Enhanced thermoelectric properties of SnSe thin films grown by pulsed laser glancing-angle deposition

Suen, Chun Hung; Shi, Dongliang; Su, Yu; Zhang, Zhi; Chan, Cheuk Ho; Tang, Xiaodan; Li, Y.; Lam, Kwok Ho; Chen, Xinxin; Huang, Baoling; Zhou, Xiaoyuan; Dai, Jiyan

doi:10.1016/j.jmat.2017.05.001

Cited by 43 publications

(28 citation statements)

References 33 publications

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“…In terms of the property measurements (such as S, , and ), the Harman transient method [373][374][375] and the time-domain thermos-reflectance (TDTR) method [376][377][378] were widely used. To study the thermoelectric performance of SnSe films deposited at different angles, Figure 35(d-g) show σ, S, S 2 σ and out-of-plane κ [359]. It suggested that the film deposited at a glancing angle possesses much better σ, S, and S 2 σ than that deposited at normal angle with the entire temperature, as well as lower κ before 300 K.…”

Section: Filmsmentioning

confidence: 99%

“…For fabricating SnSe films, the synthetic methods are relatively mature, including atomic layer deposition (ALD) [335], brush plating technique [336], simple bath deposition [337][338][339], thermal evaporation method [340][341][342][343][344][345][346], solution method [347,348], hot wall epitaxy technique [349][350][351], flash evaporation method [352,353], vacuum deposition technique [309,[354][355][356][357], chemical deposition technique [358], pulsed laser deposition (PLD) [359][360][361][362][363][364][365][366], spray pyrolysis technique [367], and electrodeposition technique [368][369][370][371][372]. Most of the fabricated films are orthorhombic α-SnSe while rock-salt structure (111) SnSe film was also grown with molecular beam epitaxy (MBE) technique on Bi 2 Se 3 surface [273].…”

Section: Filmsmentioning

confidence: 99%

“…Most of the fabricated films are orthorhombic α-SnSe while rock-salt structure (111) SnSe film was also grown with molecular beam epitaxy (MBE) technique on Bi 2 Se 3 surface [273]. angle and at an 80° glancing angle [359]. For the thin film grown at a normal angle, the strong diffraction peaks of (200), (400) and (800) indicate that SnSe films were preferentially grown along the a-axis during the depositing process.…”

Section: Filmsmentioning

confidence: 99%

“…suggesting that the growth direction and orientation is not preferred. Figure 35(b) and 35(c) shows the cross sectional SEM images of film deposited at normal angle and glancing angles [359], respectively. It is clear that the film deposited at a normal angle possesses large grains, while the film grown at a glancing angle shows a nanopillar structure rather than a continuous film on the substrate, and the nanopillars are grown with a relatively high density.…”

Section: Filmsmentioning

confidence: 99%

“…It is clear that the film deposited at a normal angle possesses large grains, while the film grown at a glancing angle shows a nanopillar structure rather than a continuous film on the substrate, and the nanopillars are grown with a relatively high density. The thickness of SnSe thin film grown with the normal angle can be estimated as ~730 nm , while it is ~300 nm for its counterpart [359].…”

Section: Filmsmentioning

confidence: 99%

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High-performance SnSe thermoelectric materials: Progress and future challenge

Chen

Zhao

Zou

2018

Progress in Materials Science

441

410

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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.

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Section: Filmsmentioning

confidence: 99%

Section: Filmsmentioning

confidence: 99%

Section: Filmsmentioning

confidence: 99%

Section: Filmsmentioning

confidence: 99%

Section: Filmsmentioning

confidence: 99%

See 3 more Smart Citations

High-performance SnSe thermoelectric materials: Progress and future challenge

Chen

Zhao

Zou

2018

Progress in Materials Science

441

410

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Recent Advances in SnSe Nanostructures beyond Thermoelectricity

Wang

Huang

et al. 2022

Adv Funct Materials

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Layered SnSe is an emerging class of black phosphorus, which is non-toxic, eco-friendly, and chemically stable. Recently, SnSe nanostructures have triggered more research interest and enabled broad applications beyond demonstrating their great performances on thermoelectricity. However, there are also a great many significant studies of SnSe nanostructures beyond thermoelectricity. SnSe quantum dots, nanosheets, nanowires, and thin films with diverse morphologies have been synthesized using various chemical and physical preparation approaches. SnSe is a multi-phase semiconductor, and its nanostructures endow unique properties, including small electron effective mass, ultralow thermal conductivity, huge anisotropy, and the largest 2D piezoelectric coefficient ever predicted. The versatility of SnSe nanostructures can enable potential applications ranging from ultrafast photonics, logic devices, photodetectors, solar cells, photocatalysis, energy storage, and biology to more cutting-edge interdisciplinary subjects. In this review, the recent advances made in SnSe nanostructures are summarized, covering basics, synthesis, properties, and applications, just giving a passing comment on thermoelectricity. An in-depth perspective on the challenges and prospects of SnSe nanostructures toward broad and practical applications is also given.

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

2020

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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.

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Enhanced thermoelectric properties of SnSe thin films grown by pulsed laser glancing-angle deposition

Cited by 43 publications

References 33 publications

High-performance SnSe thermoelectric materials: Progress and future challenge

High-performance SnSe thermoelectric materials: Progress and future challenge

Recent Advances in SnSe Nanostructures beyond Thermoelectricity

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

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