Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1039/d1cp04977a http://hdl.handle.net/11449/223514 |
Resumo: | Halide perovskites are a well-known class of materials with many interesting applications. Great attention has been devoted to investigating halide perovskites containing triple methylammonium (MA+), formamidinium (FA+), and guanidinium (GA+) cations. Despite presenting very good applied perspectives so far, the lack of fundamental information for this system, such as its structural, thermal, and optoelectronic characteristics, prompts a step back before any technological leap forward. In the present work, we investigate the physical properties of mechanochemically solvent-free synthesized GAxFAxMA1-2xPbI3 halide perovskite powders with compositions of 0.00 ≤ x ≤ 0.15. We demonstrate that the synthesis of the powders can be performed by a simple manual mechanical grinding of the precursors for about 40 minutes, leading to solid solutions with an only minor content of unreacted precursors. X-ray diffraction, differential scanning calorimetry, and infrared spectroscopy techniques were used to investigate the structure, tetragonal-to-cubic phase transition, and vibrational characteristics of the organic cations with increasing GA+ and FA+ contents, respectively. The band gap and Urbach energies, obtained from ultraviolet-visible spectroscopy analyses, ranged from 1.58 to 1.65 eV and 23 to 36 meV, respectively, depending on the composition. These parameters demonstrate a non-random variation with x composition, which offers the possibility of a rational composition design for a given set of desired properties, demonstrating potential for optoelectronic applications. Finally, the system appears to have adequately tolerated heating for 12 hours at 120 °C in an ambient atmosphere, indicating high thermal stability and low ionic conductivity, which are desirable characteristics for solar cell applications. This journal is |
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Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesisHalide perovskites are a well-known class of materials with many interesting applications. Great attention has been devoted to investigating halide perovskites containing triple methylammonium (MA+), formamidinium (FA+), and guanidinium (GA+) cations. Despite presenting very good applied perspectives so far, the lack of fundamental information for this system, such as its structural, thermal, and optoelectronic characteristics, prompts a step back before any technological leap forward. In the present work, we investigate the physical properties of mechanochemically solvent-free synthesized GAxFAxMA1-2xPbI3 halide perovskite powders with compositions of 0.00 ≤ x ≤ 0.15. We demonstrate that the synthesis of the powders can be performed by a simple manual mechanical grinding of the precursors for about 40 minutes, leading to solid solutions with an only minor content of unreacted precursors. X-ray diffraction, differential scanning calorimetry, and infrared spectroscopy techniques were used to investigate the structure, tetragonal-to-cubic phase transition, and vibrational characteristics of the organic cations with increasing GA+ and FA+ contents, respectively. The band gap and Urbach energies, obtained from ultraviolet-visible spectroscopy analyses, ranged from 1.58 to 1.65 eV and 23 to 36 meV, respectively, depending on the composition. These parameters demonstrate a non-random variation with x composition, which offers the possibility of a rational composition design for a given set of desired properties, demonstrating potential for optoelectronic applications. Finally, the system appears to have adequately tolerated heating for 12 hours at 120 °C in an ambient atmosphere, indicating high thermal stability and low ionic conductivity, which are desirable characteristics for solar cell applications. This journal isDepartment of Physics and Chemistry São Paulo State UniversityDepartment of Engineering University of Rio VerdeDepartment of Physics and Chemistry São Paulo State UniversityUniversidade Estadual Paulista (UNESP)University of Rio VerdeMinussi, F. B. [UNESP]A. Silva, L.Araújo, E. B. [UNESP]2022-04-28T19:51:13Z2022-04-28T19:51:13Z2022-02-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4715-4728http://dx.doi.org/10.1039/d1cp04977aPhysical Chemistry Chemical Physics, v. 24, n. 8, p. 4715-4728, 2022.1463-9076http://hdl.handle.net/11449/22351410.1039/d1cp04977a2-s2.0-85125212331Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Chemistry Chemical Physicsinfo:eu-repo/semantics/openAccess2022-04-28T19:51:13Zoai:repositorio.unesp.br:11449/223514Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:27:02.454739Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis |
title |
Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis |
spellingShingle |
Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis Minussi, F. B. [UNESP] |
title_short |
Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis |
title_full |
Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis |
title_fullStr |
Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis |
title_full_unstemmed |
Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis |
title_sort |
Structure, optoelectronic properties and thermal stability of the triple organic cation GAx FAx MA1-2 x PbI3system prepared by mechanochemical synthesis |
author |
Minussi, F. B. [UNESP] |
author_facet |
Minussi, F. B. [UNESP] A. Silva, L. Araújo, E. B. [UNESP] |
author_role |
author |
author2 |
A. Silva, L. Araújo, E. B. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) University of Rio Verde |
dc.contributor.author.fl_str_mv |
Minussi, F. B. [UNESP] A. Silva, L. Araújo, E. B. [UNESP] |
description |
Halide perovskites are a well-known class of materials with many interesting applications. Great attention has been devoted to investigating halide perovskites containing triple methylammonium (MA+), formamidinium (FA+), and guanidinium (GA+) cations. Despite presenting very good applied perspectives so far, the lack of fundamental information for this system, such as its structural, thermal, and optoelectronic characteristics, prompts a step back before any technological leap forward. In the present work, we investigate the physical properties of mechanochemically solvent-free synthesized GAxFAxMA1-2xPbI3 halide perovskite powders with compositions of 0.00 ≤ x ≤ 0.15. We demonstrate that the synthesis of the powders can be performed by a simple manual mechanical grinding of the precursors for about 40 minutes, leading to solid solutions with an only minor content of unreacted precursors. X-ray diffraction, differential scanning calorimetry, and infrared spectroscopy techniques were used to investigate the structure, tetragonal-to-cubic phase transition, and vibrational characteristics of the organic cations with increasing GA+ and FA+ contents, respectively. The band gap and Urbach energies, obtained from ultraviolet-visible spectroscopy analyses, ranged from 1.58 to 1.65 eV and 23 to 36 meV, respectively, depending on the composition. These parameters demonstrate a non-random variation with x composition, which offers the possibility of a rational composition design for a given set of desired properties, demonstrating potential for optoelectronic applications. Finally, the system appears to have adequately tolerated heating for 12 hours at 120 °C in an ambient atmosphere, indicating high thermal stability and low ionic conductivity, which are desirable characteristics for solar cell applications. This journal is |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-28T19:51:13Z 2022-04-28T19:51:13Z 2022-02-28 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1039/d1cp04977a Physical Chemistry Chemical Physics, v. 24, n. 8, p. 4715-4728, 2022. 1463-9076 http://hdl.handle.net/11449/223514 10.1039/d1cp04977a 2-s2.0-85125212331 |
url |
http://dx.doi.org/10.1039/d1cp04977a http://hdl.handle.net/11449/223514 |
identifier_str_mv |
Physical Chemistry Chemical Physics, v. 24, n. 8, p. 4715-4728, 2022. 1463-9076 10.1039/d1cp04977a 2-s2.0-85125212331 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Chemistry Chemical Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
4715-4728 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129070700953600 |