What is it about?

In this work we show the generation of individual photons in the near infrared range from a hybrid organic-inorganic perovskite when its organic component is greater than its organic one. The material is composed by nanometric perovskite structures inside an amorphous organic environment. This structures confine electrons in volumes so small that when excited with a laser, they can decay emitting one single photon at a time.

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Why is it important?

Single photons, the light quanta, are a milestone of future quantum technologies. The state-of-the-art techniques to fabricate systems capable to generate such kind of light are based on expensive physical processes, and this might be an obstacle for the industrial development of these systems. The reduction of the costs and complexity of the single photon sources fabrication techniques has then huge importance for the future of quantum technologies. This work shows a material that can generate quantum light with simple and economic fabrication techniques.


The versatility of the material we developed makes it interesting for integrated opto-electronic devices. Our intention is to interface these structures with other optical materials and heterostructures, to develop new devices, capable to exploit the light at its quantum level.

Daniel Gustavo Suarez Forero
Consiglio Nazionale delle Ricerche

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This page is a summary of: Quantum Nature of Light in Nonstoichiometric Bulk Perovskites, ACS Nano, August 2019, American Chemical Society (ACS), DOI: 10.1021/acsnano.9b05361.
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