Cheong I Teng, Morrish William, Sheard William, Yu Haoyang, Tavares Luppi Bruno, Milburn Leanne, Meldrum Alkiviathes, Veinot Jonathan G C
Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada.
ACS Appl Mater Interfaces. 2021 Jun 16;13(23):27149-27158. doi: 10.1021/acsami.1c01825. Epub 2021 May 13.
Luminescent silicon nanoparticles have been widely recognized as an alternative for metal-based quantum dots (QDs) for optoelectronics partly because of the high abundance and biocompatibility of silicon. To date, the broad photoluminescence line width (often >100 nm) of silicon QDs has been a hurdle to achieving competitive spectral purity and incorporating them into light-emitting devices. Herein we report fabrication and testing of straightforward configuration of Fabry-Pérot resonators that incorporates a thin layer of SiQD-polymer hybrid/blend between two reflective silver mirrors; remarkably these devices exhibit up-to-14-fold narrowing of SiQD emission and achieve a spectral bandwidth as narrow as ca. 9 nm. Our polymer-based, SiQD-containing Fabry-Pérot resonators also provide convenient spectral tunability, can be prepared using a variety of polymer hosts and substrates, and enable rigid as well as flexible devices.
发光硅纳米颗粒已被广泛认为是用于光电子学的金属基量子点（QDs）的替代品，部分原因是硅的高丰度和生物相容性。迄今为止，硅量子点的宽光致发光线宽（通常>100nm）一直是实现具有竞争力的光谱纯度并将其纳入发光器件的障碍。在此，我们报告了法布里-珀罗谐振器的直接配置的制造和测试，该谐振器在两个反射银镜之间包含一层薄的SiQD-聚合物杂化/共混物；值得注意的是，这些器件的SiQD发射线宽缩小了高达14倍，并实现了窄至约9nm的光谱带宽。我们基于聚合物的含SiQD的法布里-珀罗谐振器还提供了方便的光谱可调性，可以使用多种聚合物主体和基板制备，并能够制造刚性和柔性器件。
