Abstract Paper
Journal of
Functional Materials and Bio-molecules
| Title | : Enhanced thermal stability of formamidinium tin strontium iodide systems |
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| Author(s) | : Lucangelo Dimesso |
| Article Information | : Volume 1 - Issue 2 (November - 2017) , 76-86 |
| Affiliation(s) | : Technische Universität Darmstadt, Material and Geosciences Department Otto-Berndt-Strasse 3, D-64287 Darmstadt, Germany |
Abstract :
The properties of formamidinium-tin-strontium iodide systems as promising candidate for optoelectronic applications were investigated. Orthorhombic FASnI3 (space group Amm2) and SnI2 were detected as major crystalline phases. Static thermogravimetric analysis under nitrogen revealed a decrease of the weight loss rate at increasing the Sr-content. The optical spectra displayed a decrease of the absorption edges (1015nm, x = 0.0, 950-960nm, x = 0.1) and revealed a direct semiconducting behavior with band energy gaps of 1.31eV-1.34eV. The photoluminescence profiles (excitation wavelength λexc=380nm) showed large emission bands at 845nm, 920nm, 969nm) and for λexc = 500nm at 681nm, 1063nm and 1085nm respectively.
| Keywords | : hybrid perovskites, optoelectronic, formamidinium tin iodide. |
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| Document Type | : Research Paper |
| Publication date | : October 24, 2017 |