The impact of laser-target absorption depth on the surface and internal morphology of matrix-assisted pulsed laser evaporated conjugated polymer thin films

TitleThe impact of laser-target absorption depth on the surface and internal morphology of matrix-assisted pulsed laser evaporated conjugated polymer thin films
Publication TypeJournal Article
Year of Publication2009
AuthorsR Pate, and AD Stiff-Roberts
JournalChemical Physics Letters
Volume477
Issue4-6
Start Page406
Pagination406 - 410
Date Published08/2009
Abstract

Poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-(1-cyanovinylene)-phenylene] (MEH-CN-PPV) thin films were deposited using resonant infrared matrix-assisted pulsed laser evaporation (RIR-MAPLE) from targets comprising differing ratios of phenol to ice to assess the impact of laser-target absorption depth on film morphology. The surface and internal morphologies of as-deposited and annealed films indicate that the RIR-MAPLE process can be tuned to favor ablation with more or less vaporous ejecta by tuning the laser-target absorption depth. The demonstrated ability to tune between more or less vaporous ejecta strongly impacts the subsequent morphologies of the deposited films, and has important implications to realizing optoelectronic devices using the RIR-MAPLE process. © 2009 Elsevier B.V. All rights reserved.

DOI10.1016/j.cplett.2009.07.038
Short TitleChemical Physics Letters