2021
DOI: 10.1021/acsnano.1c04660
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Tunable Band-Edge Potentials and Charge Storage in Colloidal Tin-Doped Indium Oxide (ITO) Nanocrystals

Abstract: Degenerately doped metal-oxide nanocrystals (NCs) show localized surface plasmon resonances (LSPRs) that are tunable via their tunable excess charge-carrier densities. Modulation of excess charge carriers has also been used to control magnetism in colloidal doped metal-oxide NCs. The addition of excess delocalized conduction-band (CB) electrons can be achieved through aliovalent doping or by postsynthetic techniques such as electrochemistry or photodoping. Here, we examine the influence of charge-compensating … Show more

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Cited by 17 publications
(39 citation statements)
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“…33,47 However, <n max > in undoped ZnO NCs was found to be on the order of 10 20 cm −3 , which is an order of magnitude smaller than that for doped In 2 O 3 NCs, where aliovalent doping is expected to increase the electron density. 13,17,45 Very similar trends in electron density are obtained with size series of Sn:In 2 O 3 NCs with different Sn atom % (Figure S18). Analogous to the results of the size series, for the doping series, volumetric addition of CoCp* 2 leads to an increase in the electron density and a simultaneous increase in the volume fraction of the plasmonic core (Figure S19).…”
Section: ■ Results and Discussionsupporting
confidence: 72%
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“…33,47 However, <n max > in undoped ZnO NCs was found to be on the order of 10 20 cm −3 , which is an order of magnitude smaller than that for doped In 2 O 3 NCs, where aliovalent doping is expected to increase the electron density. 13,17,45 Very similar trends in electron density are obtained with size series of Sn:In 2 O 3 NCs with different Sn atom % (Figure S18). Analogous to the results of the size series, for the doping series, volumetric addition of CoCp* 2 leads to an increase in the electron density and a simultaneous increase in the volume fraction of the plasmonic core (Figure S19).…”
Section: ■ Results and Discussionsupporting
confidence: 72%
“…Photodoping studies on a doping series of Sn:In 2 O 3 NCs and other doped metal oxides have reported similar observations. 17,32,33,35,45 Here, we confirm and interpret these trends by analyzing the distribution of electrons between the core and depletion layer as chemical doping proceeds.…”
Section: ■ Results and Discussionsupporting
confidence: 58%
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