Highly luminescent Ag doped ZnO nanocrystals were synthesized in controlled manner by wet chemical route at room temperature and effects of Ag doping and three different ligands polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA) and biotin (BT) attached were investigated. The phase purity, crystallinity and crystallite sizes of as prepared nanoparticles (NPs) were characterized by X-ray diffraction (XRD) technique, which confirms high crystalline hexagonal wurtzite phase for all the samples and has no any toxicity issues. We reported here the egg shape of the Ag doped ZnO nanoparticles in biotin matrix having single domain crystallites as observed from high resolution transmission electron microscopy (HRTEM) images. The electron diffraction results obtained are consistent with the XRD results. The optical properties of the synthesized NPs were examined using UV–visible spectroscopy which shows exceptional band gap of 4.25 eV for the BT caped NPs and is believed to be tuned by Ag doping and quantum confinement in biotin matrix. Photoluminescence (PL) measurements demonstrated that the how Ag⁺ and different ligands attached can alter the excitonic and defect related emission in the Ag doped ZnO NPs. Room temperature Raman scattering were also reported from all the Ag doped ZnO NPs which shows new phonon scattering mode.

在室温下通过湿化学途径以受控方式合成了高发光的掺Ag的ZnO纳米晶体，并研究了掺Ag的效果，并研究了三种不同的配体聚乙烯吡咯烷酮（PVP），聚乙烯醇（PVA）和生物素（BT）的附着。通过X射线衍射（XRD）技术表征了所制备纳米颗粒（NPs）的相纯度，结晶度和微晶尺寸，这证实了所有样品的高结晶六方纤锌矿相，并且没有任何毒性问题。我们在这里报告了从高分辨率透射电子显微镜（HRTEM）图像观察到的具有单畴微晶的生物素基质中Ag掺杂的ZnO纳米颗粒的蛋形。获得的电子衍射结果与XRD结果一致。使用紫外-可见光谱法检查了合成NP的光学性质，该光谱显示出带帽的BT NP的异常带隙为4.25 eV，据信可以通过Ag掺杂和生物素基质中的量子限制来调节。光致发光（PL）测量表明⁺和附着的不同配体可以改变掺杂Ag的ZnO NPs中与激子和缺陷有关的发射。还报道了所有Ag掺杂的ZnO NP的室温拉曼散射，显示了新的声子散射模式。