NDLI: Size-controllable synthesis of Bi/Bi<sub>2</sub>O<sub>3</sub> heterojunction nanoparticles using pulsed Nd:YAG laser deposition and metal–semiconductor-heterojunction-assisted photoluminescence

Content Provider	Royal Society of Chemistry (RSC)
Author	Patil, Ranjit A. Liou, Yung Gao, Wan-Ting Yeh, P.-H. Ma, Yuan-Ron Liang, Jyun-Bo Wei, Mao-Kuo Lin, Jin-Han
Copyright Year	2016
Abstract	We synthesized Bi/Bi2O3 heterojunction nanoparticles at various substrate temperatures using the pulsed laser deposition (PLD) technique with a pulsed Nd:YAG laser. The Bi/Bi2O3 heterojunction nanoparticles consisted of Bi nanoparticles and Bi2O3 surface layers. The average diameter of the Bi nanoparticles and the thickness of the Bi2O3 surface layer are linearly proportional to the substrate temperature. The heterojunctions between the Bi nanoparticles and Bi2O3 surface layers, which are the metal–semiconductor heterojunctions, can strongly enhance the photoluminescence (PL) of the Bi/Bi2O3 nanoparticles, because the metallic Bi nanoparticles can provide massive free Fermi-level electrons for the electron transitions in the Bi2O3 surface layers. The enhancement of PL emission at room temperature by metal–semiconductor-heterojunctions make the Bi/Bi2O3 heterojunction nanoparticles potential candidates for use in optoelectronic nanodevices, such as light-emitting diodes (LEDs) and laser diodes (LDs).
Starting Page	3565
Ending Page	3571
Page Count	7
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	8
Issue Number	6
Journal	Nanoscale
DOI	10.1039/c5nr08417b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Optoelectronics Laser diode Photoluminescence Pulsed laser deposition Heterojunction
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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