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首页> 外文期刊>RSC Advances >Bismuth functionalized PVA film: field, plasmonic and pH effect on PVA originated broad photoluminescence
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Bismuth functionalized PVA film: field, plasmonic and pH effect on PVA originated broad photoluminescence

机译：铋官能化PVA薄膜：田地，等离子体和pH对PVA发起的宽光致发光的影响

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Bismuth (Bi) NPs have been synthesized by Laser Ablation Synthesis in Solution (LASiS) at different pH in different aqueous solutions [ viz. H _(2) O (H), H _(2) O + NaOH (HN), and H _(2) O + HCl (HC)]. The NPs in aqueous solution have been characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and UV-Vis-NIR techniques. The NPs are spherical, core shell type and hollow spheres in H, HN and HC, respectively. The vibrational features have been studied using Raman technique and correlated with different states of NPs (neutral NPs, ionized NPs, hollow NPs, core shell type NPs and NPs complex, etc. ). The NPs were later dispersed in polyvinyl alcohol (PVA). The electronic spectra of PVA molecules along with different types of Bi NPs films have been studied at different excitation wavelengths ( λ _(exci) = 240 nm, 270 nm, 300 nm and 360 nm). The sequences of optical sensitization in increasing order are NPs, core shell type NPs, and hollow spherical NPs. The enhanced emission is discussed in terms of plasmonic and field effects and is verified by lifetime measurements.
机译：在不同水溶液中的不同pH下的溶液（Lasis）中的激光烧蚀合成合成铋（Bi）NPS [Ziz。 H _（2）O（H），H _（2）O + NaOH（HN）和H _（2）O + HCl（HC）]。通过透射电子显微镜（TEM），扫描电子显微镜（SEM）和UV-Vis-Nir技术的特征在于水溶液中的NP。 NPS分别是H，HN和HC中的球形，核心壳类型和空心球。使用拉曼技术研究了振动特征，并与NPS的不同状态相关（中性NPS，电离NPS，空心NPS，核壳型NPS和NPS复合物等）。后来将NPS分散在聚乙烯醇（PVA）中。已经研究了PVA分子的电子光谱以及不同类型的Bi NPS膜，以不同的激发波长（λ_（exci）= 240nm，270nm，300nm和360nm）。增加顺序的光学敏化序列是NPS，核心壳型NPS和中空球形NPS。在等离子体和现场效应方面讨论了增强的排放，并通过寿命测量验证。

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