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関連する概念動画

Ionic Radii03:10

Ionic Radii

33.3K
Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
33.3K
Ionic Bonds00:42

Ionic Bonds

129.4K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
129.4K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

20.0K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.0K
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

68.1K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
68.1K
Ionic Crystal Structures02:42

Ionic Crystal Structures

16.9K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.9K
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

86.2K
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
86.2K

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関連する実験動画

Updated: Jan 22, 2026

Flash Infrared Annealing for Perovskite Solar Cell Processing
05:15

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

8.6K

液体イオン添加物を用いた長時間安定性を持つ平面ペロブスキート太陽電池

Sai Bai1,2, Peimei Da3, Cheng Li4,5

  • 1Clarendon Laboratory, University of Oxford, Oxford, UK. sai.bai@liu.se.

Nature
|July 12, 2019
PubMed
まとめ

イオン液体はペロブスキート太陽電池の効率と長期の安定性を高めます この改良された太陽電池は 長期にわたる厳しい条件下で 最小限の性能低下を示し 信頼性の高いペロブスキート光伏技術への道を切り開いています

さらに関連する動画

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
08:30

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

17.1K
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
11:38

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

19.0K

関連する実験動画

Last Updated: Jan 22, 2026

Flash Infrared Annealing for Perovskite Solar Cell Processing
05:15

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

8.6K
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
08:30

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
11:38

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

19.0K

科学分野:

  • 材料科学
  • 再生可能エネルギー
  • 太陽光発電

背景:

  • 金属ハリドペロブスキート太陽電池は非常に有望な光発電技術です.
  • 長期の安定性は改善されたが,イオン移動は,特に運用上のストレス (熱と光) の下では,依然として重要な課題である.

研究 の 目的:

  • ペロブスキート太陽電池の効率と長期の安定性を高めるため
  • ペロブスキート活性層のイオン移動の問題に対処する.

主な方法:

  • ペロブスキート膜にイオン液体を取り込みます.
  • 陽性・内在・陰性 (PIN) の光発電装置の製造
  • 高温 (70~75°C) で連続的にシミュレートされた全スペクトルの太陽光下での装置の安定性を試験する.

主要な成果:

  • イオン性液体を含む装置は,効率が向上したことを示した.
  • 装置の長期安定性の顕著な改善が観察されました.
  • 最も安定したカプセル化された装置は,厳しい条件下で1,800時間の継続的な動作後に5%の性能低下しか示さなかった.
  • 80%の性能を維持するための推定寿命は約5,200時間です.

結論:

  • イオン液体組み込みはペロブスキート太陽電池の効率と安定性を改善する効果的な戦略です.
  • このアプローチはイオン移動の問題を大幅に軽減し,デバイスの長寿を高めます.
  • 激しい環境下での長期の安定性は,信頼性の高いペロブスキート光伏技術への重要な進歩を表しています.