New interfacial layer using carbon nanotube and photosystem protein in perovskite solar cells: Efficiency enhancement

Utilizing bio-hybrid perovskite solar cells (PSC) showed excellent potential due to reaching high performance and being nature-friendly among other kinds of new-age solar cells. Furthermore, plants' photoreceptor organs, especially the photosystem protein complex (PS1) have attracted a lot of attention due to their useful properties such as the complementary absorption spectrum with most photosensors and its non-toxicity, which provides a strong potential for advancing new types of renewable energies. here, utilizing PS1 protein, optimized the absorption spectrum of the PSC in the blue and red wavelength areas (430 nm and 665 nm) which resulted in the PCS enhancement. The PCE of the PSC has been optimized from 17.65 % to 18.95 % by using photosystem protein and carbon nanotubes (CNTs) as an interface layer. alternatively, open circuit voltage (Voc) increased from 1.04 V to 1.08 V. Also, by using CNTs, the device's external quantum efficiency (EQE) represents an improvement.