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Structure and electronic properties of grain boundaries in earth-abundant photovoltaic absorber Cu2ZnSnSe4.

Publication ,  Journal Article
Li, J; Mitzi, DB; Shenoy, VB
Published in: ACS nano
November 2011

We have studied the atomic and electronic structure of Cu(2)ZnSnSe(4) and CuInSe(2) grain boundaries using first-principles calculations. We find that the constituent atoms at the grain boundary in Cu(2)ZnSnSe(4) create localized defect states that promote the recombination of photon-excited electron and hole carriers. In distinct contrast, significantly lower density of defect states is found at the grain boundaries in CuInSe(2), which is consistent with the experimental observation that CuInSe(2) solar cells exhibit high conversion efficiency without the need for deliberate passivation. Our investigations suggest that it is essential to effectively remove these defect states in order to improve the conversion efficiency of solar cells with Cu(2)ZnSnSe(4) as photovoltaic absorber materials.

Duke Scholars

Published In

ACS nano

DOI

EISSN

1936-086X

ISSN

1936-0851

Publication Date

November 2011

Volume

5

Issue

11

Start / End Page

8613 / 8619

Related Subject Headings

  • Nanoscience & Nanotechnology
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Li, J., Mitzi, D. B., & Shenoy, V. B. (2011). Structure and electronic properties of grain boundaries in earth-abundant photovoltaic absorber Cu2ZnSnSe4. ACS Nano, 5(11), 8613–8619. https://doi.org/10.1021/nn203230g
Li, Junwen, David B. Mitzi, and Vivek B. Shenoy. “Structure and electronic properties of grain boundaries in earth-abundant photovoltaic absorber Cu2ZnSnSe4.ACS Nano 5, no. 11 (November 2011): 8613–19. https://doi.org/10.1021/nn203230g.
Li, Junwen, et al. “Structure and electronic properties of grain boundaries in earth-abundant photovoltaic absorber Cu2ZnSnSe4.ACS Nano, vol. 5, no. 11, Nov. 2011, pp. 8613–19. Epmc, doi:10.1021/nn203230g.
Journal cover image

Published In

ACS nano

DOI

EISSN

1936-086X

ISSN

1936-0851

Publication Date

November 2011

Volume

5

Issue

11

Start / End Page

8613 / 8619

Related Subject Headings

  • Nanoscience & Nanotechnology