Impact of concentration and excitation wavelength on fluorescence behaviour of CuInS2 QDs

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-03-03 DOI:10.1016/j.solidstatesciences.2025.107886

Priya Chandra, K.S. Ojha

引用次数: 0

Abstract

Copper indium sulfide (CuInS₂) ternary quantum dots (QDs) offer tunable optical properties for displays, efficient solar cells, and advanced biomedical imaging. In this work, CuInS₂ QDs are prepared via a one-pot solvothermal route. The XRD has been performed for structural information, revealing the chalcopyrite structure of CuInS₂ with an average crystalline size of 8 nm, consistent with particle size calculated by the HRTEM image. The functional group analysis confirms the formation of CuInS₂ QDs. A blue shift in the energy gap of the prepared QDs has been found compared to the bulk. A narrow emission peak lying at 610 nm has been observed, showing Stoke's shift of 130 nm. The fluorescence behaviour of synthesized QDs with excitation wavelength and concentration has been investigated.

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浓度和激发波长对 CuInS2 QD 荧光行为的影响

硫化铜铟（CuInS2）三元量子点（QDs）为显示器、高效太阳能电池和先进的生物医学成像提供了可调谐的光学特性。在这项工作中，通过一锅溶剂热途径制备了CuInS2量子点。通过XRD进行结构信息分析，发现CuInS2为黄铜矿结构，平均晶粒尺寸为8 nm，与HRTEM图像计算的粒径一致。官能团分析证实了CuInS2量子点的形成。在制备的量子点的能隙中发现了与体相比的蓝移。在610 nm处观察到一个狭窄的发射峰，显示出130 nm的斯托克位移。研究了合成量子点随激发波长和激发浓度的荧光行为。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.