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Investigation of electrical transport properties in solution-processed BiSe-AgMnOOH nanocomposite
In this paper, we report the fundamental electrical transport properties measured in Bi 2 Se 3 -AgMnOOH nanocomposite disc, which is prepared for the first time by convenient low temperature solution-phase chemistry in conjunction with redox-mediated methodology. The comparative structural and morph...
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| Published in: | Physical chemistry chemical physics : PCCP 2023-05, Vol.25 (2), p.1466-14617 |
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| Main Authors: | , , , , , , |
| Format: | Article |
| Language: | |
| Online Access: | Get full text |
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| Summary: | In this paper, we report the fundamental electrical transport properties measured in Bi
2
Se
3
-AgMnOOH nanocomposite disc, which is prepared for the first time by convenient low temperature solution-phase chemistry in conjunction with redox-mediated methodology. The comparative structural and morphological analyses for the nanocomposite with pristine Bi
2
Se
3
are comprehensively investigated by different material characterization techniques. The results demonstrate the successful
in situ
composite fabrication between the Bi
2
Se
3
, Ag and γ-MnOOH components. Besides, the present work introduces a systematic approach for the examination of electrical transport properties in Ohmic and non-Ohmic regimes over a wide temperature range. The results from the room temperature transport measurement exhibited that the nanocomposite demonstrated non-linearity after a certain current
I
0
(onset current), whereas Bi
2
Se
3
was linear in the entire measured current range. An enhancement of the conductance was observed for Bi
2
Se
3
-AgMnOOH compared to the pure Bi
2
Se
3
material, which is credited to the composite effect. The onset exponents
x
T
(DC conductance) and
x
f
(AC conductance) with phase-sensitive character demonstrate different values below and above 180 K separating two different phases with different conduction mechanisms. Also, flicker noise analysis established the correlation between the DC conductance in terms of Ohmic to non-Ohmic transition after the onset voltage
V
0
. This transition phenomenon from Ohmic to non-Ohmic behaviour is explained from the structural point of view of the nanocomposite. The present investigation highlights the importance of using the bottom-up solution-phase strategy for the synthesis of high quality Bi
2
Se
3
-based nanocomposites for transport studies and their possible future applications.
A novel Bi
2
Se
3
-AgMnOOH nanocomposite is prepared
via
low-temperature solution-phase synthesis. The electrical transport properties are systematically examined and highlighted for both Ohmic and non-Ohmic regions. |
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| ISSN: | 1463-9076 1463-9084 |
| DOI: | 10.1039/d3cp00642e |