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A Quaternary ZnCdSeTe Nanotip Photodetector

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Author(s): Chang SJ | Hsiao CH | Wang SB | Cheng YC | Li TC | Chang SP | Huang BR | Hung SC

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 4;
Issue: 12;
Start page: 1540;
Date: 2009;
Original page

Keywords: ZnCdSeTe | Nanotips | MBE | Photodetector

ABSTRACT
Abstract The authors report the growth of needle-like high density quaternary Zn0.87Cd0.13Se0.98Te0.02nanotips on oxidized Si(100) substrate. It was found that average length and average diameter of the nanotips were 1.3 μm and 91 nm, respectively. It was also found that the as-grown ZnCdSeTe nanotips exhibit mixture of cubic zinc-blende and hexagonal wurtzite structures. Furthermore, it was found that the operation speeds of the fabricated ZnCdSeTe nanotip photodetector were fast with turn-on and turn-off time constants both less than 2 s.

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