Solvent-Mediated Crystallization of CH3NH3SnI3 Films for Heterojunction Depleted Perovskite Solar Cells
Abstract
Organo-lead halide perovskite solar cells have gained enormous significance and have now achieved power conversion efficiencies of ~20%. However, the potential toxicity of lead in these systems raises environmental concerns for widespread deployment. In this work we investigate solvent effects on the crystallization of the lead-free methylammonium tin triiodide (CH3NH3SnI3) perovskite films in a solution growth process. Highly uniform, pinhole-free perovskite films are obtained from a dimethyl sulfoxide (DMSO) solution via a transitional SnI2·3DMSO intermediate phase. This high-quality perovskite film enables the realization of heterojunction depleted solar cells based on mesoporous TiO2 layer but in the absence of any hole-transporting material with an unprecedented photocurrent up to 21 mA cm–2. Charge extraction and transient photovoltage decay measurements reveal high carrier densities in the CH3NH3SnI3 perovskite device which are one order of magnitude larger than CH3NH3PbI3-based devices but with comparable recombination lifetimes in both devices. The relatively high background dark carrier density of the Sn-based perovskite is responsible for the lower photovoltaic efficiency in comparison to the Pb-based analogues. These results provide important progress toward achieving improved perovskite morphology control in realizing solution-processed highly efficient lead-free perovskite solar cells.
- Authors:
-
- Energy Frontier Research Centers (EFRC) (United States). Argonne-Northwestern Solar Energy Research Center (ANSER); Northwestern Univ., Evanston, IL (United States)
- 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); National Science Foundation (NSF); State of Illinois
- OSTI Identifier:
- 1386526
- Grant/Contract Number:
- SC0001059
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the American Chemical Society
- Additional Journal Information:
- Journal Volume: 137; Journal Issue: 35; Related Information: ANSER partners with Northwestern University (lead); Argonne National Laboratory; University of Chicago; University of Illinois, Urbana-Champaign; Yale University; Journal ID: ISSN 0002-7863
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 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); crystallization; layers; solvents; solar cells; perovskites
Citation Formats
Hao, Feng, Stoumpos, Constantinos C., Guo, Peijun, Zhou, Nanjia, Marks, Tobin J., Chang, Robert P. H., and Kanatzidis, Mercouri G. Solvent-Mediated Crystallization of CH3NH3SnI3 Films for Heterojunction Depleted Perovskite Solar Cells. United States: N. p., 2015.
Web. doi:10.1021/jacs.5b06658.
Hao, Feng, Stoumpos, Constantinos C., Guo, Peijun, Zhou, Nanjia, Marks, Tobin J., Chang, Robert P. H., & Kanatzidis, Mercouri G. Solvent-Mediated Crystallization of CH3NH3SnI3 Films for Heterojunction Depleted Perovskite Solar Cells. United States. https://doi.org/10.1021/jacs.5b06658
Hao, Feng, Stoumpos, Constantinos C., Guo, Peijun, Zhou, Nanjia, Marks, Tobin J., Chang, Robert P. H., and Kanatzidis, Mercouri G. Thu .
"Solvent-Mediated Crystallization of CH3NH3SnI3 Films for Heterojunction Depleted Perovskite Solar Cells". United States. https://doi.org/10.1021/jacs.5b06658. https://www.osti.gov/servlets/purl/1386526.
@article{osti_1386526,
title = {Solvent-Mediated Crystallization of CH3NH3SnI3 Films for Heterojunction Depleted Perovskite Solar Cells},
author = {Hao, Feng and Stoumpos, Constantinos C. and Guo, Peijun and Zhou, Nanjia and Marks, Tobin J. and Chang, Robert P. H. and Kanatzidis, Mercouri G.},
abstractNote = {Organo-lead halide perovskite solar cells have gained enormous significance and have now achieved power conversion efficiencies of ~20%. However, the potential toxicity of lead in these systems raises environmental concerns for widespread deployment. In this work we investigate solvent effects on the crystallization of the lead-free methylammonium tin triiodide (CH3NH3SnI3) perovskite films in a solution growth process. Highly uniform, pinhole-free perovskite films are obtained from a dimethyl sulfoxide (DMSO) solution via a transitional SnI2·3DMSO intermediate phase. This high-quality perovskite film enables the realization of heterojunction depleted solar cells based on mesoporous TiO2 layer but in the absence of any hole-transporting material with an unprecedented photocurrent up to 21 mA cm–2. Charge extraction and transient photovoltage decay measurements reveal high carrier densities in the CH3NH3SnI3 perovskite device which are one order of magnitude larger than CH3NH3PbI3-based devices but with comparable recombination lifetimes in both devices. The relatively high background dark carrier density of the Sn-based perovskite is responsible for the lower photovoltaic efficiency in comparison to the Pb-based analogues. These results provide important progress toward achieving improved perovskite morphology control in realizing solution-processed highly efficient lead-free perovskite solar cells.},
doi = {10.1021/jacs.5b06658},
journal = {Journal of the American Chemical Society},
number = 35,
volume = 137,
place = {United States},
year = {Thu Aug 27 00:00:00 EDT 2015},
month = {Thu Aug 27 00:00:00 EDT 2015}
}
Web of Science
Figures / Tables:
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Potential Substitutes for Replacement of Lead in Perovskite Solar Cells: A Review
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