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Biosynthesized Zn-doped C. roseus has been successfully prepared by using a simple photo induced method. The green Zn-doped C. roseus nanoparticles showed moderate anti-diabetic activity.

In this study, we designed perylene-based organic dye for D-π-A architecture. First, screening the well electron-rich and electron-deficient donor and π-spacer group for efficient dye sensitizer for DSSCs have been simulated using DFT and TD-DFT methods. The theoretical results have shown that the LUMO and HOMO energy levels of the design dyes can ensure a positive effect on the process of electron injection and dye regeneration. The main factors of short-circuit current density influence the light harvesting efficiency and the electron injection rate. On the other hand, electron dipole moment is controlled by the open circuit photovoltage, which improves higher-efficiency photovoltaic devices. The calculated results of the design dye reveal that dye D3 can be used as a potential sensitizer for DSSCs.

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