Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT
We report, for the first time, the synthesis of colloidal copper indium selenide (CuInSe2) nanocrystals (NCs) possessing a gradient stoichiometry that is potentially tunable by the presence of a conducting polymer, i.e., poly(3-hexyl thiophene) (P3HT) in the synthesis medium. Dibenzyl ether (DBE) wa...
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sg-ntu-dr.10356-996962020-06-01T10:01:41Z Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT Liang, Yen Nan Yu, Kui Yan, Qingyu Hu, Xiao School of Materials Science & Engineering Materials Science and Engineering We report, for the first time, the synthesis of colloidal copper indium selenide (CuInSe2) nanocrystals (NCs) possessing a gradient stoichiometry that is potentially tunable by the presence of a conducting polymer, i.e., poly(3-hexyl thiophene) (P3HT) in the synthesis medium. Dibenzyl ether (DBE) was used as a reaction medium, whereas copper acetylacetonate (Cu(acac)2), indium acetylacetonate (In(acac)3), and selenium powder were used as Cu, In, and Se sources, respectively. The Se precursor was tri-n-octylphosphine selenide (TOP-Se). Without the presence of P3HT, the resulting NCs consist of a p-type (Cu1+ rich) core and an n-type (In3+ rich) shell. Such a gradient stoichiometry was moderated to be substantially more homogeneous because the presence of P3HT is believed to have significantly reduced the reactivity difference between Cu(acac)2 and In(acac)3, as well as and their respective monomers. Furthermore, the P3HT also acts as a surface coordination species, contributing to the readily preparation of conducting polymer-NCs hybrids by a single-step synthesis. The understandings of this work can serve as a guide for design and synthesis of conducting polymer-NCs hybrids based on various ternary or quaternary compound semiconductors with different core–shell composition gradient. 2013-11-08T06:22:44Z 2019-12-06T20:10:29Z 2013-11-08T06:22:44Z 2019-12-06T20:10:29Z 2013 2013 Journal Article Liang, Y. N., Yu, K., Yan, Q., & Hu, X. (2013). Colloidal CuInSe 2 Nanocrystals: From Gradient Stoichiometry toward Homogeneous Alloyed Structure Mediated by Conducting Polymer P3HT. ACS Applied Materials & Interfaces, 5(10), 4100-4106. https://hdl.handle.net/10356/99696 http://hdl.handle.net/10220/17482 10.1021/am3032212 en ACS applied materials & interfaces |
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Materials Science and Engineering Liang, Yen Nan Yu, Kui Yan, Qingyu Hu, Xiao Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT |
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We report, for the first time, the synthesis of colloidal copper indium selenide (CuInSe2) nanocrystals (NCs) possessing a gradient stoichiometry that is potentially tunable by the presence of a conducting polymer, i.e., poly(3-hexyl thiophene) (P3HT) in the synthesis medium. Dibenzyl ether (DBE) was used as a reaction medium, whereas copper acetylacetonate (Cu(acac)2), indium acetylacetonate (In(acac)3), and selenium powder were used as Cu, In, and Se sources, respectively. The Se precursor was tri-n-octylphosphine selenide (TOP-Se). Without the presence of P3HT, the resulting NCs consist of a p-type (Cu1+ rich) core and an n-type (In3+ rich) shell. Such a gradient stoichiometry was moderated to be substantially more homogeneous because the presence of P3HT is believed to have significantly reduced the reactivity difference between Cu(acac)2 and In(acac)3, as well as and their respective monomers. Furthermore, the P3HT also acts as a surface coordination species, contributing to the readily preparation of conducting polymer-NCs hybrids by a single-step synthesis. The understandings of this work can serve as a guide for design and synthesis of conducting polymer-NCs hybrids based on various ternary or quaternary compound semiconductors with different core–shell composition gradient. |
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School of Materials Science & Engineering |
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School of Materials Science & Engineering Liang, Yen Nan Yu, Kui Yan, Qingyu Hu, Xiao |
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Article |
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Liang, Yen Nan Yu, Kui Yan, Qingyu Hu, Xiao |
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Liang, Yen Nan |
title |
Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT |
title_short |
Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT |
title_full |
Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT |
title_fullStr |
Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT |
title_full_unstemmed |
Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT |
title_sort |
colloidal cuinse 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer p3ht |
publishDate |
2013 |
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https://hdl.handle.net/10356/99696 http://hdl.handle.net/10220/17482 |
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1681059616712032256 |