The absence of an ideal solid matrix with resistance to harsh conditions for carbon dots (CDs) and high transmittance in the visible/near infrared region is the bottleneck in CD applications. In this study, we show that a stable rigid structure can be formed between CDs and organically modified silicates (ormosil) gel when CDs are incorporated into ormosil gel hybrids as a solid matrix. A high photoluminescence quantum yield (PLQY) of 63% is achieved at a 583 nm emission. Peak optical gain of the hybrids was found to be 67 cm at peak wavelength. Ultralow threshold (~70 W/cm) lasing can also be demonstrated from a planar microcavity by using CD-ormosil gel hybrids as a gain medium.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307971 | PMC |
| http://dx.doi.org/10.3390/nano11071762 | DOI Listing |
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