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Updated: Sep 25, 2025

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

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エントロピーの安定効果と3Dの"空洞"ハリドペロフスキットのイオン移動

K Jayanthi1, Ioannis Spanopoulos2,3, Nourdine Zibouche4

  • 1School of Molecular Sciences and Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States.

Journal of the American Chemical Society
|April 28, 2022
PubMed
まとめ

エチレンダイアモニウム (en) を含んだ新しい"空洞"のペロブスキットは,調節可能な性質と安定性の向上を示している. 熱化学的研究により,ブロミドペロブスキットはより安定しており,空隙の欠陥にもかかわらず,エントロピーはこれらの材料を安定させます.

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Trends in Lattice Energy: Ion Size and Charge

An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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In this solution, the primary...
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Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
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