Browsing University of Waterloo by Author "Musselman, Kevin"
Now showing items 1-14 of 14
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Accurate determination of interface trap state parameters by admittance spectroscopy in the presence of a Schottky barrier contact: Application to ZnO-based solar cells
Marin, Andrew T.; Musselman, Kevin P.; MacManus-Driscoll, Judith L. (AIP Publishing, 2013-04-14)This work shows that when a Schottky barrier is present in a photovoltaic device, such as in a device with an ITO/ZnO contact, equivalent circuit analysis must be performed with admittance spectroscopy to accurately determine ... -
The application of localized surface plasmons resonance in Ag nanoparticles assisted Si chemical etching
Ding, Ruiqiang; Dai, Han; Li, Meicheng; Huang, Jinjer; Li, Yingfeng; Trevor, Mwenya; Musselman, Kevin P. (AIP Publishing, 2014-01-06)Localized surface plasmons excited by Ag nanoparticles are introduced in the chemical etching process of silicon. A special crateriform structure with gradually varying radius is achieved by the surface electromagnetic ... -
Bipolar resistive switching and memristive properties of hydrothermally synthesized TiO2 nanorod array: Effect of growth temperature
Khot, A. C.; Desai, Neha D.; Khot, Kishorkumar V.; Salunkhe, Manauti M.; Chougule, Manik A.; Bhave, T. M.; Kamat, Rajanish K.; Musselman, Kevin P.; Dongale, Tukaram D. (Elsevier, 2018-08-05)In the present work, the hydrothermal approach is employed to develop 1D-TiO2 nanorod array memristive devices and the effect of hydrothermal growth temperature on TiO2 memristive devices is studied. X-ray diffraction (XRD) ... -
Bright and efficient blue polymer light emitting diodes with reduced operating voltages processed entirely at low-temperature
Hoye, Robert L. Z.; Musselman, Kevin P.; Chua, M. R.; Sadhanala, Aditya; Raninga, R. D.; MacManus-Driscoll, Judith L.; Friend, Richard H.; Credgington, Dan (Royal Society of Chemistry, 2015-09-03)Hybrid blue polymer light emitting diodes (PLEDs) with high efficiencies, luminance >20 000 cd m−2 and low operating voltages are obtained using processing temperatures ≤150 °C. By briefly applying an electric field across ... -
Efficient Triplet Exciton Fusion in Molecularly Doped Polymer Light-Emitting Diodes
Di, Dawei; Yang, Le; Richter, Johannes M.; Meraldi, Lorenzo; Altamimi, Rashid M.; Alyamani, Ahmed Y.; Credgington, Dan; Musselman, Kevin P.; MacManus-Driscoll, Judith L.; Friend, Richard H. (Wiley, 2017-04-04)Solution-processed polymer organic light-emitting diodes (OLEDs) doped with triplet-triplet annihilation (TTA)upconversion molecules, including 9,10-diphenylanthracene, perylene, rubrene and TIPS-pentacene, are reported. ... -
Fabrication of ZnO/Cu2O heterojunctions in atmospheric conditions: Improved interface quality and solar cell performance
levskaya, Yulia; Hoye, Robert L. Z.; Sadhanala, Aditya; Musselman, Kevin P.; MacManus-Driscoll, Judith L. (Elsevier, 2015-04-01)Zn1−xMgxO/Cu2O heterojunctions were successfully fabricated in open-air at low temperatures via atmospheric atomic layer deposition of Zn1−xMgxO on thermally oxidized cuprous oxide. Solar cells employing these heterojunctions ... -
Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO
Ievskaya, Yulia; Hoye, Robert L. Z.; Sadhanala, Aditya; Musselman, Kevin P.; MacManus-Driscoll, Judith L. (Journal of Visualized Experiments, 2016-07-01)Atmospheric pressure spatial atomic layer deposition (AP-SALD) was used to deposit n-type ZnO and Zn1-xMgxO thin films onto p-type thermally oxidized Cu2O substrates outside vacuum at low temperature. The performance of ... -
In-situ observation of nucleation and property evolution in films grown with an atmospheric pressure spatial atomic layer deposition system.
Mistry, Kissan; Jones, Alex; Kao, Manfred; Yeow, Travis; Yavuz, Mustafa; Musselman, Kevin (IOP Science, 2020-06-01)Atmospheric pressure—spatial atomic layer deposition (AP-SALD) is a promising open-air deposition technique for high-throughput manufacturing of nanoscale films, yet the nucleation and property evolution in these films has ... -
Nanostructured conformal hybrid solar cells: a promising architecture towards complete charge collection and light absorption
Iza, Diana C.; Munoz-Rojas, David; Musselman, Kevin P.; Weickert, Jonas; Jakowetz, Andreas C.; Sun, Haiyan; Ren, Xin; Hoye, Robert L. Z.; Lee, Joon H.; Wang, Haiyan; Schmidt-Mende, Lukas; MacManus-Driscoll, Judith L. (Springer, 2013-08-22)We introduce hybrid solar cells with an architecture consisting of an electrodeposited ZnO nanorod array (NRA) coated with a conformal thin layer (< 50 nm) of organic polymer-fullerene blend and a quasi-conformal Ag top ... -
Perspective: Maintaining surface-phase purity is key to efficient open air fabricated cuprous oxide solar cells
Hoye, Robert L. Z.; Brandt, Riley E.; Ievskaya, Yulia; Heffernan, Shane; Musselman, Kevin P.; Buonassisi, Tonio; MacManus-Driscoll, Judith L. (AIP Publishing, 2015-02-01)Electrochemically deposited Cu2O solar cells are receiving growing attention owing to a recent doubling in efficiency. This was enabled by the controlled chemical environment used in depositing doped ZnO layers by atomic ... -
Research Update: Doping ZnO and TiO2 for solar cells
Hoye, Robert L. Z.; Musselman, Kevin P.; MacManus-Driscoll, Judith L. (AIP Publishing, 2013-12-01)ZnO and TiO2 are two of the most commonly used n-type metal oxide semiconductors in new generation solar cells due to their abundance, low-cost, and stability. ZnO and TiO2 can be used as active layers, photoanodes, buffer ... -
Resistive Switching Memory of TiO2 Nanowire Networks Grown on Ti Foil by a Single Hydrothermal Method
Xiao, Ming; Musselman, Kevin P.; Duley, Walter W.; Zhou, Norman Y. (Springer, 2017-04-01)The resistive switching characteristics of TiO2 nanowire networks directly grown on Ti foil by a single-step hydrothermal technique are discussed in this paper. The Ti foil serves as the supply of Ti atoms for growth of ... -
Simple plasma assisted atomic layer deposition technique for high substitutional nitrogen doping of TiO2
Alshehri, Abdullah H.; Nelson-Fitzpatrick, Nathan; Ibrahim, Khaled H.; Mistry, Kissan; Yavuz, Mustafa; Musselman, Kevin P. (AIP Publishing, 2018-03-21)In this work, a plasma assisted atomic layer deposition system was used to deposit nitrogen-doped titanium dioxide. A simple approach was developed that requires only a nitrogen plasma and short plasma exposure times to ... -
Simulated electron affinity tuning in metal-insulator-metal (MIM) diodes
Mistry, Kissan; Yavuz, Mustafa; Musselman, Kevin P. (American Institute of Physics, 2017-04-27)Metal-insulator-metal diodes for rectification applications must exhibit high asymmetry, nonlinearity, and responsivity. Traditional methods of improving these figures of merit have consisted of increasing insulator ...