Single- or double A-site cations in A3Bi2I9 bismuth perovskites: What is the suitable choice?

Investigations on the effect of single or double A-site cation engineering on the photovoltaic performance of bismuth perovskite-inspired materials (A 3 Bi 2 I 9 ) are rare. Herein, we report novel single- and double-cation based bismuth perovskite-inspired materials developed by (1) completely repl...

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Vydané v:Journal of materials research Ročník 36; číslo 9; s. 1794 - 1804
Hlavní autori: Ünlü, Feray, Kulkarni, Ashish, Lê, Khan, Bohr, Christoph, Bliesener, Andrea, Öz, Seren Dilara, Jena, Ajay Kumar, Ando, Yoichi, Miyasaka, Tsutomu, Kirchartz, Thomas, Mathur, Sanjay
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Cham Springer International Publishing 14.05.2021
Springer Nature B.V
Predmet:
Applied and Technical Physics
Biomaterials
Bismuth
Cations
Cesium
Chemistry and Materials Science
Crystal structure
Efficiency
Energy conversion efficiency
Energy gap
Engineering
Inorganic Chemistry
Invited Paper
Lithium
Materials Engineering
Materials research
Materials Science
Morphology
Nanotechnology
Perovskites
Reduction
Rubidium
Sodium
Thin films
Toxicity
Energy generation
Photovoltaic
Perovskites
Chemical composition
Sustainability
Bi
ISSN:0884-2914, 2044-5326
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Shrnutí:Investigations on the effect of single or double A-site cation engineering on the photovoltaic performance of bismuth perovskite-inspired materials (A 3 Bi 2 I 9 ) are rare. Herein, we report novel single- and double-cation based bismuth perovskite-inspired materials developed by (1) completely replacing CH 3 NH 3 + (methylammonium, MA + ) in MA 3 Bi 2 I 9 with various organic cations such as CH(NH 2 ) 2 + (formamidinium, FA + ), (CH 3 ) 2 NH 2 + (dimethylammonium, DMA + ), C(NH 2 ) 3 + (guanidinium, GA + ) and inorganic cations such as cesium (Cs + ), rubidium (Rb + ), potassium (K + ), sodium (Na + ) and lithium (Li + ) and (2) partially replacing MA + with Cs + in different stoichiometric ratios. Compared to single-cation based bismuth perovskite devices, the double-cation bismuth perovskite device showed an increment in the device power conversion efficiency (PCE) up to 1.5% crediting to the reduction in the bandgap. This is the first study demonstrating double-cation based bismuth perovskite showing bandgap reduction and increment in device efficiency and opens up the possibilities towards compositional engineering for improved device performance. Graphic Abstract
Bibliografia:ObjectType-Article-1
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ISSN:0884-2914
2044-5326
DOI:10.1557/s43578-021-00155-z