Renewable energy is the main key to production, long-term environmental sustainability, and safe and inexhaustible energy source. One of the interesting devices of renewable energy that has received considerable attention as an alternative technology is dye-sensitized solar cells (DSSCs), which is considered the third generation of solar cells. These solar cells can convert solar radiation into electric current by using natural pigments as sensitizers by using natural pigments in the regulation of solar energy, which is similar to the photosynthesis process of the plant. Thus, this study results recommend that the fresh longan extraction method (original) has the highest pigment extraction yields of chlorophyll-a, chlorophyll-b, and carotenoids that were 88.055 ± 0.424 μg/ml, 26.178 ± 0.343 μg/ml, and 16.307 ± 0.564 μg/ml, respectively, and suitable for preparation as a photosensitizer for the DSSC production. Dye addition to semiconductor improves the basicity of titanium dioxide (TiO₂)_, leading to enhanced dye adsorption and UV–vis spectroscopy measurements confirmed. Dye absorption range is 400–700 nm visible on a solar spectrum and significant adsorption onto the semiconductor surface. The scanning electron microscope (SEM) and X-ray spectroscopy (EDX) analysis described that the extract encourages the formation of large crystals of the dye into the layers of TiO₂. Therefore, the use of these extracts would increase efficiency and reduce production costs for the manufacture of DSSC.

可再生能源是生产，长期环境可持续性以及安全和取之不尽的能源的主要关键。染料敏化太阳能电池（DSSC）作为替代技术已引起了广泛关注，这是令人关注的可再生能源设备之一，它被认为是第三代太阳能电池。这些太阳能电池可以通过使用天然色素作为敏化剂，通过在太阳能的调节中使用天然色素将太阳能转换为电流，这类似于植物的光合作用过程。因此，本研究结果建议新鲜龙眼提取方法（原始）具有最高的叶绿素a，叶绿素b和类胡萝卜素色素提取率，分别为88.055±0.424μg/ ml，26.178±0.343μg/ ml和16.307。分别为±0.564μg/ ml 并适合用作DSSC生产中的光敏剂。向半导体中添加染料可改善二氧化钛（TiO₂）_，导致增强的染料吸附和UV-vis光谱测量结果得到确认。在太阳光谱上可见染料的吸收范围为400–700 nm，并且在半导体表面上的吸附明显。扫描电子显微镜（SEM）和X射线光谱（EDX）分析表明，提取物促进了TiO ₂层中染料大晶体的形成。因此，使用这些提取物将提高生产DSSC的效率并降低生产成本。