Perovskite laser maintains stable performance over 400 million pulses
In a study published in Advanced Optical Materials, researchers at Vilnius University (VU) demonstrated perovskite-based laser structures that maintained stable performance over more than 400 million pulses. Their findings address one of the major challenges limiting the practical use of perovskites: their instability. These semiconductor materials could play an important role in next-generation…
Researchers at Vilnius University have shown that perovskite-based laser structures can maintain stable performance over more than 400 million pulses. This breakthrough addresses the major challenge of instability that has limited the practical use of perovskites, a type of semiconductor material with great potential for next-generation optical technologies.
Perovskites are prone to degradation, particularly in the presence of moisture, which has long hindered researchers worldwide. However, the VU team managed to overcome this hurdle by replacing part of the lead in the perovskite structure with zinc, reducing the material's sensitivity to environmental factors. To test the stability of their perovskite samples, the researchers used high-resolution confocal microscopy and interference laser ablation techniques.
These methods allowed them to observe how the perovskites emitted radiation and how various storage conditions affected their performance. The results showed that the modified perovskite samples displayed the desired properties, including a narrow emission line and good stability. The researchers are now focusing on further refining these materials and bringing them closer to practical applications in engineering and modern technology.
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