Preparation of Novel Semiconductor Nanoparticles Composed of Low Toxic Elements and the Application to Photo-functional Materials

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  • 低毒性元素からなる新規半導体ナノ粒子の作製と光機能材料への応用
  • テイドクセイ ゲンソ カラ ナル シンキ ハンドウタイ ナノ リュウシ ノ サクセイ ト ヒカリ キノウ ザイリョウ エ ノ オウヨウ

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The chemical synthesis of ZnS-AgInS2 solid solution (ZAIS) nanoparticles and their application to photo-functional materials are reviewed in the present paper. ZAIS nanoparticles were successfully prepared by thermal decomposition of (AgIn)xZn2(1-x)(S2CNEt2)4 complex powders as a precursor. The chemical composition of the resulting particle was tunable by changing the composition (x) in the precursor powders. ZAIS nanoparticles exhibited intense photoluminescence, whose peak wavelength was blue-shifted from 780 to 540 nm with an increase in the content of Zn in ZAIS particles. The maximum quantum yield of PL was ca. 80%. The novel photofunctional devices such as luminescent devises and solar cells could be fabricated by the immobilization of ZAIS particles on solid substrates.<br>

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