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Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI(3)

Perovskite solar cells have revolutionized the fabrication of solution-processable solar cells. The presence of lead in the devices makes this technology less attractive, and alternative metals in perovskites are being researched as suitable alternatives. We demonstrate a new type of tin-based perov...

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Autores principales: Ke, Weijun, Stoumpos, Constantinos C., Zhu, Menghua, Mao, Lingling, Spanopoulos, Ioannis, Liu, Jian, Kontsevoi, Oleg Y., Chen, Michelle, Sarma, Debajit, Zhang, Yongbo, Wasielewski, Michael R., Kanatzidis, Mercouri G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5576879/
https://www.ncbi.nlm.nih.gov/pubmed/28875173
http://dx.doi.org/10.1126/sciadv.1701293
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author Ke, Weijun
Stoumpos, Constantinos C.
Zhu, Menghua
Mao, Lingling
Spanopoulos, Ioannis
Liu, Jian
Kontsevoi, Oleg Y.
Chen, Michelle
Sarma, Debajit
Zhang, Yongbo
Wasielewski, Michael R.
Kanatzidis, Mercouri G.
author_facet Ke, Weijun
Stoumpos, Constantinos C.
Zhu, Menghua
Mao, Lingling
Spanopoulos, Ioannis
Liu, Jian
Kontsevoi, Oleg Y.
Chen, Michelle
Sarma, Debajit
Zhang, Yongbo
Wasielewski, Michael R.
Kanatzidis, Mercouri G.
author_sort Ke, Weijun
collection PubMed
description Perovskite solar cells have revolutionized the fabrication of solution-processable solar cells. The presence of lead in the devices makes this technology less attractive, and alternative metals in perovskites are being researched as suitable alternatives. We demonstrate a new type of tin-based perovskite absorber that incorporates both ethylenediammonium (en) and formamidinium (FA), forming new materials of the type {en}FASnI(3). The three-dimensional ASnI(3) structure is stable only with methylammonium, FA, and Cs cations, and the bandgap can be tuned with solid solutions, such as ASnI(3−x)Br(x). We show that en can serve as a new A cation capable of achieving marked increases in the bandgap without the need for solid solutions. The en introduces a new bandgap tuning mechanism that arises from massive Schottky style defects. In addition, incorporation of the en cation in the structure markedly increases the air stability and improves the photoelectric properties of the tin-based perovskite absorbers. Our best-performing {en}FASnI(3) solar cell has the highest efficiency of 7.14%, which is achieved for a lead-free perovskite cell, and retains 96% of its initial efficiency after aging over 1000 hours with encapsulation. Our results introduce a new approach for improving the performance and stability of tin-based, lead-free perovskite solar cells.
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spelling pubmed-55768792017-09-05 Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI(3) Ke, Weijun Stoumpos, Constantinos C. Zhu, Menghua Mao, Lingling Spanopoulos, Ioannis Liu, Jian Kontsevoi, Oleg Y. Chen, Michelle Sarma, Debajit Zhang, Yongbo Wasielewski, Michael R. Kanatzidis, Mercouri G. Sci Adv Research Articles Perovskite solar cells have revolutionized the fabrication of solution-processable solar cells. The presence of lead in the devices makes this technology less attractive, and alternative metals in perovskites are being researched as suitable alternatives. We demonstrate a new type of tin-based perovskite absorber that incorporates both ethylenediammonium (en) and formamidinium (FA), forming new materials of the type {en}FASnI(3). The three-dimensional ASnI(3) structure is stable only with methylammonium, FA, and Cs cations, and the bandgap can be tuned with solid solutions, such as ASnI(3−x)Br(x). We show that en can serve as a new A cation capable of achieving marked increases in the bandgap without the need for solid solutions. The en introduces a new bandgap tuning mechanism that arises from massive Schottky style defects. In addition, incorporation of the en cation in the structure markedly increases the air stability and improves the photoelectric properties of the tin-based perovskite absorbers. Our best-performing {en}FASnI(3) solar cell has the highest efficiency of 7.14%, which is achieved for a lead-free perovskite cell, and retains 96% of its initial efficiency after aging over 1000 hours with encapsulation. Our results introduce a new approach for improving the performance and stability of tin-based, lead-free perovskite solar cells. American Association for the Advancement of Science 2017-08-30 /pmc/articles/PMC5576879/ /pubmed/28875173 http://dx.doi.org/10.1126/sciadv.1701293 Text en Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Ke, Weijun
Stoumpos, Constantinos C.
Zhu, Menghua
Mao, Lingling
Spanopoulos, Ioannis
Liu, Jian
Kontsevoi, Oleg Y.
Chen, Michelle
Sarma, Debajit
Zhang, Yongbo
Wasielewski, Michael R.
Kanatzidis, Mercouri G.
Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI(3)
title Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI(3)
title_full Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI(3)
title_fullStr Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI(3)
title_full_unstemmed Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI(3)
title_short Enhanced photovoltaic performance and stability with a new type of hollow 3D perovskite {en}FASnI(3)
title_sort enhanced photovoltaic performance and stability with a new type of hollow 3d perovskite {en}fasni(3)
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5576879/
https://www.ncbi.nlm.nih.gov/pubmed/28875173
http://dx.doi.org/10.1126/sciadv.1701293
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