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Synthesis and optical properties of germanium nanorod array fabricated on porous anodic alumina and Si-based templates

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9 Author(s)
Mei, Y.F. ; Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China ; Li, Z.M. ; Chu, R.M. ; Tang, Z.K.
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A large quantity of monocrystalline germanium nanorods and their arrays were produced on a porous anodic alumina (PAA) template utilizing saturated vapor adsorption, during which the Ge gas pressure was saturated at a high temperature in an airtight quartz tube. Raman scattering and photoluminescence (PL) results were acquired from the Ge nanorod array and discussed in details. Using Si-based PAA template with 25 nm nanopores, Si-based Ge nanorod array with a large area (larger than 1×1 cm2) was obtained and the quantum confinement effect is demonstrated in Raman spectrum.

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Applied Physics Letters  (Volume:86 ,  Issue: 2 )