An easily available Galinsoga Parviflora (GP) natural dye has been used as natural sensitizers for dye sensitized solar cell (DSSC). Graphene oxide (GO) is one of the most efficient materials for solar cells, supercapacitor and sensing applications because of its unique properties. It is prepared from natural graphite flakes by modified Hummer’s method. Graphene oxide/nickel oxide (GO/NiO) nanocomposites are prepared by chemical precipitation method. The different concentrations of nickel oxide nanoparticles (5:1, 5:2 and 5:3) are embellished on the GO surface. The synthesis of these nanocomposites are confirmed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM) and high resolution transmission electron microscopy (HR-TEM). The XRD results confirmed that the nickel oxide nanoparticles are coated on the graphene oxide surface and the crystallite size of GO/NiO (5:1, 5:2 and 5:3) nanocomposites are found to be around 19 nm, 21.3 nm and 23 nm respectively. The electrochemical activity of the prepared nanocomposites is investigated by cyclic voltammetry (CV) technique. The power conversion efficiency is measured using a light source simulated with an intensity of 100 mW/cm². The conversion efficiency of prepared sandwich type dye sensitized solar cell (5:1, 5:2 and 5:3) is 0.9%, 1.3% and 1.65% respectively.

一种容易获得的Galinsoga Parviflora（GP）天然染料已用作染料敏化太阳能电池（DSSC）的天然敏化剂。氧化石墨烯（GO）由于其独特的性能而成为太阳能电池，超级电容器和传感应用中最有效的材料之一。它是由天然石墨薄片通过改良的Hummer方法制备的。采用化学沉淀法制备了氧化石墨烯/氧化镍（GO / NiO）纳米复合材料。GO表面上装饰了不同浓度的氧化镍纳米粒子（5：1、5：2和5：3）。这些纳米复合材料的合成通过X射线衍射（XRD），傅立叶变换红外光谱（FT-IR），能量色散X射线光谱（EDX），拉曼光谱，场发射扫描电子显微镜（FE-SEM）和高分辨率透射电子显微镜（HR-TEM）。XRD结果证实，氧化镍纳米粒子被包覆在氧化石墨烯表面，GO / NiO（5：1、5：2和5：3）纳米复合材料的微晶尺寸约为19 nm，21.3 nm和23 nm分别。通过循环伏安法（CV）研究了制备的纳米复合材料的电化学活性。使用模拟的强度为100 mW / cm的光源测量功率转换效率 通过循环伏安法（CV）研究了制备的纳米复合材料的电化学活性。使用模拟的强度为100 mW / cm的光源测量功率转换效率 通过循环伏安法（CV）研究了制备的纳米复合材料的电化学活性。使用模拟的强度为100 mW / cm的光源测量功率转换效率²。所制备的夹心型染料敏化太阳能电池（5∶1、5∶2和5∶3）的转换效率分别为0.9％，1.3％和1.65％。