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Melt Spin Coating for X‐Ray‐Sensitive Hybrid Organic–Inorganic Layers of Small Carbazolyl‐Containing Molecules Blended with Tungsten
Author(s) -
Dobužinskas Rokas,
Poškus Andrius,
Viliūnas Mindaugas,
Jankauskas Vygintas,
Daškevičienė Marytė,
Getautis Vytautas,
Arlauskas Kęstutis
Publication year - 2019
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201900635
Subject(s) - materials science , tungsten , coating , electrode , substrate (aquarium) , optoelectronics , spin coating , composite number , analytical chemistry (journal) , signal (programming language) , organic semiconductor , charge carrier , molecule , chemical engineering , nanotechnology , composite material , chemistry , organic chemistry , metallurgy , oceanography , geology , computer science , engineering , programming language
For the first time, a blend of carbazolyl‐containing small molecules and tungsten particles for X‐ray‐sensitive layers is developed using the solvent‐free melt spin‐coating (MSC) method. The composite films fabricated on a glass substrate, using aluminum as electrodes, are applied for direct current conversion of X‐rays with high signal‐to‐noise ratio, reliable on–off switching characteristics, and short‐ and long‐term stability. To elucidate the processes of charge carrier generation by X‐rays, Monte Carlo simulations of X‐ray‐induced current are performed. The response and charge transfer processes investigated by an X‐ray pulse experiment indicate possibilities for real‐time detection.