Algae derived carbon dots and its polymeric composites for white light emission

IF 3.3 3区物理与天体物理 Q2 OPTICS Journal of Luminescence Pub Date : 2024-10-22 DOI:10.1016/j.jlumin.2024.120955

B.U. Mendoza Enriquez , Miriam Rangel , Y. Kumar , S. Khandual , V. Agarwal

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Abstract

Nanomaterials with multicolor emission have been of great interest due to their versatility. Recently, environmentally friendly carbon dots (CDs) with excitation wavelength/solvent/dopant dependent emission have been used for designing different types of white light emitting diodes (W-LED). In this work, single-green precursor (Arthrospira platensis) derived CDs from a one-step hydro/solvothermal synthesis, have been implemented in the elaboration of W-LEDs. The white emission of CDs was modulated by the solvent engineering and doping strategies. A CDs/PVA composite based W-LED with a color render index (CRI) upper to ∼90 %, Commission Internationale Eclairage (CIE) coordinates of (0.31, 0.33) and correlated color temperature (CCT) of

\sim

6500 K is demonstrated. These findings suggest that white CDs derived from A. platensis possess promising potential in the field of optoelectronic devices, especially in the production of efficient and high-quality white illumination.

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用于发射白光的藻类衍生碳点及其聚合物复合材料

具有多色发射功能的纳米材料因其多功能性而备受关注。最近，与激发波长/溶剂/掺杂剂相关的环保型碳点（CD）已被用于设计不同类型的白光发光二极管（W-LED）。在这项工作中，通过一步水溶热合成法获得的单绿色前驱体（Arthrospira platensis）CD 被应用于 W-LED 的制备。CD 的白光发射受溶剂工程和掺杂策略的调节。基于 CD/PVA 复合材料的 W-LED 显色指数 (CRI) 高达 ∼ 90 %，国际照明委员会 (CIE) 坐标为 (0.31, 0.33)，相关色温 (CCT) ∼ 6500 K。这些研究结果表明，从 A. platensis 中提取的白光光盘在光电设备领域，尤其是在生产高效优质的白色照明产品方面具有广阔的发展前景。

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.