Solution-Processed Air-Stable Mesoscopic Selenium Solar Cells
Abstract
Crystalline selenium (c-Se) is a direct band gap semiconductor and has been developed for detector applications for more than 30 years. While most advances have been made using vacuum deposition processes, it remains a challenge to prepare efficient c-Se devices directly from solution. We demonstrate a simple solution process leading to uniform and high-crystallinity selenium films under ambient conditions. A combination of ethylenediamine (EDA) and hydrazine solvents was found to be effective in dissolving selenium powder and forming highly concentrated solutions. These can be used to infiltrate a mesoporous titanium dioxide layer and form a smooth and pinhole-free capping overlayer. Efficient light-induced charge injection from the crystalline selenium to TiO2 was observed using transient absorption spectroscopy. A small amount of EDA addition in the hydrazine solution was found to improve the film coverage significantly, and on the basis of the finding, we are able to achieve up to 3.52% power conversion efficiency solar cells with a fill factor of 57%. Lastly, these results provide a method to control the crystalline selenium film and represent significant progress in developing low-cost selenium-based solar cells.
- Authors:
-
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150090, China, Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150090, China
- Publication Date:
- Research Org.:
- Northwestern Univ., Evanston, IL (United States); Energy Frontier Research Centers (EFRC) (United States). Argonne-Northwestern Solar Energy Research Center (ANSER)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1282423
- Alternate Identifier(s):
- OSTI ID: 1314039
- Grant/Contract Number:
- SC0001059
- Resource Type:
- Published Article
- Journal Name:
- ACS Energy Letters
- Additional Journal Information:
- Journal Name: ACS Energy Letters Journal Volume: 1 Journal Issue: 2; Journal ID: ISSN 2380-8195
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 36 MATERIALS SCIENCE
Citation Formats
Zhu, Menghua, Hao, Feng, Ma, Lin, Song, Tze-Bin, Miller, Claire E., Wasielewski, Michael R., Li, Xin, and Kanatzidis, Mercouri G. Solution-Processed Air-Stable Mesoscopic Selenium Solar Cells. United States: N. p., 2016.
Web. doi:10.1021/acsenergylett.6b00249.
Zhu, Menghua, Hao, Feng, Ma, Lin, Song, Tze-Bin, Miller, Claire E., Wasielewski, Michael R., Li, Xin, & Kanatzidis, Mercouri G. Solution-Processed Air-Stable Mesoscopic Selenium Solar Cells. United States. https://doi.org/10.1021/acsenergylett.6b00249
Zhu, Menghua, Hao, Feng, Ma, Lin, Song, Tze-Bin, Miller, Claire E., Wasielewski, Michael R., Li, Xin, and Kanatzidis, Mercouri G. Thu .
"Solution-Processed Air-Stable Mesoscopic Selenium Solar Cells". United States. https://doi.org/10.1021/acsenergylett.6b00249.
@article{osti_1282423,
title = {Solution-Processed Air-Stable Mesoscopic Selenium Solar Cells},
author = {Zhu, Menghua and Hao, Feng and Ma, Lin and Song, Tze-Bin and Miller, Claire E. and Wasielewski, Michael R. and Li, Xin and Kanatzidis, Mercouri G.},
abstractNote = {Crystalline selenium (c-Se) is a direct band gap semiconductor and has been developed for detector applications for more than 30 years. While most advances have been made using vacuum deposition processes, it remains a challenge to prepare efficient c-Se devices directly from solution. We demonstrate a simple solution process leading to uniform and high-crystallinity selenium films under ambient conditions. A combination of ethylenediamine (EDA) and hydrazine solvents was found to be effective in dissolving selenium powder and forming highly concentrated solutions. These can be used to infiltrate a mesoporous titanium dioxide layer and form a smooth and pinhole-free capping overlayer. Efficient light-induced charge injection from the crystalline selenium to TiO2 was observed using transient absorption spectroscopy. A small amount of EDA addition in the hydrazine solution was found to improve the film coverage significantly, and on the basis of the finding, we are able to achieve up to 3.52% power conversion efficiency solar cells with a fill factor of 57%. Lastly, these results provide a method to control the crystalline selenium film and represent significant progress in developing low-cost selenium-based solar cells.},
doi = {10.1021/acsenergylett.6b00249},
journal = {ACS Energy Letters},
number = 2,
volume = 1,
place = {United States},
year = {Thu Aug 04 00:00:00 EDT 2016},
month = {Thu Aug 04 00:00:00 EDT 2016}
}
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https://doi.org/10.1021/acsenergylett.6b00249
https://doi.org/10.1021/acsenergylett.6b00249
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Cited by: 32 works
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