Progress and Prospect on Stability of Perovskite Photovoltaics

Abstract

A B S T R A C TSolar energy has the potential to solve world energy problem as it is pollution-free. It could be enhanced using perovskite material as absorber in perovskite solar cells. The history and what this material is made up of are emphasized. Different methods of fabrication, improving the power conversion efficiency (PCE) and factors influencing degradation of perovskite based solar are stated. Because of the fact that this material based solar cells are not yet developed, its stability was reviewed to bring different technology employed in tackling the stability aiming for a better understanding of the material and the devices, and facilitates the commercialization of perovskite solar cell.

Effect of Concentration Variation on Optical and Structural Properties of TiO2 Thin Films

“…TiO2 as N-type semiconducting material has wide band gap with indirect energy band gap of 3.2 eV (anatase) and 3.02 eV (rutile) [6]. Several methods employed in preparation of TiO2 films include electron-beam evaporation [7,8], sputtering [9], sol-gel and dip coating, chemical vapour deposition [10] and spin-coating process [11][12][13]. Among the methods used, spin-coating offers advantages of low temperature processing, low cost, ease of coating large area and suitable for porous film preparation.…”

A Comprehensive Review of Photovoltaic Devices Based on Perovskites

“…Various processing techniques have been documented to fabricate hybrid Perovskite films. The major methods of fabricating Perovskite solar cells as suggested by Ezike et al (2017) are Spincoating, Vapour deposition and thermal evaporation methods. Spin-coating methods include onestep, twostep/ sequential deposition and vapour deposition method which include vapour -assisted deposition, and dualsource vapour deposition, and thermal evaporation technique (dual source approach) have been used to prepare CH3NH3PbX3 materials (Ezike et al, 2017).…”

“…In vapour deposition method, the substrate is exposed to one or more volatile precursors, which react with the substrate and/or decompose to produce the wanted deposit. It can be when the metal halide is deposited by spin -coating or other methods and volatile organic halide is deposited by ejecting it to give out vapour in the reaction chamber (Ezike et al, 2017). The vapour process is argued to be better than the solution process in planar heterojunction layout because the former produces a flat and even surface (Kesinro et al, 2017).…”

Approaches for fault passion in perovskites that for improved solar efficiency

“…A number of attempts are being made using photovoltaic panels to convert sunshine into clean electric power as the need for sustainable energy sources grows increasingly critical [1]. The solar cells made of perovskite with the active lightharvesting substance, its substrate, in cubic symmetry (Pm3m spatial grouping), and the structural equation of ABX3 are in fact the most exciting and prospective hotspot of present studies amongst multiple modern facility versions of solar power cells [2].…”