Boron Doped diamond films as electron donors in photovoltaics: An X-ray absorption and hard X-ray photoemission study
Abstract
Highly boron-doped diamond films are investigated for their potential as transparent electron donors in solar cells. Specifically, the valence band offset between a diamond film (as electron donor) and Cu(In,Ga)Se2 (CIGS) as light absorber is determined by a combination of soft X-ray absorption spectroscopy and hard X-ray photoelectron spectroscopy, which is more depth-penetrating than standard soft X-ray photoelectron spectroscopy. In addition, a theoretical analysis of the valence band is performed, based on GW quasiparticle band calculations. The valence band offset is found to be small: VBO = VBMCIGS – VBMdiamond = 0.3 eV ± 0.1 eV at the CIGS/Diamond interface and 0.0 eV ± 0.1 eV from CIGS to bulk diamond. These results provide a promising starting point for optimizing the band offset by choosing absorber materials with a slightly lower valence band maximum.
- Authors:
- Publication Date:
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1420720
- Grant/Contract Number:
- FG02-01ER45917; SC0006931
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Name: Journal of Applied Physics Journal Volume: 116 Journal Issue: 14; Journal ID: ISSN 0021-8979
- Publisher:
- American Institute of Physics
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Kapilashrami, M., Conti, G., Zegkinoglou, I., Nemšák, S., Conlon, C. S., Törndahl, T., Fjällström, V., Lischner, J., Louie, Steven G., Hamers, R. J., Zhang, L., Guo, J. -H., Fadley, C. S., and Himpsel, F. J. Boron Doped diamond films as electron donors in photovoltaics: An X-ray absorption and hard X-ray photoemission study. United States: N. p., 2014.
Web. doi:10.1063/1.4897166.
Kapilashrami, M., Conti, G., Zegkinoglou, I., Nemšák, S., Conlon, C. S., Törndahl, T., Fjällström, V., Lischner, J., Louie, Steven G., Hamers, R. J., Zhang, L., Guo, J. -H., Fadley, C. S., & Himpsel, F. J. Boron Doped diamond films as electron donors in photovoltaics: An X-ray absorption and hard X-ray photoemission study. United States. https://doi.org/10.1063/1.4897166
Kapilashrami, M., Conti, G., Zegkinoglou, I., Nemšák, S., Conlon, C. S., Törndahl, T., Fjällström, V., Lischner, J., Louie, Steven G., Hamers, R. J., Zhang, L., Guo, J. -H., Fadley, C. S., and Himpsel, F. J. Wed .
"Boron Doped diamond films as electron donors in photovoltaics: An X-ray absorption and hard X-ray photoemission study". United States. https://doi.org/10.1063/1.4897166.
@article{osti_1420720,
title = {Boron Doped diamond films as electron donors in photovoltaics: An X-ray absorption and hard X-ray photoemission study},
author = {Kapilashrami, M. and Conti, G. and Zegkinoglou, I. and Nemšák, S. and Conlon, C. S. and Törndahl, T. and Fjällström, V. and Lischner, J. and Louie, Steven G. and Hamers, R. J. and Zhang, L. and Guo, J. -H. and Fadley, C. S. and Himpsel, F. J.},
abstractNote = {Highly boron-doped diamond films are investigated for their potential as transparent electron donors in solar cells. Specifically, the valence band offset between a diamond film (as electron donor) and Cu(In,Ga)Se2 (CIGS) as light absorber is determined by a combination of soft X-ray absorption spectroscopy and hard X-ray photoelectron spectroscopy, which is more depth-penetrating than standard soft X-ray photoelectron spectroscopy. In addition, a theoretical analysis of the valence band is performed, based on GW quasiparticle band calculations. The valence band offset is found to be small: VBO = VBMCIGS – VBMdiamond = 0.3 eV ± 0.1 eV at the CIGS/Diamond interface and 0.0 eV ± 0.1 eV from CIGS to bulk diamond. These results provide a promising starting point for optimizing the band offset by choosing absorber materials with a slightly lower valence band maximum.},
doi = {10.1063/1.4897166},
journal = {Journal of Applied Physics},
number = 14,
volume = 116,
place = {United States},
year = {Wed Oct 08 00:00:00 EDT 2014},
month = {Wed Oct 08 00:00:00 EDT 2014}
}
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