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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]
Silicate perovskite is either (Mg,Fe)SiO 3 (the magnesium end-member is called bridgmanite [1]) or CaSiO 3 (calcium silicate known as davemaoite) when arranged in a perovskite structure. Silicate perovskites are not stable at Earth's surface, and mainly exist in the lower part of Earth's mantle , between about 670 and 2,700 km (420 and 1,680 mi ...
LK-99 (from the Lee-Kim 1999 research), [2] also called PCPOSOS, [3] is a gray–black, polycrystalline compound, identified as a copper-doped lead‒oxyapatite.A team from Korea University led by Lee Sukbae (이석배) and Kim Ji-Hoon (김지훈) began studying this material as a potential superconductor starting in 1999.
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.
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.
A perovskite is any material of formula ABX 3 with a crystal structure similar to that of the mineral perovskite, which consists of calcium titanium oxide (CaTiO 3). [2] The mineral was first discovered in the Ural mountains of Russia by Gustav Rose in 1839 and named after Russian mineralogist L. A. Perovski (1792–1856).
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.
Tsutomu Miyasaka (宮坂力, Miyasaka Tsutomu, born September 10, 1953), is a Japanese engineer in electrochemistry best known as the inventor of the perovskite solar cell. [ 1 ] Education