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A Methodology to Analyze Surface Recombination Velocity and Other Properties of Cadmium Telluride Using Time Resolved Photoluminescence

Johnson, Brady Allen
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1448881819

Abstract Details

2015, Master of Science, University of Toledo, Electrical Engineering.
The ability to develop a methodology to extract low level parameters such as surface and bulk recombination velocities can lead to the improvements in single and polycrystalline Cadmium Telluride (CdTe) solar cell performance. Given the importance of CdTe solar cells being a competitive photovoltaic material, the ability to quickly determine such low level parameters plays a key role in enabling further improvements of the conversion efficiency. CdTe has shown its advantages of offering a low cost solution at large manufacturing scales while still displaying comparable or better efficiencies to multi-crystalline silicon that dominates today’s market. The work presented here can have a direct industrial and economic impact in further enhancing those advantages. This study focuses on extracting surface recombination velocities (Sf) along with bulk recombination velocities (Sb), minority carrier lifetimes (t) and mobility. The approach is based on a non-contact and non-destructive Time-Resolved Photoluminscence (TRPL) spectroscopy. Our methodology consists of solving for the carrier concentration using the time dependent continuity equation, two boundary iv conditions, the initial condition and an error minimization procedure to obtain those low level parameters. This Matlab analysis software proved to be a useful addition to the standard TRPL software package. After a measurement is acquired, then analyzed by this software, a new more in-depth look at the materials quality is brought to light by extracting these parameters. The analysis method provided a novel way of constantly extracting these semiconductor properties.
Daniel Georgiev (Advisor)
Jung Kim (Committee Member)
Vijaya Devabhaktuni (Committee Member)
Electrical Engineering

Recommended Citations

Citations

  • Johnson, B. A. (2015). A Methodology to Analyze Surface Recombination Velocity and Other Properties of Cadmium Telluride Using Time Resolved Photoluminescence [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1448881819

    APA Style (7th edition)

  • Johnson, Brady. A Methodology to Analyze Surface Recombination Velocity and Other Properties of Cadmium Telluride Using Time Resolved Photoluminescence. 2015. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1448881819.

    MLA Style (8th edition)

  • Johnson, Brady. "A Methodology to Analyze Surface Recombination Velocity and Other Properties of Cadmium Telluride Using Time Resolved Photoluminescence." Master's thesis, University of Toledo, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1448881819

    Chicago Manual of Style (17th edition)

toledo1448881819
589
© , some rights reserved.Creative Commons License A Methodology to Analyze Surface Recombination Velocity and Other Properties of Cadmium Telluride Using Time Resolved Photoluminescence by Brady Allen Johnson is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Toledo and OhioLINK.