Browsing by Author "Justus Simiyu"

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Automobile Battery Monitoring System using Arduino Uno R3 Microcontroller Board

Ignatius Nakhoywa Barasa; Justus Simiyu; Sebastian Waita; Denis Wekesa (2017)

Abstract: The car starter battery normally provides electrical power for engine cranking, lighting of accessories and feeding the engine ignition system. During any given car engine cranking event, a high current ranging ...
Characteristics of TiO2 Compact Layer prepared for DSSC application

Nicholas Musila; Mathew Munji; Justus Simiyu; Eric Masika; Raphael Nyenge; Miriam Kineene (2018)

Abstract. Dye-sensitized solar cells (DSSCs) offer an economically reliable and suitable alternative in moderating the challenges presented by the existing convectional photovoltaic cells. However, the efficiency of ...
Compositional analysis and optical properties of Co doped TiO2 thin films fabricated by spray pyrolysis method for Dielectric and Photocatalytic applications

Henry Barasa Wafula; Robinson Juma Musembi; Albert Owino Juma; Patrick Tonui; Justus Simiyu; Thomas Sakwa; Deo Prakash; K.D. Verma (2016)

Abstract Cobalt doped TiO2 thin films (CTF) deposited by spray pyrolysis has been studied. The compositional analysis has been done using RBS method, while optical spectroscopy has been done by measuring the transmittance ...
The effect of mesoporous TiO2 pore size on the performance of solid-state dye sensitized solar cells based on photoelectrochemically polymerized Poly(3,4-ethylenedioxythiophene) hole conductor

Jinbao Zhang; Meysam Pazoki; Justus Simiyu; Malin B.Johansson; Ocean Cheung; LeifHäggman; Erik M.J.Johansson; Nick Vlachopoulos; Anders Hagfeldt; Gerrit Boschloo (2016)

Abstract Photoelectrochemical polymerization of poly(3,4-ethylenedioxythiphene) (PEDOT) has recently been introduced and widely investigated for fabrication of the hole transporting material (HTM) in highly efficient solid ...
Effect of TiO2 Compact Layer on DSSC Performance

Nicholas Musila; Mathew Munji; Justus Simiyu; Eric Masika; Raphael Nyenge (2018)

Abstract. Dye-sensitized solar cells offer an economically reliable and suitable alternative in moderating the challenges presented by the existing convectional photovoltaic cells. Whereas, for convectional solar cells the ...
Structural and Optical Properties of Phosphorous and Antimony doped ZnO thin films Deposited by Spray Pyrolysis: A Comparative Study

Justine Sageka Nyarige; Sebastian Waita; Justus Simiyu; Silas Mureramanzi; Benard Aduda (2007)

Abstract: A study of structural and properties of pure (undoped) Zinc oxide (ZnO) and phosphorous (P) and Antimony (Sb) doped Zinc Oxide films has been carried out. The films were deposited by an automated spray pyrolysis ...
A Surface Photovoltage Study of Surface Defects on Co-Doped TiO2 Thin Films Deposited by Spray Pyrolysis

Henry Wafula; Albert Juma; Thomas Sakwa; Robinson Musembi; Justus Simiyu (2018)

Abstract: Surface photovoltage (SPV) spectroscopy is a powerful tool for studying electronic defects on semiconductor surfaces, at interfaces, and in bulk for a wide range of materials. Undoped and Cobalt-doped TiO2 (CTO) ...
Traektoriâ Nauki = Path of Science. 2018. Vol. 4, No 7 ISSN 2413-9009 Section “Physics” 3001 Optical Properties and Analysis of OJL Model’s Electronic inter-band Transition Parameters of TiO2 Films

Nicholas Musila; Mathew Munji; Justus Simiyu; Eric Masika; Raphael Nyenge (2018)

Abstract. Titanium dioxide is a wide band gap semiconductor responsible for the bright white appearance in most substances. This material has many unique properties due to its extra-ordinary chemical stability. ...

Now showing items 1-8 of 8

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