Journal
ADVANCED OPTICAL MATERIALS
Volume 10, Issue 11, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.202200237
Keywords
solution epitaxy; halide perovskites; microresonators; lasing
Categories
Funding
- Deutsche Forschungsgemeinschaft (DFG) [GRK2495/J, GRK2495/E, FOR 1878, GRK 1896]
- Federal Ministry of Education and Research of Germany (BMBF) [05K16WE1]
- Aufbruch Bayern initiative of the state of Bavaria
- Foundation for Polish Science through the International Research Agendas
- EU
- Ministry of Higher Education of the Arab Republic of Egypt
- Projekt DEAL
- [431791331 - SFB 1452]
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High-quality epitaxial growth of oriented microcrystallites has been achieved on a semiconductor substrate by drop casting precursor solutions. The microcrystallites exhibit green photoluminescence and lasing with low thresholds. The lasing is stable for over 10^9 excitation pulses, representing an important step towards continuous mode operation or even electrical excitation in future perovskite-based devices.
High-quality epitaxial growth of oriented microcrystallites on a semiconductor substrate is demonstrated here for formamidinium lead bromide perovskite, by drop casting of precursor solutions in air. The microcrystallites exhibit green photoluminescence at room temperature, as well as lasing with low thresholds. Lasing is observed even though the substrate is fully opaque at the lasing wavelengths, and even though it has a higher refractive index as the perovskite active material. Moreover, the lasing is stable for more than 10(9) excitation pulses, which is more than what is previously achieved for devices kept in the air. Such highly stable lasing under pulsed excitation represents an important step towards continuous mode operation or even electrical excitation in future perovskite-based devices.
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