Enhanced thermoelectric performance of highly oriented polycrystalline SnSe based composites incorporated with SnTe nanoinclusions

Guo, Hai-Feng; Xin, Hongxing; Qin, Xiaoying; Zhang, Jian; Li, Di; Li, Yuanyue; Song, Caixia; Liu, Cong

doi:10.1016/j.jallcom.2016.07.291

Cited by 52 publications

(39 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For doping with other elements (such as Na [274] and Ag [268]), Figure 27(h) shows a HRTEM image of Ag-doped SnSe [275], from which a dark area was observed to be predicted to be amorphous. In terms of incorporating with other compounds (such as SnTe), Figure 27(i) shows a TEM image of the boundary of two phases for SnSe and SnTe [276]. Besides, TEM is also useful to characterized nanoprecipitates [67,141], as discussed in Section 2.4.…”

Section: Synthesis Of Productmentioning

confidence: 99%

“…The introduction of appropriate inclusions in polycrystalline SnSe can achieve a high peak ZT in SnSe system [84,276]. Many different types of inclusion, such as second phase (SnSe 2 [84] and Se nanowires [297]), nanoprecipitates (rock-salt-type SnSe [141] and Sn oxides [67]), simple substance (carbon black nanoinclusions [298]), compounds (SnS [129,299], 2D-MoSe 2 [300]) and compounds (SiC [259] and PbTe [301] SnS [257].…”

Section: Inclusionsmentioning

confidence: 99%

“…A maximum ZT of ~1.7 was achieved for 1 % PbSe/SnSe composites [84] due to a high S 2 σ of ~8.9 μW cm -1 [85], and 1.5 % MoSe 2 + SnSe composites [300] discussed above. Figure 30(f) also presents a comparison of the peak and average ZTs for polycrystalline SnSe incorporating with different inclusions, and shows that a peak ZT of 1.72 presents the highest value via incorporating with 1 % PbSe [84], and an average ZT = 0.62 presents the highest value via incorporating with 0.5 % mol SnTe and doped with 0.5 % Ag [276]. Table 9 also summarizes the thermoelectric performance of polycrystalline SnSe incorporated with different inclusions in more detail.…”

Section: Solid Solution and Co-synthesismentioning

confidence: 99%

“…Sometimes multiple inclusions, such as (MoS 2 + graphene)also developed[85]. In some case, both dopant and inclusion were induced at the same time, such as p-type SnTe/Ag 0.005 Sn 0.995 Se composites which was SnSe doped with 0.5 % Ag and incorporated with 0.5 mol % SnTe[276]; Ag 0.01 Sn 0.99 Se 1−x S x compounds which was SnSe doped with 1 % Ag and incorporated with SnS[302]; and n-type (Sn 0.9 Se 0.87 I 0.03 )(SnS) 0.1 which was 90 % SnSe doped with 3 % I and alloyed with 10 %…”

mentioning

confidence: 99%

See 3 more Smart Citations

High-performance SnSe thermoelectric materials: Progress and future challenge

Chen

Zhao

Zou

2018

Progress in Materials Science

439

397

View full text Add to dashboard Cite

Thermoelectric materials offer an alternative opportunity to tackle the energy crisis and environmental problems by enabling the direct solid-state energy conversion. As a promising candidate with full potentials for the next generation thermoelectrics, tin selenide (SnSe) and its associated thermoelectric materials have been attracted extensive attentions due to their ultralow thermal conductivity and high electrical transport performance (power factor). To provide a thorough overview of recent advances in SnSe-based thermoelectric materials that have been revealed as promising thermoelectric materials since 2014, here, we first focus on the inherent relationship between the structural characteristics and the supreme thermoelectric performance of SnSe, including the thermodynamics, crystal structures, and electronic structures. The effects of phonon scattering, pressure or strain, and oxidation behavior on the thermoelectric performance of SnSe are discussed in detail. Besides, we summarize the current theoretical calculations to predict and understand the thermoelectric performance of SnSe, and provide a comprehensive summary on the current synthesis, characterization, and thermoelectric performance of both SnSe crystals and polycrystals, and their associated materials. In the end, we point out the controversies, challenges and strategies toward future enhancements of the SnSe thermoelectric materials.

show abstract

Section: Synthesis Of Productmentioning

confidence: 99%

Section: Inclusionsmentioning

confidence: 99%

Section: Solid Solution and Co-synthesismentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

High-performance SnSe thermoelectric materials: Progress and future challenge

Chen

Zhao

Zou

2018

Progress in Materials Science

439

397

View full text Add to dashboard Cite

show abstract

“…[31] In particular, a high ZT value (≈1.3 at 773 K) has been reported for Ag doped SnSe samples. Few strategies have been successful in reducing the κ L of polycrystalline SnSe, even though secondary phases such as AgSnSe 2 , [27] PbSe, [32] ZnSe, [30] and SnTe [33] have been used. In addition, further reducing the already ultralow lattice thermal conductivity of SnSe is clearly a challenge.…”

mentioning

confidence: 99%

High Thermoelectric Performance in Polycrystalline SnSe Via Dual‐Doping with Ag/Na and Nanostructuring With Ag₈SnSe₆

Luo

Cai

Hua

et al. 2018

Advanced Energy Materials

103

View full text Add to dashboard Cite

Single crystalline SnSe is one of the most intriguing new thermoelectric materials but the thermoelectric performance of polycrystalline SnSe seems to lag significantly compared to that of a single crystal. Here an effective strategy for enhancing the thermoelectric performance of p‐type polycrystalline SnSe by Ag/Na dual‐doping and Ag8SnSe6 (STSe) nanoprecipitates is reported. The Ag/Na dual‐doping leads to a two orders of magnitude increase in carrier concentration and a convergence of valence bands (VBM1 and VBM5), which in turn results in sharp enhancement of electrical conductivities and high Seebeck coefficients in the Ag/Na dual‐doped samples. Additionally, the SnSe matrix becomes nanostructured with dispersed nanoprecipitates of the compound Ag8SnSe6, which further strengthens the scattering of phonons. Specifically, ≈20% reduction in the already ultralow lattice thermal conductivity is realized for the Sn0.99Na0.01Se–STSe sample at 773 K compared to the thermal conductivity of pure SnSe. Consequently, a peak thermoelectric figure of merit ZT of 1.33 at 773 K with a high average ZT (ZTave) value of 0.91 (423–823 K) is achieved for the Sn0.99Na0.01Se–STSe sample.

show abstract

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

2020

View full text Add to dashboard Cite

Tin selenide (SnSe) is one of the most promising candidates to realize environmentally friendly, cost‐effective, and high‐performance thermoelectrics, derived from its outstanding electrical transport properties by appropriate bandgaps and intrinsic low lattice thermal conductivity from its anharmonic layered structure. Advanced aqueous synthesis possesses various unique advantages including convenient morphology control, exceptional high doping solubility, and distinctive vacancy engineering. Considering that there is an urgent demand for a comprehensive survey on the aqueous synthesis technique applied to thermoelectric SnSe, herein, a thorough overview of aqueous synthesis, characterization, and thermoelectric performance in SnSe is provided. New insights into the aqueous synthesis‐based strategies for improving the performance are provided, including vacancy synergy, crystallization design, solubility breakthrough, and local lattice imperfection engineering, and an attempt to build the inherent links between the aqueous synthesis‐induced structural characteristics and the excellent thermoelectric performance is presented. Furthermore, the significant advantages and potentials of an aqueous synthesis route for fabricating SnSe‐based 2D thermoelectric generators, including nanorods, nanobelts, and nanosheets, are also discussed. Finally, the controversy, strategy, and outlook toward future enhancement of SnSe‐based thermoelectric materials are also provided. This Review guides the design of thermoelectric SnSe with high performance and provides new perspectives as a reference for other thermoelectric systems.

show abstract

Enhanced thermoelectric performance of highly oriented polycrystalline SnSe based composites incorporated with SnTe nanoinclusions

Cited by 52 publications

References 16 publications

High-performance SnSe thermoelectric materials: Progress and future challenge

High-performance SnSe thermoelectric materials: Progress and future challenge

High Thermoelectric Performance in Polycrystalline SnSe Via Dual‐Doping with Ag/Na and Nanostructuring With Ag₈SnSe₆

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

Contact Info

Product

Resources

About

Enhanced thermoelectric performance of highly oriented polycrystalline SnSe based composites incorporated with SnTe nanoinclusions

Cited by 52 publications

References 16 publications

High-performance SnSe thermoelectric materials: Progress and future challenge

High-performance SnSe thermoelectric materials: Progress and future challenge

High Thermoelectric Performance in Polycrystalline SnSe Via Dual‐Doping with Ag/Na and Nanostructuring With Ag8SnSe6

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

Contact Info

Product

Resources

About

High Thermoelectric Performance in Polycrystalline SnSe Via Dual‐Doping with Ag/Na and Nanostructuring With Ag₈SnSe₆