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Title: 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:
 [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.:
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. https://doi.org/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. Wed . "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 = {2016},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1021/acsenergylett.6b00249

Citation Metrics:
Cited by: 6 works
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Works referencing / citing this record:

Modern Processing and Insights on Selenium Solar Cells: The World's First Photovoltaic Device
journal, February 2019

  • Hadar, Ido; Song, Tze‐Bin; Ke, Weijun
  • Advanced Energy Materials, Vol. 9, Issue 16
  • DOI: 10.1002/aenm.201802766

Ultrathin high band gap solar cells with improved efficiencies from the world’s oldest photovoltaic material
journal, September 2017


Elemental Se: fundamentals and its optoelectronic applications
journal, January 2019

  • Zhu, Menghua; Niu, Guangda; Tang, Jiang
  • Journal of Materials Chemistry C, Vol. 7, Issue 8
  • DOI: 10.1039/c8tc05873c