expected to become significant.
Magdalena Sophie Dörfler, Heinz Bässler, Harald Oberhofer, Anna Köhler   +3 more
wiley   +1 more source

Ultrafast THz Saturable Absorption in Semiconductors

, 2011
We demonstrate THz saturable absorption in n-doped semiconductors GaAs, GaP, and Ge in a nonlinear THz time-domain spectroscopy experiment. Saturable absorption is caused by sample conductivity modulation due to electron heating and satellite valley ...
Hoffmann, Matthias C., Turchinovich, Dmitry   +1 more
core  

DFT and experimental study of expired phenazopyridine doping PMMA for NLO and optical limiting applications

Results in Physics
Efficient organic nonlinear optical (NLO) material is of great interest for photonic and optoelectronic applications. The present work involved the doping of Phenazopyridine extracted from expired pharmaceutical tablets into poly(methyl methacrylate ...
Raed K. Zaidan, Basil A. Abdullah, Mohammed T. Obeed, Abeer Mohammed Jabbar, Ali Qassim Abdullah   +4 more
doaj   +1 more source

Thermodynamic Limits to Molecular Doping in Conjugated Polymers: A Perspective on Phase Behavior and Miscibility

Advanced Materials, EarlyView.
Molecular doping of conjugated polymers is fundamentally constrained by thermodynamic phase behavior. This Perspective reframes doping efficiency and stability in terms of miscibility limits, binodals, and solvus boundaries, highlighting the role of effective interaction parameters and charge transfer.
Somayeh Kashani, Justin Neu, Sung‐Joo Kwon, Runqio Song, Zixuan Chen, Tajah Trapier, Paschalis Gkoupidenis, David Ginger, Wei You, Jasper J. Michels, Harald Ade   +10 more
wiley   +1 more source

Third-order non-linear optical switching and threshold limiting of NiO thin films

Scientific Reports
This study discusses the nonlinear optical properties of as-grown and annealed NiO thin films using the Z-scan technique utilizing the femtosecond laser pulses at a repetition rate of 100 kHz of wavelength 1030 nm with a pulse duration of 370 fs. In open
Sourav Bhakta, Rudrashish Panda, Pratap Kumar Sahoo   +2 more
doaj   +1 more source

Polar protic and aprotic solvents induced nonlinear optical and optical limiting properties of Xanthene dye: A DFT Study

Chemical Physics Impact
Rose Bengal (RB), a xanthene dye, exhibits exceptional nonlinear optical (NLO) properties in both polar protic and aprotic solvents, including ethanol, methanol, 1-propanol, and acetone.
Natarajan Arumugam, Abdulrahman I. Almansour, Rohith Ramasamy, Rajadurai Vijay Solomon, A.G. Bharathi Dileepan, Madhappan Santhamoorthy, S. Jeyaram   +6 more
doaj   +1 more source

Clustomesogen Showing Sub‐Zero Liquid Crystal Properties: Supramolecular Assembly Between Cs2[Mo6Ii8(OCOC2F5)6] and Hexaethylenoxide Containing Mesogenic Dimers

Advanced Materials, EarlyView.
Associating a red‐NIR phosphorescent octahedral hexanuclear molybdenum cluster compound with hexaethyleneoxide chains bearing mesogenic units on both ends leads to an emissive hybrid liquid crystal showing mesomorphism on a very unusual temperature range down to −25°C.
Killiann Heinz, Jeanne Rebours, Zoulikha Zerrouqi, Noée Dumait, Maria Amela‐Cortes, Nikolai Scheuring, Sara Simonovska, Sebastian Marino, Max Ebert, Stéphane Cordier, Sabine Laschat, Yann Molard   +11 more
wiley   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source