Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/94079
Title: A SnO2 nanoparticle/nanobelt and Si heterojunction light-emitting diode
Authors: Chen, Rui
Sun, Handong
Dong, Zhili
Ling, Bo
Sun, Xiaowei
Zhao, Jun Liang
Ke, Chang
Tan, Swee Tiam
Keywords: DRNTU::Engineering::Materials::Nanostructured materials
Issue Date: 2010
Source: Ling, B., Sun, X., Zhao, J. L., Ke, C., Tan, S. T., Chen, R., & et al. (2010). A SnO2 Nanoparticle/Nanobelt and Si Heterojunction Light-Emitting Diode. Journal of Physical Chemistry C, 114 (43), 18390–18395.
Series/Report no.: Journal of physical chemistry C
Abstract: Single-crystalline zero-dimensional tin dioxide (SnO2) nanoparticles and one-dimensional SnO2 nanobelts were synthesized on silicon (Si) substrates with different seed layer coatings by simple vapor-phase transport method. The crystal structure and morphology of the as-synthesized products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and Raman scattering spectroscopy. Both geometrically different nanostructures were further employed to fabricate the light-emitting diodes and showed dominant red and green emission bands at room temperature, which were ascribed to the deep defect states in SnO2. However, SnO2-nanobelts-based light-emitting diodes showed another violet emission peaking at ca. 400 nm which was attributed to the shallow defect state related to the surface states/defects. The different emission performance between nanoparticle and nanobelts devices was attributed to the larger surface-to-volume ratio of the nanobelts, which was confirmed by the Raman and photoluminescence analysis. A thin SiO2 intermediate layer was found to be crucial in achieving light emission from a n-SnO2/p-Si heterojunction with large valence band offset (ca. 2.96 eV), by which sufficient potential-energy difference can be maintained between SnO2 and Si, thus facilitating the tunneling injection of holes.
URI: https://hdl.handle.net/10356/94079
http://hdl.handle.net/10220/7412
DOI: 10.1021/jp106650p
Rights: © 2010 American Chemical Society
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

SCOPUSTM   
Citations 10

42
Updated on Jan 26, 2023

Web of ScienceTM
Citations 10

41
Updated on Jan 27, 2023

Page view(s) 10

690
Updated on Feb 3, 2023

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.