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Polycarbazole-based networks made by photo-crosslinking for hole transporting layers of OLED devices
- Source :
-
Organic Electronics . Dec2011, Vol. 12 Issue 12, p2253-2257. 5p. - Publication Year :
- 2011
-
Abstract
- Abstract: Cross-linkable polycarbazole copolymers have been synthesized starting from 3,6-diiodo-9-(2-ethylhexyl)carbazole and 3,6-diodo-9-[6-(3-ethyloxetan-3-ylmethoxy)hexyl]carbazole monomers in a Ni(0)-catalyzed Yamamoto-type aryl–aryl coupling. The synthesized materials were characterized by various techniques including differential scanning calorimetry, thermogravimetry and cyclic voltammetry. Insoluble layers of the copolymers have been obtained by photo-crosslinking thin films of the materials. Organic light emitting diodes using the crosslinked polycarbazole networks as hole transporting layer demonstrated a turn-on voltage of ca. 4V, a maximum brightness of 15,000cd/m2, and maximum OLED efficiency of 8.5cd/A. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 15661199
- Volume :
- 12
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Organic Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 67324459
- Full Text :
- https://doi.org/10.1016/j.orgel.2011.08.018