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Halogen-free guanidinium-based perovskite solar cell with enhanced stability

Herein, we report a new halogen-free and excellent stable perovskite, GAPb(SCN)(3), which was prepared from the symmetric guanidinium cation (GA(+)) with nearly zero dipole moment, and pseudohalogen (SCN(−)), for the fabrication of stable perovskite solar cells. GAPb(SCN)(3) exhibits an orthorhombic...

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Autores principales: Chandra Deb Nath, Narayan, Yoo, Kicheon, Lee, Jae-Joon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080437/
https://www.ncbi.nlm.nih.gov/pubmed/35539246
http://dx.doi.org/10.1039/c8ra00639c
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author Chandra Deb Nath, Narayan
Yoo, Kicheon
Lee, Jae-Joon
author_facet Chandra Deb Nath, Narayan
Yoo, Kicheon
Lee, Jae-Joon
author_sort Chandra Deb Nath, Narayan
collection PubMed
description Herein, we report a new halogen-free and excellent stable perovskite, GAPb(SCN)(3), which was prepared from the symmetric guanidinium cation (GA(+)) with nearly zero dipole moment, and pseudohalogen (SCN(−)), for the fabrication of stable perovskite solar cells. GAPb(SCN)(3) exhibits an orthorhombic crystal phase, with optical band gap of 1.43 eV. The orthorhombic crystal phase shifted to a cubic phase, due to the formation of PbS beyond 150 °C. GAPb(SCN)(3) itself showed excellent stability upon being exposed to ambient conditions for 30 days, without degradation of its optical or crystallographic properties. This superior stability could be attributable to the strong electrostatic interaction between SCN(−) and Pb(2+), and hydrogen bonding between SCN(−) and GA(+). Even though it has a suitable band gap, it exhibited a significantly lower efficiency of ca. 0.11%. The very low performance could be attributable to the significantly low light absorption coefficient, and large non-radiative recombination of photo-induced charges via an oxidized form of S at the TiO(2)/perovskite interface.
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spelling pubmed-90804372022-05-09 Halogen-free guanidinium-based perovskite solar cell with enhanced stability Chandra Deb Nath, Narayan Yoo, Kicheon Lee, Jae-Joon RSC Adv Chemistry Herein, we report a new halogen-free and excellent stable perovskite, GAPb(SCN)(3), which was prepared from the symmetric guanidinium cation (GA(+)) with nearly zero dipole moment, and pseudohalogen (SCN(−)), for the fabrication of stable perovskite solar cells. GAPb(SCN)(3) exhibits an orthorhombic crystal phase, with optical band gap of 1.43 eV. The orthorhombic crystal phase shifted to a cubic phase, due to the formation of PbS beyond 150 °C. GAPb(SCN)(3) itself showed excellent stability upon being exposed to ambient conditions for 30 days, without degradation of its optical or crystallographic properties. This superior stability could be attributable to the strong electrostatic interaction between SCN(−) and Pb(2+), and hydrogen bonding between SCN(−) and GA(+). Even though it has a suitable band gap, it exhibited a significantly lower efficiency of ca. 0.11%. The very low performance could be attributable to the significantly low light absorption coefficient, and large non-radiative recombination of photo-induced charges via an oxidized form of S at the TiO(2)/perovskite interface. The Royal Society of Chemistry 2018-05-14 /pmc/articles/PMC9080437/ /pubmed/35539246 http://dx.doi.org/10.1039/c8ra00639c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Chandra Deb Nath, Narayan
Yoo, Kicheon
Lee, Jae-Joon
Halogen-free guanidinium-based perovskite solar cell with enhanced stability
title Halogen-free guanidinium-based perovskite solar cell with enhanced stability
title_full Halogen-free guanidinium-based perovskite solar cell with enhanced stability
title_fullStr Halogen-free guanidinium-based perovskite solar cell with enhanced stability
title_full_unstemmed Halogen-free guanidinium-based perovskite solar cell with enhanced stability
title_short Halogen-free guanidinium-based perovskite solar cell with enhanced stability
title_sort halogen-free guanidinium-based perovskite solar cell with enhanced stability
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080437/
https://www.ncbi.nlm.nih.gov/pubmed/35539246
http://dx.doi.org/10.1039/c8ra00639c
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AT yookicheon halogenfreeguanidiniumbasedperovskitesolarcellwithenhancedstability
AT leejaejoon halogenfreeguanidiniumbasedperovskitesolarcellwithenhancedstability