Oxygen-less Carbon Nanodots with an Absolute Quantum Yield of 80% for Display Applications,ACS Applied Nano Materials

当前位置： X-MOL 学术 › ACS Appl. Nano Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Oxygen-less Carbon Nanodots with an Absolute Quantum Yield of 80% for Display Applications
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-02-24 , DOI: 10.1021/acsanm.0c03011
Taehyung Lee ₁ , Sungyeon Won ₂ , Yoonsang Park _{1,

3} , Woosung Kwon _{1,

2}

Affiliation

Carbon nanodots (CNDs) are organic-based particulate fluorophores prepared using various carbon-containing sources such as bulk carbon materials (e.g., graphite and coal) and organic molecules (e.g., carbohydrates, organic acids, and amino acids). Despite the wide variety of sources, the formation of CNDs almost always requires a specific type of oxidation reaction, and CNDs are generally regarded as highly oxidized carbon materials, similar to graphitic oxide. The oxide structures of CNDs are known to not only play a crucial role in the realization of photoluminescence but also induce oxygen-related defects that may degrade the optoelectronic properties. Therefore, we report an oxygen-free synthesis of CNDs with extremely low oxygen contents based on the pyrolysis-induced decarboxylation of aromatic carboxylic acids. The CNDs exhibit very strong excitation-independent photoluminescence in the yellow to orange range of the visible spectrum, with an absolute quantum yield that ranges up to 80%. Finally, we successfully fabricated freestanding color filters using these CNDs to demonstrate their potential in future display applications.

中文翻译：

用于显示应用的绝对量子产率为80％的无氧碳纳米点

碳纳米点（CND）是使用各种含碳源（例如，大块碳材料（例如，石墨和煤）和有机分子（例如，碳水化合物，有机酸和氨基酸））制成的有机基颗粒荧光团。尽管有各种各样的来源，但是CND的形成几乎总是需要特定类型的氧化反应，并且CND通常被认为是高度氧化的碳材料，类似于氧化石墨。已知CND的氧化物结构不仅在实现光致发光中起关键作用，而且还会诱发与氧有关的缺陷，这些缺陷可能会降低光电性能。因此，我们报告了基于热解诱导的芳族羧酸脱羧，无氧合成具有极低氧含量的CND。CND在可见光谱的黄色到橙色范围内表现出非常强的与激发无关的光致发光，其绝对量子产率高达80％。最后，我们使用这些CND成功地制造了独立式彩色滤光片，以展示其在未来显示应用中的潜力。

更新日期：2021-03-26

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11