Challenge of Stability Occurs in Perovskite Solar Cell Technology

One of the present popular topics in photovoltaic technology research centres on the use of inorganic halide perovskites as solar cells as of the high power conversion efficacy and the low-cost fabrication.

While the solar cell energy is presently being utilized by numerous government and industrial entities, it remains restrictively costly to many individuals who intend to use it. There is a requirement for cost-effective, efficient solar cells than the conventional silicon solar cells so that more people can have access to the technology. One of the present popular topics in photovoltaic technology research centres on the use of inorganic and organic halide perovskites as solar cells as the high power conversion efficacy and the cost-effective fabrication.

Perovskites are a sort of crystalline substance that can prepared using an extensive variety of distinct chemical combinations. One of the numerous distinct perovskites formulations that can be utilized in solar cells, the methylammonium lead iodide perovskite has been the most extensively studied. Solar cells prepared from this substance have been able to reach efficacies ranging from 20% and are cheaper to manufacture than silicon. But, their short lifespans have prevented them from becoming a viable silicon solar cell alternative..

For creating better solar cells in the future, members of the Energy Materials and Surface Sciences unit at the Okinawa Institute of Science and Technology Graduate University OIST have been identifying the cause of rapid degradation of such perovskite solar cells.

Dr.ShenghaoWang suggests that the degradation of MAPbl3 perovskites might not be a fiable issue. His study discloses that iodide-based perovskites will globally produce a gaseous form of iodine, 12, during operation that in turn results further degradation of perovskite. While numerous scientists have pointed to other sources, like atmospheric oxygen, moisture, and heat as the cause of MAPbl3 degradation, the fact that such solar cells continue to degrade even in the absence of such factors, resulted Wang to believe that a property within such PSCs was leading the breakdown of substance.

“We identified that such PSCs are self-exposed to 12 vapours at the onset of degradation that led to accelerated decomposition of the MAPBlsperovskite substance into Pbl2,” explains Wang.

“Because of the relatively high pressure of vapour of 12, it can rapidly permeate the remaining of the perovskite substance causing damage of the entire PSC.

Such type of researchers at the OIST are continuing to identify distinct sorts of perovskite substances in order to find more effective, cost-efficient and long lifespan perovskite substance suitable for use. Their eventual goal is to make solar cells that are affordable, stable, and efficient so that they will be more accessible to the general population