Open AccessCombinatorial approach for fast screening of functional materials
Author(s) -
Walter Harald,
Basset Guillaume,
Beierlein Tilman,
Von Mühlenen Adrian,
Nisato Giovanni
Publication year - 2010
Publication title -
journal of polymer science part b: polymer physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.65
H-Index - 145
eISSN - 1099-0488
pISSN - 0887-6266
DOI - 10.1002/polb.21961
Subject(s) - oled , materials science , organic semiconductor , dielectric , diode , electron mobility , silsesquioxane , benzidine , pedot:pss , polymer , optoelectronics , nanotechnology , polymer chemistry , chemistry , organic chemistry , layer (electronics) , composite material
We present an integrated system with automated sample fabrication for combinatorial investigations of solution‐processed organic materials. To illustrate the applicability of the system, we give examples of typical experimental results with organic electronic devices. Organic light emitting diodes (OLEDs) based on a poly‐( N ‐vinylcarbazole) matrix system with small molecule hole‐transporter N,N ′‐Bis(3‐methylphenyl)‐ N,N ′‐diphenyl‐benzidine (TPD) and electron transporter 2‐(4‐ tert ‐butylphenyl)‐5‐(4‐biphenylyl)‐1,3,4‐oxadiazole (PBD) were optimized. In a single experimental run, the optimum range of TPD and PBD concentrations has been determined. Furthermore, we screened the influence of a gate dielectric modification with poly(methyl silsesquioxane) in organic field effect transistors and show that the choice of the material system, which constitutes the interface between the gate dielectric and the organic semiconductor, modulates the mobility of the field‐effect device by more than two orders of magnitude. Finally, we present a combinatorial study of the influence of PEDOT‐PSS and P3HT‐PC 61 BM layer thickness variation in organic photo voltaic cells. To summarize, we describe the possibilities of a combinatorial tool for solution based multilayer devices comprising functional materials. The tool is applicable to a vast variety of such materials. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 1587–1593, 2010