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Cover Feature: Enhancing High Humidity Stability of Quasi‐2D Perovskite Thin Films through Mixed Cation Doping and Solvent Engineering (ChemNanoMat 10/2019)
Author(s) -
Naikaew Atittaya,
Kumnorkaew Pisist,
Supasai Thidarat,
Suwanna Sujin,
Hunkao Rutchapon,
Srikhirin Toemsak,
Kanjanaboos Pongsakorn
Publication year - 2019
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201900260
Subject(s) - formamidinium , perovskite (structure) , doping , thermal stability , materials science , thin film , iodide , perovskite solar cell , stability (learning theory) , chemical engineering , layer (electronics) , nanotechnology , chemistry , optoelectronics , inorganic chemistry , computer science , crystallography , engineering , machine learning
Quasi‐2D perovskites strike a good balance between high performance and stability for solar cell applications. Formamidinium iodide doping could improve thermal stability and broaden optical absorption, yet tends to cause poor morphology. The work featured on this cover presents a new strategy to optimize the morphology, electronic properties, and humidity resistivity through mixed cation doping (MCD) and gradual deposition of methylammonium and formamidinium cations onto the perovskite layer. The underlying mechanism is revealed by interaction energies of cation mixtures in solution and computational analysis of perovskite structures. More information can be found in the Full Paper by Pongsakorn Kanjanaboos et al. on page 1280 in Issue 10, 2019 (DOI: 10.1002/cnma.201900189).