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Science & Tech.
Pradeep Kumar

01/02/22 09:25 AM IST

Efficient and durable solar cells

In news

Indian Scientists have devised a new process for increasing the efficiency and stability of Titanium dioxide (TiO2) nanorods based on Perovskite Solar Cells (PSC).

Details
  • It will help develop solar cells with stable light-harvesting active layer.
  • Perovskite solar cells have become commercially attractive because of the potential of achieving even higher efficiencies and very low production costs.
  • Porosity of the electrode plays a vital role in perovskite infiltration and sensitization.
  • The inter-pore distance between the two TiO2 nanorods determines the photo-electrode's porosity, and the porosity varies as the growth of the nanorod length increases.
  • The team controlled nanostructures of the TiO2-NR by varying the concentration of the titania precursor and the growth time.
  • The power conversion efficiency for nanorod-based PSCs was enhanced with variation in the length and porosity of the TiO2-NR.
  • The interspacing between the TiO2-NR facilitated deep infiltration of the perovskite during the spin coating and is locally confined to the surface of the TiO2-NR.
  • Due to the large pores present in the TiO2-NR photoelectrode, infiltration of small molecular HTM was also enhanced. 
Source: PIB

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