US EPA

3832901 

Journal Article 

Exploring High-Performance n-Type Thermoelectric Composites Using Amino-Substituted Rylene Dimides and Carbon Nanotubes 

Wu, G; Zhang, ZG; Li, Y; Gao, C; Wang, X; Chen, G 

2017 

1 

ACS Nano
ISSN: 1936-0851
EISSN: 1936-086X 

11 

6 

5746-5752 

English 

28511002 

10.1021/acsnano.7b01279 

WOS:000404808000053 

http://://WOS:000404808000053
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Taking advantage of the high electrical conductivity of a single-walled carbon nanotube (SWCNT) and the large Seebeck coefficient of rylene diimide, a convenient strategy is proposed to achieve high-performance n-type thermoelectric (TE) composites containing a SWCNT and amino-substituted perylene diimide (PDINE) or naphthalene diimide (NDINE). The obtained n-type composites display greatly enhanced TE performance with maximum power factors of 112 ± 8 (PDINE/SWCNT) and 135 ± 14 (NDINE/SWCNT) μW m(-1) K(-2). A short doping time of 0.5 h can ensure high TE performance. The corresponding TE module consisting of five p-n junctions reaches a large output power of 3.3 μW under a 50 °C temperature gradient. In addition, the n-type composites exhibit high air stability and excellent thermal stability. This design strategy benefits the future fabricating of high-performance n-type TE materials and devices.