Open AccessDirectional crystallization of polymer molecules through solvent annealing on a patterned substrate
Author(s) -
Hongwei Li,
Xinping Zhang
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.008422
Subject(s) - materials science , crystallization , annealing (glass) , photoresist , lithography , polymer , solvent , crystal growth , chemical engineering , optoelectronics , optics , nanotechnology , composite material , crystallography , chemistry , organic chemistry , physics , layer (electronics) , engineering
Multi-crystalline fibers of poly (3-hexylthiophene) (P3HT) have been grown on a patterned substrate through annealing the spin-coated film in the solvent of 1,5-pentanediol at 120 °C. The large-area patterns of photoresist grating have been fabricated by interference lithography, enabling growth of crystal fibers in a length scale of centimeters. The produced organic crystal fibers were characterized by microscopic, spectroscopic, and electrical conductivity performances. Mechanisms for the crystallization processes were investigated.