Effect of Generation and Soft Lithography on Semiconducting Dendrimer Lasers

Conjugated dendrimers are promising optoelectronic materials as their modular architecture enables independent tuning of the optical, electronic, and processing properties. Dendrimer distributed feedback lasers are demonstrated, and an improvement in slope efficiency from 0.3 % to 1.6 % is seen as the dendrimer generation is increased. Simple fabrication of the lasers by soft lithography is also shown, giving a high slope efficiency of 14 %. The combination of high efficiency dendrimer gain media and soft lithographic fabrication techniques makes conjugated dendrimers attractive materials for organic semiconductor lasers.

[1]  I. Samuel,et al.  The Development of Light‐Emitting Dendrimers for Displays , 2007 .

[2]  I. Samuel,et al.  Optical amplification in a first-generation dendritic organic semiconductor. , 2004, Optics letters.

[3]  Piers Andrew,et al.  Emission Characteristics and Performance Comparison of Polyfluorene Lasers with One‐ and Two‐Dimensional Distributed Feedback , 2004 .

[4]  G. Turnbull,et al.  Polymer laser fabricated by a simple micromolding process , 2003 .

[5]  Fredrik Laurell,et al.  Operating characteristics of a semiconducting polymer laser pumped by a microchip laser , 2003 .

[6]  Ifor D. W. Samuel,et al.  Green Phosphorescent Dendrimer for Light‐Emitting Diodes , 2002 .

[7]  Justin R. Lawrence,et al.  Broadband optical amplifier based on a conjugated polymer , 2002 .

[8]  Ifor D. W. Samuel,et al.  High-efficiency green phosphorescence from spin-coated single-layer dendrimer light-emitting diodes , 2002 .

[9]  S. Mashiko,et al.  Laser emission from high-gain media of dye-doped dendrimer , 2002 .

[10]  Uli Lemmer,et al.  Conjugated polymers: lasing and stimulated emission , 2001 .

[11]  S. Mashiko,et al.  Supernarrowing mirrorless laser emission in dendrimer-doped polymer waveguides , 2000 .

[12]  Alan J. Heeger,et al.  Semiconducting (Conjugated) Polymers as Materials for Solid‐State Lasers , 2000 .

[13]  Heinz Schmid,et al.  Siloxane Polymers for High-Resolution, High-Accuracy Soft Lithography , 2000 .

[14]  I. Samuel,et al.  A Facile Iterative Procedure for the Preparation of Dendrimers Containing Luminescent Cores and Stilbene Dendrons , 1999 .

[15]  I. Samuel,et al.  CONJUGATED DENDRIMERS FOR LIGHT-EMITTING DIODES : EFFECT OF GENERATION , 1999 .

[16]  W. R. Salaneck,et al.  Electroluminescence in conjugated polymers , 1999, Nature.

[17]  George M. Whitesides,et al.  Solvent‐assisted microcontact molding: A convenient method for fabricating three‐dimensional structures on surfaces of polymers , 1997 .