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Publication No: IN202211050720 [India] Application No: 202211050720
Title: Ionic-asymmetric aliphatic diamine terminated rylenedicarboximide organic electronic materials
Publication Date: 08-03-2024 File Date: 02-09-2022
Inventor(s): Rachana Kumar ; Mehak Ahuja ; Sushil Kumar ; Asit Patra ; Rajiv K Singh ; Komal Bhardwaj ; Samya Naqvi
IPC Classification: A61B17/82, G06F11/10, A61K9/48, G02B5/30, A23L19/00
Abstract: The future technology to provide electricity at lower cost and low carbon footprint and roll-to-roll compatibility. Low temperature  solution processable organic electron transport layer materials soluble in orthogonal solvent to other layer materials are in demand.  The present invention describes the synthesis of aliphatic diamine terminated rylenedicarboximide product, i.e, ionic asymmetric(2- aminoethyl)1,3 propanediamine)3,4,9,10-naphthalenedicarboximide (qAPA-NDCI)showing excellent properties in OSC as electron  transport layer material with average power conversion efficiency ~7%. This ETL material show good film forming capabilities and  possess crystalline nature which is essential for facile charge transport. On quaternization this ammonium salt possess molecular  dipole moment which lowers its work function and improve the mobilities, conductivities and device performance. Although high  efficiencies have been reported with rylene based ETL materials which are synthesized using multistep and complicated reactions, our  molecules have promising results in OSCs following easy synthesis methods and device fabrication conditions.
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