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Title: Solution-Processed Air-Stable Mesoscopic Selenium Solar Cells

Authors:
 [1];  [2];  [2];  [2];  [2];  [2];  [3];  [2]
  1. 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
  2. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
  3. School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150090, China
Publication Date:
Research Org.:
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) (SC-22)
OSTI Identifier:
1388189
DOE Contract Number:
SC0001059
Resource Type:
Journal Article
Resource Relation:
Journal Name: ACS Energy Letters; Journal Volume: 1; Journal Issue: 2; Related Information: ANSER partners with Northwestern University (lead); Argonne National Laboratory; University of Chicago; University of Illinois, Urbana-Champaign; Yale University
Country of Publication:
United States
Language:
English
Subject:
catalysis (homogeneous), catalysis (heterogeneous), solar (photovoltaic), solar (fuels), photosynthesis (natural and artificial), bio-inspired, hydrogen and fuel cells, electrodes - solar, defects, charge transport, spin dynamics, membrane, materials and chemistry by design, optics, synthesis (novel materials), synthesis (self-assembly)

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. doi: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.. Wed . "Solution-Processed Air-Stable Mesoscopic Selenium Solar Cells". United States. doi:10.1021/acsenergylett.6b00249.
@article{osti_1388189,
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 = {},
doi = {10.1021/acsenergylett.6b00249},
journal = {ACS Energy Letters},
number = 2,
volume = 1,
place = {United States},
year = {Wed Aug 03 00:00:00 EDT 2016},
month = {Wed Aug 03 00:00:00 EDT 2016}
}
  • 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.more » Efficient light-induced charge injection from the crystalline selenium to TiO 2 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.« less
  • 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.more » Efficient light-induced charge injection from the crystalline selenium to TiO 2 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.« less