Complex Refractive Index Spectrum of CsPbBr3 Nanocrystals via the Effective Medium Approximation.

IF 4.3 3区 材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Nanomaterials Pub Date : 2025-01-24 DOI:10.3390/nano15030181
Sang-Hyuk Park, Jungwon Kim, Min Ju Kim, Min Woo Kim, Robert A Taylor, Kwangseuk Kyhm
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Abstract

We have estimated the intrinsic complex refractive index spectrum of a CsPbBr3 nanocrystal. With various dilute solutions of CsPbBr3 nanocrystals dissolved in toluene, effective refractive indices were measured at two different wavelengths using Michelson interferometry. Given the effective absorption spectrum of the solution, a full spectrum of the effective refractive index was also obtained through the Kramers-Krönig relations. Based on the Maxwell-Garnett model in the effective medium approximation, the real and imaginary spectrum of the complex refractive index was estimated for the CsPbBr3 nanocrystal, and the dominant inaccuracy was attributed to the size inhomogeneity.

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基于有效介质近似的CsPbBr3纳米晶体复折射率谱。
我们估计了CsPbBr3纳米晶体的内在复折射率谱。用不同稀释浓度的CsPbBr3纳米晶体溶液溶解在甲苯中,利用迈克尔逊干涉测量了两种不同波长下的有效折射率。给出溶液的有效吸收光谱,通过Kramers-Krönig关系式也可以得到有效折射率的全谱。基于有效介质近似下的Maxwell-Garnett模型,对CsPbBr3纳米晶体的复折射率实谱和虚谱进行了估计,主要误差是由于尺寸的不均匀性造成的。
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来源期刊
Nanomaterials
Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
8.50
自引率
9.40%
发文量
3841
审稿时长
14.22 days
期刊介绍: Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.
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