22‐3: Tuning ETL Mobility by Disorder Passivation. Issue 1 (28th June 2021)

• Record Type: Journal Article
• Authors: Kaiser, Simon; Symalla, Franz; Wehl, Daniel; Neumann, Tobias; Wenzel, Wolfgang
• Is Part Of: Digest of technical papers. Volume 52:Issue 1(2021)
• Page Start: 270
• Page End: 273
• Publication Date: 2021-06-28
• Subjects: Tuning OLED performance -- Virtual Design of OLEDs -- Multiscale OLED simulations -- Design rules of OLED materials and devices; Information display systems -- Congresses; 621.3815422
• DOI: 10.1002/sdtp.14666
• Languages: English
• ISSNs: 0097-966X

Abstract

Abstract : In organic electronics (OE) application a high degree of control of material parameters such as transport levels and charge carrier mobilities is required to build a balanced device. We demonstrate that electron mobility of the prototypical electron transport material TPBi can be tuned freely by mixing it with a secondary electron transport inert material. We can in particular increase electron mobility in TPBi by up to a factor of 10 by diluting TPBi. This increase is due to a reduced electrostatic disorder in the mixed morphology. Using our predictive ab‐initio based modeling tools we can find the optimal mixture to maximize or pinpoint electron mobility in TPBi.