Journal article
Authors list: Albrecht, G; Geis, C; Herr, JM; Ruhl, J; Göttlich, R; Schlettwein, D
Publication year: 2019
Pages: 321-326
Journal: Organic Electronics
Volume number: 65
ISSN: 1566-1199
DOI Link: https://doi.org/10.1016/j.orgel.2018.11.032
Publisher: Elsevier
Abstract:
Contact formation was investigated for the recently introduced organic light emitting molecule 1-(pyridin-2-yl)3-(quinolin-2-yl)imidazo[1,5-a]quinoline (PCIC) by in situ atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM) during physical vapor deposition (PVD). The hole conductors poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and poly(9-vinylcarbazole) (PVK), as well as the electron conductor bathocuproine (BCP) were used. Different growth modes were found for PCIC films and charge carrier injection barriers were identified. Based on these findings, electroluminescent layer structures with an imidazo [1,5-al quinoline were prepared for the first time and effects of contact formation on radiative recombination were studied. Depending on the chosen contact material, blue PCIC electroluminescence or significantly red-shifted emission presumably caused by electroplex formation could be obtained. Using PCIC in a host-guest system within a matrix of PVK and 1,3-bis[5-(4-tert-butylphenyl)-2[1,3,4]oxadiazolyl]benzene (Oxd-7), led to blue emission at improved luminescence. The studied interactions of PCIC with typical contact materials reveal the potential and limitations to use PCIC as an electroluminescent material.
Citation Styles
Harvard Citation style: Albrecht, G., Geis, C., Herr, J., Ruhl, J., Göttlich, R. and Schlettwein, D. (2019) Electroluminescence and contact formation of 1-(pyridin-2-yl)-3-(quinolin-2-yl)imidazo [1,5-a] quinoline thin films, Organic Electronics, 65, pp. 321-326. https://doi.org/10.1016/j.orgel.2018.11.032
APA Citation style: Albrecht, G., Geis, C., Herr, J., Ruhl, J., Göttlich, R., & Schlettwein, D. (2019). Electroluminescence and contact formation of 1-(pyridin-2-yl)-3-(quinolin-2-yl)imidazo [1,5-a] quinoline thin films. Organic Electronics. 65, 321-326. https://doi.org/10.1016/j.orgel.2018.11.032
