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Preparation of low-toxic Zn-Ag-In-Te quantum dots with tunable near-IR emission toward optical applications
Author(s): Tatsuya Kameyama; Kouta Sugiura; Yujiro Ishigami; Takahisa Yamamoto; Susumu Kuwabata; Tomoki Okuhata; Naoto Tamai; Tsukasa Torimoto
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Paper Abstract

Semiconductor quantum dots (QDs) composed of ZnTe-AgInTe2 solid solution ((AgIn)xZn2(1-x)Te2, ZAITe) were synthesized by a thermal reaction of corresponding metal acetates and a Te precursor in 1-dodecanethiol. TEM observations revealed that rod-shaped QDs with width of ca. 4 nm and length of ca. 16 nm were formed regardless of chemical composition of particles, x value. The absorption onset and the band-edge PL peak energy were enlarged from 1.13 to 1.53 eV and from 1.23 eV to 1.53 eV, respectively, with a decrease in x from 1.0 to 0.25. The observed optical properties of ZAITe QDs were largely tunable in the near-IR region , being suitable for optical applications.

Paper Details

Date Published: 24 April 2018
PDF: 2 pages
Proc. SPIE 10712, Optical Manipulation Conference, 107121M (24 April 2018); doi: 10.1117/12.2317057
Show Author Affiliations
Tatsuya Kameyama, Nagoya Univ. (Japan)
Kouta Sugiura, Nagoya Univ. (Japan)
Yujiro Ishigami, Nagoya Univ. (Japan)
Takahisa Yamamoto, Nagoya Univ. (Japan)
Susumu Kuwabata, Osaka Univ. (Japan)
Tomoki Okuhata, Kwansei Gakuin Univ. (Japan)
Naoto Tamai, Kwansei Gakuin Univ. (Japan)
Tsukasa Torimoto, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 10712:
Optical Manipulation Conference
Takashige Omatsu; Hajime Ishihara; Keiji Sasaki, Editor(s)

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