Limits...
Hydrothermal Synthesis Au-Bi2Te3 Nanocomposite Thermoelectric Film with a Hierarchical Sub-Micron Antireflection Quasi-Periodic Structure.

Tian J, Zhang W, Zhang Y, Xue R, Wang Y, Zhang Z, Zhang D - Int J Mol Sci (2015)

Bottom Line: In this work, Au-Bi(2)Te(3) nanocomposite thermoelectric film with a hierarchical sub-micron antireflection quasi-periodic structure was synthesized via a low-temperature chemical route using Troides helena (Linnaeus) forewing (T_FW) as the biomimetic template.This method combines chemosynthesis with biomimetic techniques, without the requirement of expensive equipment and energy intensive processes.The heterogeneity of heat source density distribution of the Au-Bi(2)Te(3) nanocomposite thermoelectric film opens up a novel promising technique for generating thermoelectric power under illumination.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China. tianjunlong666@sjtu.edu.cn.

ABSTRACT
In this work, Au-Bi(2)Te(3) nanocomposite thermoelectric film with a hierarchical sub-micron antireflection quasi-periodic structure was synthesized via a low-temperature chemical route using Troides helena (Linnaeus) forewing (T_FW) as the biomimetic template. This method combines chemosynthesis with biomimetic techniques, without the requirement of expensive equipment and energy intensive processes. The microstructure and the morphology of the Au-Bi(2)Te(3) nanocomposite thermoelectric film was analyzed by X-ray diffraction (XRD), field-emission scanning-electron microscopy (FESEM), and transmission electron microscopy (TEM). Coupled the plasmon resonances of the Au nanoparticles with the hierarchical sub-micron antireflection quasi-periodic structure, the Au-Bi(2)Te(3) nanocomposite thermoelectric film possesses an effective infrared absorption and infrared photothermal conversion performance. Based on the finite difference time domain method and the Joule effect, the heat generation and the heat source density distribution of the Au-Bi(2)Te(3) nanocomposite thermoelectric film were studied. The heterogeneity of heat source density distribution of the Au-Bi(2)Te(3) nanocomposite thermoelectric film opens up a novel promising technique for generating thermoelectric power under illumination.

No MeSH data available.


Related in: MedlinePlus

(a–c) SEM images of Troides helena (Linnaeus) forewing (T_FW); (d–f) SEM images of Au-Bi2Te3_T_FW. The inset of (f) is the elemental maps showing the distribution of Au, Bi, and Te atoms on the surface of the hierarchical sub-micron antireflection quasi-periodic structure (HSAQS) of T_FW.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4490460&req=5

ijms-16-12547-f001: (a–c) SEM images of Troides helena (Linnaeus) forewing (T_FW); (d–f) SEM images of Au-Bi2Te3_T_FW. The inset of (f) is the elemental maps showing the distribution of Au, Bi, and Te atoms on the surface of the hierarchical sub-micron antireflection quasi-periodic structure (HSAQS) of T_FW.

Mentions: Scanning-electron microscopy (SEM) of the T_FW is shown in Figure 1a–c. As show in Figure 1a,b, along the length of the scale of the T_FW, it exhibited periodic triangular roof-type ridges and formed the periodic antireflection structure. The periodic triangular roof-type ridges are beneficial to focus light into the scale interior by multi-antireflection. We can also observe that staggered windows are present between every two ridges, which enhanced light-harvesting capacity. As shown in Figure 1c, declining microribs run down the sides of the clearly exhibited ridge. These microribs assist in the trapping of light due to the inducing of internal light scattering. The ridges, microribs and windows construct a hierarchical sub-micron antireflection quasi-periodic structure (HSAQS) that effectively traps light. The combination of a melanin/chitin composite with this HSAQS endows the black T_FW with an effective visible light trapping capability [28,40,42]. From the SEM images of Au-Bi2Te3_T_FW (Figure 1d–f), these figures clearly exhibit that the Au-Bi2Te3 nanocomposite were deposited and agglomerated into thin film on the ridges and microribs. Moreover, the parallel periodic triangular roof-type ridges and windows of the T_FW were well maintained. The successful deposition of Au-Bi2Te3 nanocomposite onto the surface of the HSAQS of the T_FW was also confirmed by energy dispersive spectrometer (EDS) analysis, as shown in the inset of Figure 1f.


Hydrothermal Synthesis Au-Bi2Te3 Nanocomposite Thermoelectric Film with a Hierarchical Sub-Micron Antireflection Quasi-Periodic Structure.

Tian J, Zhang W, Zhang Y, Xue R, Wang Y, Zhang Z, Zhang D - Int J Mol Sci (2015)

(a–c) SEM images of Troides helena (Linnaeus) forewing (T_FW); (d–f) SEM images of Au-Bi2Te3_T_FW. The inset of (f) is the elemental maps showing the distribution of Au, Bi, and Te atoms on the surface of the hierarchical sub-micron antireflection quasi-periodic structure (HSAQS) of T_FW.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4490460&req=5

ijms-16-12547-f001: (a–c) SEM images of Troides helena (Linnaeus) forewing (T_FW); (d–f) SEM images of Au-Bi2Te3_T_FW. The inset of (f) is the elemental maps showing the distribution of Au, Bi, and Te atoms on the surface of the hierarchical sub-micron antireflection quasi-periodic structure (HSAQS) of T_FW.
Mentions: Scanning-electron microscopy (SEM) of the T_FW is shown in Figure 1a–c. As show in Figure 1a,b, along the length of the scale of the T_FW, it exhibited periodic triangular roof-type ridges and formed the periodic antireflection structure. The periodic triangular roof-type ridges are beneficial to focus light into the scale interior by multi-antireflection. We can also observe that staggered windows are present between every two ridges, which enhanced light-harvesting capacity. As shown in Figure 1c, declining microribs run down the sides of the clearly exhibited ridge. These microribs assist in the trapping of light due to the inducing of internal light scattering. The ridges, microribs and windows construct a hierarchical sub-micron antireflection quasi-periodic structure (HSAQS) that effectively traps light. The combination of a melanin/chitin composite with this HSAQS endows the black T_FW with an effective visible light trapping capability [28,40,42]. From the SEM images of Au-Bi2Te3_T_FW (Figure 1d–f), these figures clearly exhibit that the Au-Bi2Te3 nanocomposite were deposited and agglomerated into thin film on the ridges and microribs. Moreover, the parallel periodic triangular roof-type ridges and windows of the T_FW were well maintained. The successful deposition of Au-Bi2Te3 nanocomposite onto the surface of the HSAQS of the T_FW was also confirmed by energy dispersive spectrometer (EDS) analysis, as shown in the inset of Figure 1f.

Bottom Line: In this work, Au-Bi(2)Te(3) nanocomposite thermoelectric film with a hierarchical sub-micron antireflection quasi-periodic structure was synthesized via a low-temperature chemical route using Troides helena (Linnaeus) forewing (T_FW) as the biomimetic template.This method combines chemosynthesis with biomimetic techniques, without the requirement of expensive equipment and energy intensive processes.The heterogeneity of heat source density distribution of the Au-Bi(2)Te(3) nanocomposite thermoelectric film opens up a novel promising technique for generating thermoelectric power under illumination.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China. tianjunlong666@sjtu.edu.cn.

ABSTRACT
In this work, Au-Bi(2)Te(3) nanocomposite thermoelectric film with a hierarchical sub-micron antireflection quasi-periodic structure was synthesized via a low-temperature chemical route using Troides helena (Linnaeus) forewing (T_FW) as the biomimetic template. This method combines chemosynthesis with biomimetic techniques, without the requirement of expensive equipment and energy intensive processes. The microstructure and the morphology of the Au-Bi(2)Te(3) nanocomposite thermoelectric film was analyzed by X-ray diffraction (XRD), field-emission scanning-electron microscopy (FESEM), and transmission electron microscopy (TEM). Coupled the plasmon resonances of the Au nanoparticles with the hierarchical sub-micron antireflection quasi-periodic structure, the Au-Bi(2)Te(3) nanocomposite thermoelectric film possesses an effective infrared absorption and infrared photothermal conversion performance. Based on the finite difference time domain method and the Joule effect, the heat generation and the heat source density distribution of the Au-Bi(2)Te(3) nanocomposite thermoelectric film were studied. The heterogeneity of heat source density distribution of the Au-Bi(2)Te(3) nanocomposite thermoelectric film opens up a novel promising technique for generating thermoelectric power under illumination.

No MeSH data available.


Related in: MedlinePlus