Measurement of Variation of Minority Carrier Lifetime in 8 MeV Electron Irradiated c-Si Solar Cells Using RRT Method

  • Sathyanarayana Bhat P
  • Asha Rao
  • Sheeja Krishnan
  • Ganesh Sanjeev
  • Suresh E. Puthanveettil
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


The variation of minority carrier lifetime in c-Si solar cells due to the irradiation of 8 MeV electrons of various doses ranging from 5 to 100 kGy was studied. The minority carrier lifetime and diffusion length of c-Si solar cells were determined before and after irradiation using the reverse recovery transient (RRT) method. The minority carrier lifetime is found to decrease with increasing electron dose, which is interpreted as due to the creation of non-radiative recombination centers which affects the diffusion current. The minority carrier diffusion length decreases exponentially with electron dose. The reduction in diffusion length due to electron irradiation will reduce the conversion efficiency of solar cells.


Solar cell Efficiency Carrier lifetime and diffusion length 


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The authors thank the Staff and Research Scholars of Microtron Centre, Mangalore University, for their help during irradiation. The authors gratefully acknowledge DAE-BRNS, for the financial assistance. The authors thank ISRO satellite centre, Bangalore for providing the solar cells. The authors gratefully acknowledge the support and encouragement given by the Management of Mangalore Institute of Technology and Engineering, Moodbidri.


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Sathyanarayana Bhat P
    • 1
  • Asha Rao
    • 1
  • Sheeja Krishnan
    • 2
  • Ganesh Sanjeev
    • 3
  • Suresh E. Puthanveettil
    • 4
  1. 1.Department of PhysicsMangalore Institute of Technology and EngineeringMoodabidri, MangaloreIndia
  2. 2.Department of PhysicsSri Devi Institute of TechnologyKenjar, MangaloreIndia
  3. 3.Microtron Centre, Department of PhysicsMangalore UniversityMangaloreIndia
  4. 4.Solar Panel DivisionISRO Satellite CentreBangaloreIndia

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