Physics, Engineering Physics and Astronomy, Department of
The Physics, Engineering Physics, and Astronomy is one of Canada's leading teaching and research institutes in Physics, Engineering Physics and Astronomy. Our faculty include high-profile, world-class physicists who work on cutting edge areas of theoretical, computational, applied and experimental physics.
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Recent Submissions
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Optimization of spherical proportional counter backgrounds and response for low mass dark matter search
The NEWS-G collaboration uses Spherical Proportional Counters to search for Weakly Interacting Massive Particles (WIMP). The first detector developed for this goal is a 60 cm diameter sphere installed at the Laboratoire ... -
Computational study of rovibrational spectrum of CO-CO 2
The Lanczos algorithm was used to determine J=0 and J=1 ro-vibrational energy levels for CO-CO2 . The fundamental transition energies have good agreement with previous experiments for both the C-bound and O-bound isomers. ... -
End-to-End Quality Assurance of Complex Radiation Therapy Treatments
Radiation treatments have become increasingly complex, making quality assurance (QA) of radiation therapy deliveries of vital importance. In order to measure complex dose deliveries, it is crucial to have the proper ... -
Electron Recoils In the PICO Direct Dark Matter Detection Experiment
The PICO-40L bubble chamber for direct dark matter detection is finishing the commissioning phase at SNOLAB. The detector will operate for 1 live year before being replaced by the next-generation detector, PICO-500. The ... -
Transfer of chirality from light to a Disperse Red 1 molecular glass surface
(Optical Society of America, 2017-08-30)Chiral structures and materials interact with light in well-documented ways, but light can also interact with achiral materials to generate chirality by inscribing its asymmetric configuration on photoresponsive materials, ... -
Searching for Evidence of Optical Rectification: Optically-Induced Nonlinear Photovoltage in a Capacitor Configuration
(Optical Society of America, 2018-12-12)A current challenge in photonics is to design new versatile photodetectors based on optical rectification induced photo-voltage; these ones are more attractive than classical photodetectors because they do not rely on band ... -
Deceleration of thermal ring closure in a glass-forming mexylaminotriazine-substituted merocyanine (MC) linked to intramolecular hydrogen bonding
(RSC, 2016-12-21)The design and synthesis of a glass-forming nitrobenzospiropyran (SP) functionalized with a mexylaminotriazine group is reported herein. The title compound was synthesized in 63% overall yield by the carbamylation of a ... -
Fabrication of planar heterojunction CsPbBr2I perovskite solar cells using ZnO as an electron transport layer and improved solar energy conversion efficiency
(RSC, 2018-06-26)Inorganic lead halide perovskite solar cells with mixed halides have achieved reasonable power conversion efficiency with the advantage of an enhanced stability. In this work, we report the fabrication of an all inorganic ... -
Cesium lead halide perovskite nanostructures: tunable morphology and halide composition
(Wiley, 2017-08-25)Inorganic halide perovskite (CsPbX3) nanostructures have gained considerable interest in recent years owing to their enhanced stability and optoelectronic applications. Recent developments in the synthesis of nanostructures ... -
Near Infrared Electroluminescence from Nd(TTA)3Phen in Solution-Processed Small Molecule Organic Light Emitting Diodes
(Elsevier, 2017-02-01)We report on the near infrared electroluminescence properties of a Nd3+ complex with thenoyltrifluoroacetone and 1,10-phenantroline ligands in solution-processed organic light-emitting diodes. Spincoated blends containing ... -
Solid-state showdown: comparing the photovoltaic performance of amorphous and crystalline small-molecule diketopyrrolopyrrole acceptors
(Elsevier, 2017-06-06)A novel glass-forming diketopyrrolpyrrole (DPP) derivative (DPP-glass) and a crystalline isoelectronic analogue were synthesized and their photophysical, electrochemical and photovoltaic properties were investigated. The ... -
Light induced electro-luminescence patterning: interface energetics modification at semiconducting polymer and metal-oxide heterojunction in a photodiode
(American Chemical Society, 2018-10-01)Understanding the injection barriers and defect states at the metal−organic or inorganic−organic interfaces is one of the key challenges in improving the efficiency of hybrid electronic devices. In this paper, polymer and ... -
Simple Unbiased Hot-electron Polarization-sensitive Near-Infrared Photo-detector
(American Chemical Society, 2018-03-06)Plasmonic nanostructures can generate energetic “hot” electrons from light in a broad band fashion depending on their shape, size, and arrangement. Such structures have a promising use in photodetectors, allowing high ... -
Reversible Light-Induced Solubility of Disperse Red 1 Dye in a Hydroxypropyl cellulose Matrix
(Springer, 2018-01-29)We present results on reversible light-induced solubility of disperse red 1 (DR1) dye in a hydroxypropyl cellulose (HPC) matrix. The samples were prepared by dissolution of both DR1 and HPC in acetone and left to dry ... -
Towards amorphous solution-processed small-molecule photovoltaic cells by design
(Elsevier, 2017-07-05)Organic photovoltaic cells incorporating a homogeneously blended amorphous active layer were fabricated using a novel glass-forming squarylium cyanine derivative (SQ-glass) as donor, and both a previously reported glass-forming ... -
Efficiency enhancement of ternary blend organic photovoltaic cells with molecular glasses as guest acceptors
(Elsevier, 2017-11-06)Previously reported glass-forming perylenediimide (PDI-glass) and diketopyrrolopyrrole (DPP-glass) acceptors were used as ternary components to modulate the morphology and electron transport properties of bulk heterojunctions ... -
A Zinc(II) Benzamidinate-N-oxide Complex as an Aggregation-Induced Emission Material: toward Solution-Processable White Organic Light-Emitting Devices
(Wiley, 2018-10-11)The synthesis, characterization, photophysical and redox properties of a dinuclear complex Zn2(AMOX)4 (AMOX = 4-bromo N,N’-diphenylbenzamidinate-N-oxide) are highlighted. This compound is a first example of a novel class ... -
T-Shaped Indan-1,3-dione Derivatives as Promising Electron Donors for Bulk Heterojunction Small Molecule Solar Cell
(Elsevier, 2017-04-24)We report on the photovoltaic performance of novel T-Shaped Indan-1,3-dione derivatives as donors in a solution processed bulk heterojunction solar cells. Small molecule bulk heterojunction solar cells of these molecules ... -
Wet-etched phononic crystal waveguiding on GaAs
(IOP Publishing, 2018-01-10)A wet-etched phononic crystal waveguide in GaAs with approximately two micron deep inclusions is studied both numerically and experimentally for controlled surface acoustic wave propagation. Numerically, the phononic crystal ... -
Testing Photometric and Kinematic Algorithms to predict Next-Generation Telescope Survey Statistics
Reconciling the velocity function of dark matter halos in collisionless simulations with those derived observationally requires understanding how galaxies are embedded in their dark matter halos. Widefield neutral atomic ...
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