Nanoscale morphology revealed at the interface between colloidal quantum dots and organic semiconductor films

Publication Type:

Journal Article

Source:

Nano Lett., ACS Publications, Volume 10, Issue 7, p.2421-2426 (2010)

ISBN:

1530-6984

Keywords:

2010, 2013 and earlier

Abstract:

The degree of interpenetration at the interface between colloidal quantum dots (QDs) and organic semiconductor molecules commonly employed in hybrid
light-emitting devices (QD-LEDs) has been examined using tapping-mode
atomic force microscopy. Both phase separation-driven and Contact
Printing-enabled QD/semiconductor heterojunction fabrication methodologies
lead to significant QD embedment in the underlying organic film with the
greatest degree of QD penetration observed for QD monolayers that have
been contact printed. The relative performance of QD-LEDs fabricated via
three different methods using the same materials set has also been
investigated.

Notes:

PMID: 20545311