Preparation and Characterization of Te/Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate)/Cu7Te4 Ternary Composite Films for Flexible Thermoelectric Power Generator

Lu, Yao1; Qiu, Yang2; Jiang, Qinglin3; Cai, Kefeng1; Du, Yong4; Song, Haijun1; Gao, Mingyuan1; Huang, Changjun1; He, Jiaqing2; Hu, Dehua3

2018-12-12

10.1021/acsami.8b15252

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

In this work, Te/poly(3,4-ethylenedioxythiophene) (PEDOT):poly(styrenesulfonate) (PSS)/Cu7Te4 ternary thermoelectric (TE) nanocomposite films were successfully fabricated by physical mixing and then drop casting. An optimum power factor of 65.3 mu W/mK(2) was acquired from a composite film containing 95 wt % PEDOT:PSS-coated Te (PC/Te) nanorods at 300 K, which was about 5 times as large as that of the PC/Cu7Te4 nanorod film and about 3 times as large as that of the PC/Te nanorod film. The power factor reached 112.3 mu W/mK(2) when the temperature was 380 K. Scanning transmission electron microscopy (STEM) and high-resolution STEM were used to observe the detailed internal microstructure of the composite film, revealing that the Te nanorods were single crystalline and the Cu7Te4 rods polycrystalline. The composite film was in fact a three-dimensional network interconnected with the PC/Te and PC/Cu7Te4 nanorods. The enhancement of the TE properties was ascribed to the synergetic effect of the two kinds of nanorods and the double-carrier filtering effect at the two heterointerfaces of Te/PEDOT:PSS and Cu7Te4/PEDOT:PSS. An eight single-leg flexible TE device consisting of the optimized composite film was fabricated, which produced a voltage of 31.2 mV and a maximum output power of 94.7 nW at a temperature gradient of 39 K.

PEDOT:PSS copper telluride tellurium thermoelectric flexible

SCI ; EI

英语

通讯

National Natural Science Foundation of China[51473052] ; National Natural Science Foundation of China[61611530550]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000453488900051

AMER CHEMICAL SOC

20185006237377

Conducting polymers ; Copper compounds ; Electric power factor ; Film preparation ; High resolution transmission electron microscopy ; Nanorods ; Scanning electron microscopy ; Tellurium ; Tellurium compounds ; Thermoelectric power ; Transmission electron microscopy

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Conducting Materials:708.2 ; Semiconducting Materials:712.1 ; Optical Devices and Systems:741.3 ; Nanotechnology:761 ; Solid State Physics:933

Web of Science

1.Tongji Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Civil Engn Mat, 4800 Caoan Rd, Shanghai 201804, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, 1088 Xueyuan Ave, Shenzhen 518055, Peoples R China
3.South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
4.Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China

Lu, Yao,Qiu, Yang,Jiang, Qinglin,et al. Preparation and Characterization of Te/Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate)/Cu7Te4 Ternary Composite Films for Flexible Thermoelectric Power Generator[J]. ACS Applied Materials & Interfaces,2018,10(49):42310-42319.

Lu, Yao.,Qiu, Yang.,Jiang, Qinglin.,Cai, Kefeng.,Du, Yong.,...&Hu, Dehua.(2018).Preparation and Characterization of Te/Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate)/Cu7Te4 Ternary Composite Films for Flexible Thermoelectric Power Generator.ACS Applied Materials & Interfaces,10(49),42310-42319.

Lu, Yao,et al."Preparation and Characterization of Te/Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate)/Cu7Te4 Ternary Composite Films for Flexible Thermoelectric Power Generator".ACS Applied Materials & Interfaces 10.49(2018):42310-42319.