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http://dx.doi.org/10.5369/JSST.2002.11.3.183

Photoluminescence from silicon nanocrystals in silicon ion implanted SiO2 layers  

Kim, Kwang-Hee (Department of Electronic Engineering, Kyungpook National University)
Oh, Hang-Seok (Department of Electrical Engineering, Pohang University of Science and Technology)
Jang, Tae-Su (Department of Electrical Engineering, Pohang University of Science and Technology)
Kwon, Young-Kyu (Department of Electronics, Uiduk University)
Lee, Yong-Hyun (Department of Electronic Engineering, Kyungpook National University)
Publication Information
Journal of Sensor Science and Technology / v.11, no.3, 2002 , pp. 183-190 More about this Journal
Abstract
Photoluminescence(PL) properties of $Si^+$-implanted $SiO_2$ film, which was thermally grown on c-Si substrate, is reported. We have compared room temperature photoluminescence (PL) spectra of the samples which was made in several kinds of implantation, subsequent annealing and $SiO_2$ film thickness. XRD data was correlated with the PL spectra. Silicon nanocrystals in $SiO_2$ film is considered as the origin of the photoluminescence. PL spectra was investigated after wet etching of the $SiO_2$ film by using BOE (Buffered Oxide Etchant) at every one minute. PL peak wavelength was varied as the etching is proceeded. These results indicate that the quantity and the distribution of dominant size of Si nanocrystals in $SiO_2$ film seem to have a direct effect on PL spectrum.
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