Open AccessNear-field detected photoluminescence spectra of CdS0.65Se0.35 nanoribbon at room temperature
Author(s) -
Xiao Wang,
Pan An-Lian,
Dan Liú,
Bai Yong-Qiang,
Zhaohui Zhang,
Bing-Song Zou,
Xing Zhu
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.6352
Subject(s) - photoluminescence , materials science , ternary operation , near field scanning optical microscope , waveguide , alloy , photonics , optoelectronics , absorption (acoustics) , ternary alloy , evaporation , optical microscope , optics , scanning electron microscope , composite material , physics , computer science , thermodynamics , programming language
Ternary alloy CdS0.65Se0.35 nanoribbons were successfully grown by a one-step thermal evaporation. The nanoribbons obtained have high-quality single-crystalline nature. To understand the whole picture of waveguide behavior in CdS0.65Se0.35 nanoribbons, we quantitatively studied the guided photoluminescence (PL) through individual CdS0.65Se0.35 nanoribbon by using scanning near-field optical microscopy (SNOM) at room temperature. The results show significant sustained red shift of PL spectra of the CdS0.65Se0.35 nanoribbons optical waveguide with the increase of the light propagation distance. According to our analysis, the red shift is attributed to the absorption of band-tail of states in nanoribbons. This finding may be extended to other ternary nanosyotems and be useful for fabricating new subwavelength photonic components.