Literature DB >> 25376736

Exciton-Exciton Interaction and Optical Gain in Colloidal CdSe/CdS Dot/Rod Nanocrystals.

Michele Saba1, Stefan Minniberger2, Francesco Quochi1, Juergen Roither2, Marco Marceddu1, Agnieszka Gocalinska1, Maksym V Kovalenko3, Dmitri V Talapin3, Wolfgang Heiss2, Andrea Mura1, Giovanni Bongiovanni1.   

Abstract

Exciton-exciton interaction in dot/rod CdSe/CdS nanocrystals has proved to be very sensitive to the shape of nanocrystals, due to the unique band alignment between CdSe and CdS. Repulsive exciton-exciton interaction is demonstrated, which makes CdSe/CdS dot/rods promising gain media for solution-processable lasers, with projected pump threshold densities below 1 kW cm(-2) for continuous wave lasing.
Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Entities:  

Keywords:  colloidal nanocrystals; optical nonlinearities; ultrafast spectroscopy

Year:  2009        PMID： 25376736     DOI： 10.1002/adma.200901482

Source DB:  PubMed          Journal:  Adv Mater        ISSN： 0935-9648            Impact factor:   30.849


  4 in total

1.  Red, green and blue lasing enabled by single-exciton gain in colloidal quantum dot films.

Authors:  Cuong Dang; Joonhee Lee; Craig Breen; Jonathan S Steckel; Seth Coe-Sullivan; Arto Nurmikko
Journal:  Nat Nanotechnol       Date:  2012-04-29       Impact factor: 39.213

2.  Single-mode tunable laser emission in the single-exciton regime from colloidal nanocrystals.

Authors:  Christos Grivas; Chunyong Li; Peristera Andreakou; Pengfei Wang; Ming Ding; Gilberto Brambilla; Liberato Manna; Pavlos Lagoudakis
Journal:  Nat Commun       Date:  2013       Impact factor: 14.919

3.  Mapping the spatial distribution of charge carriers in quantum-confined heterostructures.

Authors:  Andrew M Smith; Lucas A Lane; Shuming Nie
Journal:  Nat Commun       Date:  2014-07-31       Impact factor: 14.919

4.  Nanocrystal Aerogels with Coupled or Decoupled Building Blocks.

Authors:  Pascal Rusch; Björn Schremmer; Christian Strelow; Alf Mews; Dirk Dorfs; Nadja C Bigall
Journal:  J Phys Chem Lett       Date:  2019-12-05       Impact factor: 6.475
  4 in total

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