skip to main content

Title: Growth mechanisms and origin of localized surface plasmon resonance coupled exciton effects in Cu2_xS thin films

Cu2-xS thin films prepared by template free single step wet chemical method on fluorine doped tin oxide substrate without any surfactant exhibts localized surface plasmon resonance (LSPR) coupled exciton effects. Cu2-xS thin films of unique surface morphology and free carrier density due to copper vacancy is controlled by the growth temperature and time. These selectively grown Cu2-xS thin films possess tunable band gap (2.6 - 1.4 eV) due to quantum size effect. Eventhough, all the samples show satellite peak in the X-ray photoelectron spectra due to Cu vacancies, only the samples with higher oxygen concentration show LSPR in the near infrared region.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
1243210
Report Number(s):
PNNL-SA-114203
Journal ID: ISSN 2046-2069; 48374
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: RSC Advances; Journal Volume: 6; Journal Issue: 23
Publisher:
Royal Society of Chemistry
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
Environmental Molecular Sciences Laboratory