A novel glass-fiber-aided cold-press method for fabrication of n-type Ag2Te nanowires thermoelectric film on flexible copy-paper substrate

Gao, Jie; Liu, Miao; Liu, Chengyan; Wang, Xiaoyang; Peng, Ying; Wei, Xingyu; Zhou, Jianhua; Chen, Yu; Hashimoto, Ryo; Asaka, Toru; Koumoto, Kunihito

doi:10.1039/c7ta07601k

Cited by 72 publications

(72 citation statements)

References 26 publications

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“…We found that the Ag2Se grains are well combined with the amorphous nylon membrane (Fig. 3(b)), indicating that there is a good bonding between them, resulted from the hot pressing, which is good for flexibility 20 . In Fig.…”

Section: Resultsmentioning

confidence: 85%

“…For example, most recently, Hou et al 16 prepared p-type Bi0.5Sb1.5Te3 and epoxy resin composite thick film by hot-pressing (623 K, 4 MPa) and the film shows a high power factor (α 2 σ) of 840 μW m -1 K -2 . Recently, flexible substrate, such as polyimide, fiber or paper, has been used to support inorganic materials for preparing high performance and flexible TE materials [17][18][19][20][21][22] . For instance, Gao et al 20 reported a novel glass-fiber-aided coldpressing method for flexible n-type Ag2Te films on copy paper and the power factor value was up to 85 μW m -1 K -2 at 300 K. Choi et al 21 prepared n-type HgSe nanocrystal thin film by spin-coating HgSe nanocrystal solution on a plastic substrate and the film showing a maximum power factor of 550 μW m -1 K -2 at 300K.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, flexible substrate, such as polyimide, fiber or paper, has been used to support inorganic materials for preparing high performance and flexible TE materials [17][18][19][20][21][22] . For instance, Gao et al 20 reported a novel glass-fiber-aided coldpressing method for flexible n-type Ag2Te films on copy paper and the power factor value was up to 85 μW m -1 K -2 at 300 K. Choi et al 21 prepared n-type HgSe nanocrystal thin film by spin-coating HgSe nanocrystal solution on a plastic substrate and the film showing a maximum power factor of 550 μW m -1 K -2 at 300K. Jin et al 22 deposited Bi2Te3 thick film on a cellulose fibers paper via an unbalanced magnetron sputtering technique and the composite film exhibits good flexibility and a power factor of ~250 μW m -1 K -2 at room temperature.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High Performance n-Type Ag2Se Film on Nylon Membrane for Flexible Thermoelectric Power Generator

Ding¹,

Qiu²,

Cai³

et al. 2018

Preprint

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Researches on flexible thermoelectric (TE) materials usually focus on conducting polymers (CPs) and CP-based composites; however, it is a great challenge to obtain high TE properties comparable to inorganic counterparts. Here, we report an n-type Ag2Se film on flexible nylon membrane with an ultrahigh power factor ~987.4 ± 104.1 μWm−1K−2 at 300 K and an excellent flexibility (93% of the original electrical conductivity retention after 1000 bending cycles around a 8-mm diameter rod). The flexibility is attributed to a synergetic effect of the nylon membrane and the Ag2Se film intertwined with numerous high-aspect-ratio Ag2Se grains. A TE prototype composed of 4-leg of the hybrid film generates a voltage and a maximum power of 19 mV and 460 nW, respectively, at a temperature difference of 30 K. This work opens opportunities of searching for high performance TE film for flexible TE devices.

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Section: Resultsmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High Performance n-Type Ag2Se Film on Nylon Membrane for Flexible Thermoelectric Power Generator

Ding¹,

Qiu²,

Cai³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

“…Organic/inorganic TE composites have the combined advantages of flexible polymers and inorganic TE materials. However, the flexibility of the TE device made from organic/inorganic composites is mainly realized by the flexible substrate but not the TE material itself (12)(13)(14). The inorganic component, which contributes to the TE performance of the device, displays poor flexibility and must be deposited as a thin film (usually only several micrometers thick) on the flexible organic substrate.…”

Section: Introductionmentioning

confidence: 99%

Semiconductor glass with superior flexibility and high room temperature thermoelectric performance

et al. 2020

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Most crystalline inorganic materials, except for metals and some layer materials, exhibit bad flexibility because of strong ionic or covalent bonds, while amorphous materials usually display poor electrical properties due to structural disorders. Here, we report the simultaneous realization of extraordinary room temperature flexibility and thermoelectric performance in Ag2Te1–xSx–based materials through amorphization. The coexistence of amorphous main phase and crystallites results in exceptional flexibility and ultralow lattice thermal conductivity. Furthermore, the flexible Ag2Te0.6S0.4 glass exhibits a degenerate semiconductor behavior with a room temperature Hall mobility of ~750 cm2 V−1 s−1 at a carrier concentration of 8.6 × 1018 cm−3, which is at least an order of magnitude higher than other amorphous materials, leading to a thermoelectric power factor also an order of magnitude higher than the best amorphous thermoelectric materials known. The in-plane prototype uni-leg thermoelectric generator made from this material demonstrates its potential for flexible thermoelectric device.

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“…As shown in Table 1 , our fabricated Ag 2 Te nanowire film exhibits a much higher or comparable power factor than reported Ag 2 Te‐based thermoelectric materials, such as PbTe−Ag 2 Te nanowire bulk, Ag 64 Te 36 nanofiber mats, Ag 2 Te‐glass fiber, Ag x Te y ‐Sb 2 Te 3 , and Ag 2 Te. For example, Gao et al reported a glass‐fiber‐aided cold‐press method for fabrication of a flexible n‐type Ag 2 Te nanowires thermoelectric film . Although the as‐prepared Ag 2 Te nanowires film have higher Seebeck coefficient (−142.0 µV K −1 ), the lower electrical conductivity (95.00 S cm −1 ) leads to lower power factor (192.0 µW mK −2 ).…”

Section: Resultsmentioning

confidence: 99%

Silver Telluride Nanowire Assembly for High‐Performance Flexible Thermoelectric Film and Its Application in Self‐Powered Temperature Sensor

Zeng

Yan

Ren

et al. 2018

Adv Elect Materials

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Flexible thermoelectric materials that enable harvesting electricity from human body heat or an ambient temperature gradient have potential applications in self‐powered flexible wearable electronics. The development of more efficient and flexible n‐type thermoelectric materials, however, is highly desired but challenging. Herein, reported is a nylon substrate supported fabric silver telluride (Ag2Te) nanowire network used as flexible n‐type thermoelectric materials, by the combination of vacuum filtrated assembly and mechanical pressing method. The prepared silver telluride nanowire films show optimal thermoelectric properties with the Seebeck coefficient of −129.5 µV K−1 and electrical conductivity of 187.78 S cm−1, leading to the highest power factor of 315.1 µW m−1 K2. Owing to the elimination of Peierls stress in the fabrics interlocking structure, the silver telluride nanowire films exhibit good flexibility, as the thermoelectric properties only have a change below 10% after 500 bending cycles. Based on the silver telluride nanowire film, a flexible self‐powered temperature sensor is fabricated for detecting the temperature from a human finger. The sensor shows high sensitivity that its response time and reset time are about 1.05 and 2.1 s, respectively. The results imply that silver telluride nanowire films have great potential applications in flexible thermoelectric energy conversion and self‐powered temperature sensing.

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A novel glass-fiber-aided cold-press method for fabrication of n-type Ag₂Te nanowires thermoelectric film on flexible copy-paper substrate

Abstract: A novel glass-fiber aided cold-press method for achieving n-type Ag2Te nanowires film on a flexible copy paper substrate.

Cited by 72 publications

References 26 publications

High Performance n-Type Ag<sub>2</sub>Se Film on Nylon Membrane for Flexible Thermoelectric Power Generator

High Performance n-Type Ag<sub>2</sub>Se Film on Nylon Membrane for Flexible Thermoelectric Power Generator

Semiconductor glass with superior flexibility and high room temperature thermoelectric performance

Silver Telluride Nanowire Assembly for High‐Performance Flexible Thermoelectric Film and Its Application in Self‐Powered Temperature Sensor

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