Premium
Organic Nanowire Lasers with Epitaxially Grown Crystals of Semiconducting Oligomers
Author(s) -
Torii Kazuki,
Higuchi Tetsuya,
Mizuno Kei,
Bando Kazuki,
Yamashita Kenichi,
Sasaki Fumio,
Yanagi Hisao
Publication year - 2017
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201700137
Subject(s) - nanowire , lasing threshold , materials science , epitaxy , stacking , optoelectronics , laser , phenylene , facet (psychology) , crystal (programming language) , nanotechnology , optics , chemistry , polymer , composite material , layer (electronics) , wavelength , physics , organic chemistry , psychology , social psychology , personality , computer science , big five personality traits , programming language
Epitaxially grown nanowires of semiconducting thiophene/phenylene co‐oligomers (TPCOs) were prepared by mask‐shadowing deposition on a cleaved (001) surface of a potassium chloride (KCl) crystal. Under optical pumping, single nanowires of both unsubstituted (p‐type) and cyano‐substituted (n‐type) TPCOs exhibited axial Fabry–Pérot (F‐P) lasing above a threshold fluence which decreased to 11–15 μJ cm −2 with increasing nanowire lengths. Their lying molecular orientation and stacking along the nanowire axis in both TPCOs are suitable for effective light propagation with transverse‐electric mode resulting in better lasing performances compared to two‐dimensional platelet crystals of TPCOs.