User:Jgwamuri: Difference between revisions

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Jephias Gwamuri

Jephias Gwamuri
Jephias Gwamuri is a PhD student in the Department of Materials Science & Engineering

Bio

I am a doctoral student in the Material Science and Engineering at Michigan Tech. My Ph.D. research is aimed at exploiting plasmonics and photonics to design and fabricate plasmonic - metamaterial based solar cells. The project aims to explore the extent to which it possible to manage solar radiation efficiently using plasmonic metamaterial perfect absorbers integrated in hydrogenated amorphous silicon (a-Si:H)-based solar photovoltaic devices. This knowledge will contribute to increasing the efficiency and lowering the cost of production of solar cells. The project also include aspects of Solar PV devices fabrication, designing of open source ellipsometer and four point probe stations as well as off-grid and grid connected PV system designing and optimization.

I have been a member of Professor Joshua Pearce's Michigan Tech's Open Sustainability Technology [MOST] Research Group since August 2012. My specialties include thin film characterization using Variable Angle Spectroscopy Ellipsometry (WVASE32 and completeEASY), Four Point Probe (4PP)systems, Scanning Electron Microscopy (FESEM/SEM)and Profilometer techniques. My current skills also include thin film growth techniques using PECVD, PVD ( e-beam evaporation and sputter deposition systems), semiconductor/micro-fabrication processing and clean room techniques.

I am currently working on mastering other fabrication and characterization techniques such as 3D printing, Focused Ion Beam, FIB and Transmission Electron Microscopy, TEM.

Research

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Research Interests:

Solar PV Conversion Efficiency,
Plasmonics in Photovoltaics,
Metamaterials,
PV Systems Design and Optimization
3D Printing
Snow effect on PV systems project, http://www.mtukrc.org/weather.htm

Publications

Book Chapters

Solar Cell nanotechnology. Chapter 10: Advances in Plasmonic Light Trapping in Thin-Film Solar Photovoltaic Devices. http://www.wiley.com/WileyCDA/WileyTitle/productCd-111868625X,subjectCd-NT10.html

Journal articles

Exchanging Ohmic Losses in Metamaterial Absorbers with Useful Optical Absorption for Photovoltaics. http://www.nature.com/srep/2014/140509/srep04901/full/srep04901.html

Conference Proceedings

DESIGN OF PV SOLAR HOME SYSTEM FOR USE IN URBAN ZIMBABWE (Nov. 2010). http://www.appropriatetech.net/?q=content/icat-4-energy-paper-titles.

The Viability of Nanotechnology-based InGaN Solar Photovoltaic Devices for Sustainable Energy Generation. http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=9030478

Additional pages to manage:

Spectrometric Ellipsometry Protocol Ellipsometry protocol: MOST
Literature review Plasmonic Perfect Meta-Absobers for a-Si PV Devices
Focused Ion Beam Protocol Focussed_Ion_beam_(FIB)_protocol: MOST
E-beam deposition Protocol E-beam_Deposition_protocol:_MOST
Four Point Resistivity and Conductivity Type Measurements_protocol:_MOST
Perkin-Elmer RF Sputtering System-6 Inch_protocol:_MOST

Image gallery

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 I am a doctoral student in the Material Science and Engineering at Michigan Tech. My Ph.D. research is aimed at exploiting plasmonics and photonics to design and fabricate plasmonic - metamaterial based solar cells. The project aims to explore the extent to which it possible to manage solar radiation efficiently using plasmonic metamaterial perfect absorbers integrated in hydrogenated amorphous silicon (a-Si:H)-based solar photovoltaic devices. This knowledge will contribute to increasing the efficiency and lowering the cost of production of solar cells. The project also include aspects of Solar PV devices fabrication, designing of open source ellipsometer and four point probe stations as well as off-grid and grid connected PV system designing and optimization.
-I have been a member of Professor Joshua Pearce's Michigan Tech's Open Sustainability Technology [MOST] Research Group since August 2012. My specialties include thin film characterization using Variable Angle Spectroscopy Ellipsometry (WVASE32 and completeEASY), Four Point Probe (4PP)systems, Scanning Electron Microscopy (FESEM/SEM) techniques. My current skills also include thin film growth techniques using PECVD (MV System), PVD ( e-beam evaporation and sputter deposition systems), semiconductor/micro-fabrication processing and clean room techniques.
+I have been a member of Professor Joshua Pearce's Michigan Tech's Open Sustainability Technology [MOST] Research Group since August 2012. My specialties include thin film characterization using Variable Angle Spectroscopy Ellipsometry (WVASE32 and completeEASY), Four Point Probe (4PP)systems, Scanning Electron Microscopy (FESEM/SEM)and Profilometer techniques. My current skills also include thin film growth techniques using PECVD, PVD ( e-beam evaporation and sputter deposition systems), semiconductor/micro-fabrication processing and clean room techniques.
 I am currently working on mastering other fabrication and characterization techniques such as 3D printing, Focused Ion Beam, FIB and Transmission Electron Microscopy, TEM.