The excellent luminescence and gain properties of substituted oligothiophenes are exploited to imprint one-dimensional photonic crystals for the fabrication of printed distributed feedback (DFB) cavities. We demonstrate the dry-printing of organic semiconductor lasers, carrying out the realization of a complete device by a single nanofabrication step, which can be perfectly integrated with other existing planar semiconductor processing and etching technologies. In particular, a thiophene-based pentamer with very good amplified spontaneous emission and optical gain properties was used to fabricate a single-mode, first-order DFB lasers exhibiting an emission with a linewidth of 1.1 nm at about 636 nm for excitation fluences larger than 27 μJ/cm2. These results clearly indicate that substituted oligothiophene-S,S- dioxides are promising candidates for solid-state lasers realizable by emerging nanopatteming technologies.
|Autori:||D. PISIGNANO; L. PERSANO; E. MELE; P. VISCONTI; M. ANNI; G. GIGLI; R. CINGOLANI; L. FAVARETTO; AND G. BARBARELLA|
|Titolo:||First order imprinted organic distributed feedback laser|
|Anno del prodotto:||2005|
|Digital Object Identifier (DOI):||10.1016/j.synthmet.2005.07.273|
|Appare nelle tipologie:||1.1 Articolo in rivista|