“…Noble plasmonic metal nanostructures, such as gold (Au), silver (Ag) [18,19], aluminum (Al) [20], their alloys [16], and their core-shell formation [21][22][23][24][25], have been incorporated into DSSCs to effectively utilize the incident photon and improve cell performance. Many methods, both chemical and physical categories, including, wet chemical [26], polyol process [27], seed-mediated growth [28], photochemical [29], sonochemical [30], electrochemical [31], bioinspired [32], sputtering [33], and laser ablation [34], which have been, hitherto, reportedly employed to synthesize various plasmonic Ag nanostructures, possess one disadvantage or the other, such as toxic reducing agents, impurities, organic solvents, or may require special condition like high-temperature or low-pressure environment, and sometimes expensive and time-consuming procedures may be involved [35].…”