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Perovskite (pronunciation: / p ə ˈ r ɒ v s k aɪ t /) is a calcium titanium oxide mineral composed of calcium titanate (chemical formula Ca Ti O 3).Its name is also applied to the class of compounds which have the same type of crystal structure as CaTiO 3, known as the perovskite structure, which has a general chemical formula A 2+ B 4+ (X 2−) 3. [6]
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.
PVSC is also where the most notable breakthroughs in PV are often first announced, such as record Solar-cell efficiency, [4] new technologies like perovskite, TOPCon, heterojunction (HJT), and tandem cells, derivation of new algorithms, and discoveries of new phenomena such as Potential-induced degradation and light and elevated temperature ...
Perovskite MAPbX 3 thin films have been shown to be promising materials for optical gain applications such as lasers and optical amplifiers. [137] [138] Afterwards, the lasing properties of colloidal perovskite NCs such as CsPbX 3 nanocubes, [19] [139] MAPbBr 3 nanoplatelets [113] and FAPbX 3 nanocubes [83] [82] were also demonstrated.
Under stress, perovskite solar cells become unstable and release gas. [11] [12] Ho-Baille has made use of gas chromatography–mass spectrometry to identify the degradation pathways of perovskite solar cells. She showed it is possible to prevent degassing using a low-cost polymer-glass stack, which protects the perovskite solar cells from ...
Silva's research on nanotechnology, large-area electronics, carbon nanotubes, perovskite solar cell, and organic solar cell has resulted in over 680 presentations at international conferences and over 650 journal papers. [7] As of March 2023, he has over 29,000 citations with an H-index of 87. [16]
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.
MgCNi 3 is a metallic perovskite compound and has received lot of attention because of its superconducting properties. An even more exotic type of perovskite is represented by the mixed oxide-aurides of Cs and Rb, such as Cs 3 AuO, which contain large alkali cations in the traditional "anion" sites, bonded to O 2− and Au − anions. [citation ...