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Crystal structure of CH 3 NH 3 PbX 3 perovskites (X=I, Br and/or Cl). The methylammonium cation (CH 3 NH 3 +) is surrounded by PbX 6 octahedra. [13]The name "perovskite solar cell" is derived from the ABX 3 crystal structure of the absorber materials, referred to as perovskite structure, where A and B are cations and X is an anion.
A paper titled "Ageing effects of perovskite solar cells under different environmental factors and electrical load conditions" published in 2018 in the journal [2] corresponded to a paper previously published in the journal Nature Energy as "Systematic investigation of the impact of operation conditions on the degradation behaviour of perovskite solar cells". [3]
The main obstacle to viable tin perovskite solar cells is the instability of tin's oxidation state Sn 2+, which is easily oxidized to the stabler Sn 4+. [10] In solar cell research, this process is called self-doping, [11] because the Sn 4+ acts as a p-dopant and reduces solar cell efficiency.
However, the solar cells are prone to degradation due to volatility of the organic [CH 3 NH 3] + I − salt. The all-inorganic perovskite cesium lead iodide perovskite (CsPbI 3) circumvents this problem, but is itself phase-unstable, the low temperature solution methods of which have only been recently developed. [47]
Since 2009, Miyasaka has been working on research and development of perovskite solar cell, therefore, he won the Clarivate Citation Laureates in 2017. [7] In 2017 Miyasaka was awarded the Hamakawa award for his contribution in photovoltaic science and technology development.
Methylammonium lead halides (MALHs) are solid compounds with perovskite structure and a chemical formula of [CH 3 NH 3] + Pb 2+ (X −) 3, where X = Cl, Br or I. They have potential applications in solar cells, [2] lasers, light-emitting diodes, photodetectors, radiation detectors, [3] [4] scintillator, [5] magneto-optical data storage [6] and ...
Perovskite solar cells are very new and many research in solar cells is focussed on these promising technologies. In these solar cells different effects have been observed after light soaking. Both increases and decreases in device performance have been found. These effects can be reversible as well as permanent.
His group has investigated solutions (one-step and sequential deposition) and sublimation-deposited perovskite solar cells and obtained a power conversion efficiency of 25%. His group has developed a Perovskite Solar Cells Module (area 26.02 cm2) with an efficiency of 22.4%. Their research has been covered in several international news outlets.