Non-blinking single-photon emitters in silica

Scientific Reports
Freddy T RabouwCelso de Mello Donega

Abstract

Samples for single-emitter spectroscopy are usually prepared by spin-coating a dilute solution of emitters on a microscope cover slip of silicate based glass (such as quartz). Here, we show that both borosilicate glass and quartz contain intrinsic defect colour centres that fluoresce when excited at 532 nm. In a microscope image the defect emission is indistinguishable from spin-coated emitters. The emission spectrum is characterised by multiple peaks with the main peak between 2.05 and 2.20 eV, most likely due to coupling to a silica vibration with an energy that varies between 160 and 180 meV. The defects are single-photon emitters, do not blink, and have photoluminescence lifetimes of a few nanoseconds. Photoluminescence from such defects may previously have been misinterpreted as originating from single nanocrystal quantum dots.

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Citations

Sep 2, 2016·Topics in Current Chemistry·Serena SilviAlberto Credi
Apr 24, 2018·Nanoscale·Zai-Quan XuIgor Aharonovich
Mar 2, 2019·Communications Biology·Lin WangMarisa L Martin-Fernandez
May 31, 2018·Scientific Reports·Cong Tai TrinhKwang-Geol Lee
Dec 17, 2016·Nanotechnology·Ilya SychugovJan Linnros
Apr 16, 2019·Nano Letters·Andre NeumannAlexander Högele
Dec 11, 2021·Science Advances·Alexander SenichevVladimir M Shalaev
Mar 2, 2019··Christophe CouteauJean-Philippe Girard

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