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Title: Study of Effects of Cl and Se in CdSeTe Solar Cells Using Scanning Transmission Electron Microscopy

Abstract

Solar cells based on poly-crystalline CdTe thin films are a leading candidate for low-cost conversion of solar energy due to their near optimum band gap, high absorption coefficient and ease of manufacturing. Due to non-radiative Shockley-Read-Hall (SRH) recombination at grain boundaries (GBs), dislocations, and point defects, current CdTe-based solar cell efficiency appears to be limited to ~22%, which is still below the theoretical limit (~30%). It is well known that CdCl 2 annealing is essential for high performing CdTe solar cells due to grain recrystallization and passivation of defect states within the band gap by Cl atoms. Incorporating Se into CdTe to form an alloyed CdSeTe solar cells also shows a high overall efficiency. Simultaneous addition of Cl and Se can further improve the efficiencies of CdTe solar cells, but yet a comprehensive experimental and theoretical study of effects of Cl and Se in CdSeTe solar cell is absent.

Authors:
 [1];  [2];  [2];  [3];  [4];  [4];  [2]; ORCiD logo [1]
  1. Univ. of Illinois at Chicago, Chicago, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Colorado State Univ., Fort Collins, CO (United States)
Publication Date:
Research Org.:
Univ. of Illinois, Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1576759
Grant/Contract Number:  
[EE0007545]
Resource Type:
Accepted Manuscript
Journal Name:
Microscopy and Microanalysis
Additional Journal Information:
[ Journal Volume: 25; Journal Issue: S2; Conference: Microscopy and Microanalyis 2019, Portland, OR (United States)]; Journal ID: ISSN 1431-9276
Publisher:
Microscopy Society of America (MSA)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; STEM; CdTe

Citation Formats

Guo, Jinglong, Sen, Fatih G., Mannodi-Kannakithodi, Arun, Barnard, Edward S., Sampath, W., Munshi, Amit, Chan, Maria K. Y., and Klie, Robert F. Study of Effects of Cl and Se in CdSeTe Solar Cells Using Scanning Transmission Electron Microscopy. United States: N. p., 2019. Web. doi:10.1017/S1431927619011486.
Guo, Jinglong, Sen, Fatih G., Mannodi-Kannakithodi, Arun, Barnard, Edward S., Sampath, W., Munshi, Amit, Chan, Maria K. Y., & Klie, Robert F. Study of Effects of Cl and Se in CdSeTe Solar Cells Using Scanning Transmission Electron Microscopy. United States. doi:10.1017/S1431927619011486.
Guo, Jinglong, Sen, Fatih G., Mannodi-Kannakithodi, Arun, Barnard, Edward S., Sampath, W., Munshi, Amit, Chan, Maria K. Y., and Klie, Robert F. Mon . "Study of Effects of Cl and Se in CdSeTe Solar Cells Using Scanning Transmission Electron Microscopy". United States. doi:10.1017/S1431927619011486.
@article{osti_1576759,
title = {Study of Effects of Cl and Se in CdSeTe Solar Cells Using Scanning Transmission Electron Microscopy},
author = {Guo, Jinglong and Sen, Fatih G. and Mannodi-Kannakithodi, Arun and Barnard, Edward S. and Sampath, W. and Munshi, Amit and Chan, Maria K. Y. and Klie, Robert F.},
abstractNote = {Solar cells based on poly-crystalline CdTe thin films are a leading candidate for low-cost conversion of solar energy due to their near optimum band gap, high absorption coefficient and ease of manufacturing. Due to non-radiative Shockley-Read-Hall (SRH) recombination at grain boundaries (GBs), dislocations, and point defects, current CdTe-based solar cell efficiency appears to be limited to ~22%, which is still below the theoretical limit (~30%). It is well known that CdCl2 annealing is essential for high performing CdTe solar cells due to grain recrystallization and passivation of defect states within the band gap by Cl atoms. Incorporating Se into CdTe to form an alloyed CdSeTe solar cells also shows a high overall efficiency. Simultaneous addition of Cl and Se can further improve the efficiencies of CdTe solar cells, but yet a comprehensive experimental and theoretical study of effects of Cl and Se in CdSeTe solar cell is absent.},
doi = {10.1017/S1431927619011486},
journal = {Microscopy and Microanalysis},
number = [S2],
volume = [25],
place = {United States},
year = {2019},
month = {8}
}

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