Huang, Peng published the artcileAsymmetrically Substituted Phthalocyanines as Dopant-Free Hole Selective Layers for Reliability in Perovskite Solar Cells, Safety of Phthalonitrile, the main research area is metal phthalocyanines perovskite solar cell.
Dopant-free metal phthalocyanines are viable alternatives to the classical 2,2′,7,7′-tetrakis-(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD) in perovskite solar cells (PSCs), due to their appealing optoelec. properties and chem. stability. However, low carrier concentration, transportability, and narrow band gap limit their application. Here, we designed and investigated six innovative asym. substituted metal phthalocyanines (MPcs, M = Zn or Cu), and established the correlation among the electronic structure, charge carrier transfer parameter, and core metal/substitutions in MPcs by transient absorption spectroscopy and ESR. We probed the charge transport properties of ZnPcs including their carrier lifetime, diffusion coefficient, and diffusion length by transient absorption spectroscopy. We noted that ZnPcAE presents a longer diffusion length (1.94 nm) than the control ZnPcTB4 (0.80 nm), which is advantageous for reducing charge recombination and gives a higher power conversion efficiency in the fabricated PSCs. Importantly, the devices with MPcs yielded improved stability under multistress conditions. Our work provides a mol. guideline for designing MPcs and their application as dopant-free hole-transporting materials for perovskite solar cell fabrication.
ACS Applied Energy Materials published new progress about Contact angle. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Safety of Phthalonitrile.
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts