Comment on "Copper-Substituted Lead Perovskite Materials Constructed with Different Halides for Working (CH3NH3)2CuX4-Based Perovskite Solar Cells from Experimental and Theoretical View".
Rafael ValienteFernando RodríguezPublished in: ACS applied materials & interfaces (2020)
In recent years, two-dimensional perovskites have received considerable attention for their potential applications for optoelectronics. Contrary to previous publications, we demonstrate that (CH3NH3)2CuCl4 hybrid organic-inorganic layered perovskite does not show any room-temperature photoluminescence (PL) under UV excitation. This statement can be extended to other perovskites with general formula AMX3 or A2MX4, based on M: Cu2+ and X: Cl- or Br-. These materials, the object of increasing interest because of their efficient light absorption in a wide UV-vis-NIR range ideal for solar cells and optoelectronics, lack PL at room temperature, in contrast to recent findings reporting PL properties in this and other similar Cu2+-related materials.
Keyphrases
- room temperature
- solar cells
- ionic liquid
- aqueous solution
- working memory
- energy transfer
- magnetic resonance
- quantum dots
- molecular docking
- water soluble
- photodynamic therapy
- fluorescence imaging
- magnetic resonance imaging
- preterm infants
- climate change
- computed tomography
- drug release
- risk assessment
- high efficiency
- molecular dynamics simulations