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Ultralow Threshold Lasing from Carbon Dot-Ormosil Gel Hybrid-Based Planar Microcavity.

ABSTRACT: 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-1 at peak wavelength. Ultralow threshold (~70 W/cm2) lasing can also be demonstrated from a planar microcavity by using CD-ormosil gel hybrids as a gain medium.

SUBMITTER: Ni Y

PROVIDER: S-EPMC8307971 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

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Ultralow Threshold Lasing from Carbon Dot-Ormosil Gel Hybrid-Based Planar Microcavity.

Ni Yiqun Y Han Zhixia Z Ren Junkai J Wang Zhen Z Zhang Wenfei W Xie Zheng Z Shao Yonghong Y Zhou Shuyun S

Nanomaterials (Basel, Switzerland) 20210706 7

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 th ...[more]

PMID: 34361149

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