Albert Owino Juma

https://www.etis.ee/CV/Albert Owino_Juma/est
7.09.1979
620 3369
albert.juma@ttu.ee

Teenistuskäik

Töökohad ja ametid
01.01.2009–31.12.2014   
Maseno University, Faculty of Science, Department of Physics and Materials Science; Tutorial Fellow
01.01.2004–31.12.2004   
Shitoto Girls Secondary School; Graduate Teacher
01.01.2004–31.12.2009   
Maseno University, Faculty of Science, Department of Physics and Materials Science; Graduate Assistant
 
 
Haridustee
2010–2013   
PhD: Freie Universität Berlin & Helmholtz-Zentrum Berlin für Materialien und Energie;
2005–2009   
Masters; Maseno University, Faculty of Science, Department of Physics and Materials Science
1999–2004   
Bachelors; Maseno University, Faculty of Science, Department of Physics and Materials Science
 
 
Teadusorganisatsiooniline ja -administratiivne tegevus
2012−2014   
Laboratory experiments for the course "Semiconductor Physics: Concepts in photovoltaic solar energy conversion" given by PD Dr. Thomas Dittrich, Physics Department, Free University Berlin.
2005−2010   
Student Advisor, Department of Physics and Materials Science, Maseno University
2005−2010   
Undergraduate physics laboratory experiments for the courses; Optics, mechanics, oscillations and waves, structure and properties of matter, electricity and magnetism, electronics, in Department of Physics and Materials Science, Maseno University.
 
 
Loometöö
Developed a pneumatic spin-spray setup system for deposition of CuSCN thin films from a propyl sulfide solution during PhD studies.
.
Developed a wet chemical method for etching CuSCN thin films during PhD studies. .
Built circuit to run an automatic temperature controller for domestic use as my undergraduate project..
 
 
Teenistuskäigu lisainfo
Invited talks and presentations:
Department of Materials Science, Tallinn University of Technology, Title: "Copper diffusion in In2S3 and charge separation at In2S3/CuSCN and TiO2/In2S3 interfaces" 14 May 2014.
Sketches of Science exhibition: Photo session with Nobel Laureates, Nobel Museum in collaboration with the Foundation Lindau Nobelprizewinners Meetings at Lake Constance; Landesvertrendung, Baden – Wurtemberg, Berlin.Role: One of the panelists in the interview session (by invitation)
Ultrafast Surface Dynamics Group; Department of Physics, Freie Universät Berlin, Title: "Investigation of ultra-thin charge selective contacts for nanocomposite TiO2/In2S3/CuSCN solar cells"
Researchers Forum 2/2012: Focus on Energy Technology. TSB Technologiestiftung Berlin. Title: "Experiences of a vising scholar in Berlin, Germany (Guest speaker)".
Department of Physics and Astronomy, Friedrich – Schiller - Universität, Jena. Title: "Investigation of ultra-thin In2S3/CuSCN charge selective contacts for nanostructured solar cells". ;
May-November 2012: Co-supervised Masters student; Anahita Azarpira. Thesis title: "Spray ILGAR (ion layer gas reaction) deposition of In2S3 and Sb2S3 into nanoporous TiO2". Submitted for Master of Science in Global Production Engineering (GPE) at the Technische Universität Berlin. ;
Aug. 2014: Short course trainer for "Solar photovoltaic installation, maintenance and entrepreneurship" , University of Nairobi, Kenya. ;

Kvalifikatsioon

Teaduspreemiad ja tunnustused
2013, Albert Owino Juma, A&T Kearney sponsorship; Falling Walls Conference, Berlin, Germany
2010, Albert Owino Juma, DAAD Scholarship for Doctoral studies, Germany
2009, Albert Owino Juma, Tutorial Fellowship, MasenoUniversity, Kenya
2004, Albert Owino Juma, Graduate Assistantship, Maseno University, Kenya
 
 
Teadustöö põhisuunad
VALDKOND: 4. Loodusteadused ja tehnika; 4.10. Füüsika; CERCS ERIALA: P260 Tahke aine: elektrooniline struktuur, elektrilised, magneetilised ja optilised omadused, ülijuhtivus, magnetresonants, spektroskoopia
VALDKOND: 4. Loodusteadused ja tehnika; 4.10. Füüsika; CERCS ERIALA: P265 Pooljuhtide füüsika
VALDKOND: 4. Loodusteadused ja tehnika; 4.12. Protsessitehnoloogia ja materjaliteadus; CERCS ERIALA: T150 Materjalitehnoloogia
 
 
Lisainfo
Conference Presentations: Oral and poster
Albert Juma, Breaking the wall of photovoltaic materials, Finalist at Falling Walls Lab contest, Berlin, Germany, 8 – 9th November, 2013.
Juma, R. Sáez-Araoz, Ch-H. Fischer, and Th. Dittrich. Copper diffusion in In2S3 layers deposited by spray-ion layer gas reaction (ILGAR) method. DPG Spring Meeting Regensburg, Germany. 10 - 15 March, 2013. Session DS 23.8.
Albert Owino Juma, Rodrigo Sáez-Araoz, Christian-Herbert Fischer and Thomas Dittrich, Diffusion of copper in In2S3 layers prepared by ion layer gas reaction method, EMRS spring meeting, Strasbourg, France. 27-31 May, 2013. Session D.PII-24.
Albert O. Juma, Anahita Azarpira, Rodrigo Sàez Araoz, Christian-Herbert Fischer, and Thomas Dittrich, Penetration of In2S3 and Sb2S3 deposited by ion layer gas reaction into nanoporous -TiO2, EMRS spring meeting, Strasbourg, France. 27-31 May, 2013. Session F.P2-31.
A. Juma, A. Azarpira,Ch-H. Fischer, and Th. Dittrich. Role of Cl in In2S3 for band alignment at nanoporous-TiO2 / In2S3 interfaces. DPG Spring Meeting Regensburg, Germany. 10 - 15 March, 2013. Session DS 32.53.
A.O. Juma, P. Pistor, S. Fengler, Th. Dittrich, E. Wendler. Diffusion of Cu (I) in In2S3 thin films investigated by Rutherford backscattering spectroscopy (RBS). 76th Annual Meeting of the DPG and Spring Meeting, Berlin, Germany. 25 - 30 of March, 2012. Session HL 40.7.
A. Juma, P. Pistor, B. Latzel, K. Schwarzburg and Th. Dittrich. Formation of a disordered heterojunction by diffusion of Cu(I) from CuSCN into In2S3 layers: a surface photovoltage study. 13th International conference on formation of semiconductor interfaces (ICFSI-13), Prague, Czech Republic. 3 – 8 July, 2011, Session 17614.
2012 - 2014: Research cooperation with Prof. Elke Wendler, Institute of solid state physics, University of Jena, Germany on Rutherford Backscattering Spectrometry (RBS) measurements.

Lõppenud projektid

Publikatsioonid

Klass
Aasta
Publikatsioon
 
1.1.
2014
Juma, A.; Wafula, H.; Fischer, C-H.; Wendler, E.; Dittrich, T. (2014). Meyer-Neldel rule for Cu(I) diffusion in In2S3 layers. Journal of Applied Physics, 115, 053703.10.1063/1.4864125.
1.1.
2014
Juma, A.; Azarpira, A.; Fischer, C-H.; Wendler, E.; Dittrich, T. (2014). Formation of inorganic nanocomposites by filling TiO2 nanopores with indium and antimony sulfide precursor aerosols. Thin Solid Films, 566, 19−22.10.1016/j.tsf.2014.07.020.
2.3.
2014
Juma, A. (2014). Copper diffusion in In2 S3 and charge separation at In2S3/CuSCN and TiO2/In2S3 interfaces. (Freie Universität Berlin). Germany: Freie Universität Berlin.
1.1.
2013
Juma, A.; Azarpira, A.; Steigert, A.; Pomaska, M.; Fischer, C-H.; Lauermann, I.; Dittrich, T. (2013). Role of chlorine on In2S3 for band alignment at nanoporous-TiO2/In2S3 interfaces. Journal of Applied Physics, 114, 053711.10.1063/1.4817766.
1.1.
2012
Juma, A.; Kavalakkatt, J.; Pistor, P.; Latzel, B.; Schwarzburg, K.; Dittrich, T. (2012). Formation of a disordered hetero-junction by diffusion of Cu (I) from CuSCN into In2S3 layers: A surface photovoltage study. Physica Status Solidi A - Applications and Materials Science, 209, 663−668.10.1002/pssa.201100509.
1.1.
2012
Juma, A. O.; Pistor, P.; Fengler, S.; Dittrich, T.; Wendle, E. (2012). Copper diffusion in thin In2S3 layers investigated by Rutherford Backscattering Spectroscopy. Thin Solid Films, 520, 6740−6743.10.1016/j.tsf.2012.07.042.
1.1.
2007
Ochieng’, R.M.; Onyango, F.N.; Owino, A.J (2007). Determination of global absorptivity and emissivity of some opaque bulk materials using an integrating sphere calorimeter without ports. Measurement Science and Technology, 18 (8), 2667−2672.10.1088/0957-0233/18/8/043.
22.04.2019

Albert Owino Juma

https://www.etis.ee/CV/Albert Owino_Juma/eng
7.09.1979
620 3369
albert.juma@ttu.ee
Total number of publications 7; Publications found in web of science 5 (2012-2014); number of citations 8; h-index 2.

Career

Institution(s) and position(s)
01.05.2014–31.12.2014   
Tallinn University of Technology , Faculty of Chemical and Materials Technology, Department of Materials Science, Laboratory of Thin Film Chemical Technologies, Post-Doc (1,00)
01.01.2009–31.12.2014   
Maseno University, Faculty of Science, Department of Physics and Materials Science; Tutorial Fellow
01.01.2004–31.12.2004   
Shitoto Girls Secondary School; Graduate Teacher
01.01.2004–31.12.2009   
Maseno University, Faculty of Science, Department of Physics and Materials Science; Graduate Assistant
 
 
Education
2010–2013   
PhD; Free University Berlin & Helmholtz-Centre Berlin for Materials and Energy
2005–2009   
Masters; Maseno University, Faculty of Science, Department of Physics and Materials Science
1999–2004   
Bachelors; Maseno University, Faculty of Science, Department of Physics and Materials Science
 
 
R&D related managerial and administrative work
2012−2014   
Laboratory experiments for the course "Semiconductor Physics: Concepts in photovoltaic solar energy conversion" given by PD Dr. Thomas Dittrich, Physics Department, Free University Berlin.
2005−2010   
Student Advisor, Department of Physics and Materials Science, Maseno University
2005−2010   
Undergraduate physics laboratory experiments for the courses; Optics, mechanics, oscillations and waves, structure and properties of matter, electricity and magnetism, electronics, in Department of Physics and Materials Science, Maseno University.
 
 
Creative work
Developed a pneumatic spin-spray setup system for deposition of CuSCN thin films from a propyl sulfide solution during PhD studies. .
Developed a wet chemical method for etching CuSCN thin films during PhD studies. .
Built circuit to run an automatic temperature controller for domestic use as my undergraduate project..
 
 
Additional career information
Invited talks and presentations:
Department of Materials Science, Tallinn University of Technology, Title: "Copper diffusion in In2S3 and charge separation at In2S3/CuSCN and TiO2/In2S3 interfaces" 14 May 2014.
Sketches of Science exhibition: Photo session with Nobel Laureates, Nobel Museum in collaboration with the Foundation Lindau Nobelprizewinners Meetings at Lake Constance; Landesvertrendung, Baden – Wurtemberg, Berlin.Role: One of the panelists in the interview session (by invitation)
Ultrafast Surface Dynamics Group; Department of Physics, Freie Universät Berlin, Title: "Investigation of ultra-thin charge selective contacts for nanocomposite TiO2/In2S3/CuSCN solar cells"
Researchers Forum 2/2012: Focus on Energy Technology. TSB Technologiestiftung Berlin. Title: "Experiences of a vising scholar in Berlin, Germany (Guest speaker)".
Department of Physics and Astronomy, Friedrich – Schiller - Universität, Jena. Title: "Investigation of ultra-thin In2S3/CuSCN charge selective contacts for nanostructured solar cells". ;
May-November 2012: Co-supervised Masters student; Anahita Azarpira. Thesis title: "Spray ILGAR (ion layer gas reaction) deposition of In2S3 and Sb2S3 into nanoporous TiO2". Submitted for Master of Science in Global Production Engineering (GPE) at the Technische Universität Berlin. ;
Aug. 2014: Short course trainer for "Solar photovoltaic installation, maintenance and entrepreneurship" , University of Nairobi, Kenya. ;

Qualifications

Honours & awards
2013, Albert Owino Juma, A&T Kearney sponsorship; Falling Walls Conference, Berlin, Germany
2010, Albert Owino Juma, DAAD Scholarship for Doctoral studies, Germany
2009, Albert Owino Juma, Tutorial Fellowship, MasenoUniversity, Kenya
2004, Albert Owino Juma, Graduate Assistantship, Maseno University, Kenya
 
 
Field of research
FIELD OF RESEARCH: 4. Natural Sciences and Engineering; 4.10. Physics and Technical Physics; CERCS SPECIALITY: P260 Condensed matter: electronic structure, electrical, magnetic and optical properties, supraconductors, magnetic resonance, relaxation, spectroscopy
FIELD OF RESEARCH: 4. Natural Sciences and Engineering; 4.10. Physics and Technical Physics; CERCS SPECIALITY: P265 Semiconductory physics
FIELD OF RESEARCH: 4. Natural Sciences and Engineering; 4.12. Process Technology and Materials Science; CERCS SPECIALITY: T150 Material technology
 
 
Additional information
Conference Presentations: Oral and poster
Albert Juma, Breaking the wall of photovoltaic materials, Finalist at Falling Walls Lab contest, Berlin, Germany, 8 – 9th November, 2013.
Juma, R. Sáez-Araoz, Ch-H. Fischer, and Th. Dittrich. Copper diffusion in In2S3 layers deposited by spray-ion layer gas reaction (ILGAR) method. DPG Spring Meeting Regensburg, Germany. 10 - 15 March, 2013. Session DS 23.8.
Albert Owino Juma, Rodrigo Sáez-Araoz, Christian-Herbert Fischer and Thomas Dittrich, Diffusion of copper in In2S3 layers prepared by ion layer gas reaction method, EMRS spring meeting, Strasbourg, France. 27-31 May, 2013. Session D.PII-24.
Albert O. Juma, Anahita Azarpira, Rodrigo Sàez Araoz, Christian-Herbert Fischer, and Thomas Dittrich, Penetration of In2S3 and Sb2S3 deposited by ion layer gas reaction into nanoporous -TiO2, EMRS spring meeting, Strasbourg, France. 27-31 May, 2013. Session F.P2-31.
A. Juma, A. Azarpira,Ch-H. Fischer, and Th. Dittrich. Role of Cl in In2S3 for band alignment at nanoporous-TiO2 / In2S3 interfaces. DPG Spring Meeting Regensburg, Germany. 10 - 15 March, 2013. Session DS 32.53.
A.O. Juma, P. Pistor, S. Fengler, Th. Dittrich, E. Wendler. Diffusion of Cu (I) in In2S3 thin films investigated by Rutherford backscattering spectroscopy (RBS). 76th Annual Meeting of the DPG and Spring Meeting, Berlin, Germany. 25 - 30 of March, 2012. Session HL 40.7.
A. Juma, P. Pistor, B. Latzel, K. Schwarzburg and Th. Dittrich. Formation of a disordered heterojunction by diffusion of Cu(I) from CuSCN into In2S3 layers: a surface photovoltage study. 13th International conference on formation of semiconductor interfaces (ICFSI-13), Prague, Czech Republic. 3 – 8 July, 2011, Session 17614.
2012 - 2014: Research cooperation with Prof. Elke Wendler, Institute of solid state physics, University of Jena, Germany on Rutherford Backscattering Spectrometry (RBS) measurements.

Completed projects

Publications

Category
Year
Publication
 
1.1.
2014
Juma, A.; Wafula, H.; Fischer, C-H.; Wendler, E.; Dittrich, T. (2014). Meyer-Neldel rule for Cu(I) diffusion in In2S3 layers. Journal of Applied Physics, 115, 053703.10.1063/1.4864125.
1.1.
2014
Juma, A.; Azarpira, A.; Fischer, C-H.; Wendler, E.; Dittrich, T. (2014). Formation of inorganic nanocomposites by filling TiO2 nanopores with indium and antimony sulfide precursor aerosols. Thin Solid Films, 566, 19−22.10.1016/j.tsf.2014.07.020.
2.3.
2014
Juma, A. (2014). Copper diffusion in In2 S3 and charge separation at In2S3/CuSCN and TiO2/In2S3 interfaces. (Freie Universität Berlin). Germany: Freie Universität Berlin.
1.1.
2013
Juma, A.; Azarpira, A.; Steigert, A.; Pomaska, M.; Fischer, C-H.; Lauermann, I.; Dittrich, T. (2013). Role of chlorine on In2S3 for band alignment at nanoporous-TiO2/In2S3 interfaces. Journal of Applied Physics, 114, 053711.10.1063/1.4817766.
1.1.
2012
Juma, A.; Kavalakkatt, J.; Pistor, P.; Latzel, B.; Schwarzburg, K.; Dittrich, T. (2012). Formation of a disordered hetero-junction by diffusion of Cu (I) from CuSCN into In2S3 layers: A surface photovoltage study. Physica Status Solidi A - Applications and Materials Science, 209, 663−668.10.1002/pssa.201100509.
1.1.
2012
Juma, A. O.; Pistor, P.; Fengler, S.; Dittrich, T.; Wendle, E. (2012). Copper diffusion in thin In2S3 layers investigated by Rutherford Backscattering Spectroscopy. Thin Solid Films, 520, 6740−6743.10.1016/j.tsf.2012.07.042.
1.1.
2007
Ochieng’, R.M.; Onyango, F.N.; Owino, A.J (2007). Determination of global absorptivity and emissivity of some opaque bulk materials using an integrating sphere calorimeter without ports. Measurement Science and Technology, 18 (8), 2667−2672.10.1088/0957-0233/18/8/043.
22.04.2019
Detailne otsing
  • Leitud 1 kirjet
ProgrammLiikNumberNimiProjekti algusProjekti lõppVastutav täitjaAsutusFinantseerijapoolne rahastamine
MUUB24Keemilistel meetoditel kasvatatud metalli oksiidide õhukesed kiled elektroonikaseadistele01.01.201331.12.2015Ilona Oja AçikTallinna Tehnikaülikool; Tallinna Tehnikaülikool, Keemia ja materjalitehnoloogia teaduskond, Materjaliteaduse instituut, Keemiliste kiletehnoloogiate teaduslaboratoorium 60 000,00 EUR