Cargando…
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...
Autores principales: | , , |
---|---|
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 |
_version_ | 1784702786501345280 |
---|---|
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. |
format | Online Article Text |
id | pubmed-9080437 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT chandradebnathnarayan halogenfreeguanidiniumbasedperovskitesolarcellwithenhancedstability AT yookicheon halogenfreeguanidiniumbasedperovskitesolarcellwithenhancedstability AT leejaejoon halogenfreeguanidiniumbasedperovskitesolarcellwithenhancedstability |