| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
무기재료_포스터 |
| 제목 |
New high performance n-type Bi2Te3-based thermoelectric materials by incorporating K2Sex (x = 1 - 6) |
| 초록 |
Thermoelectric (TE) materials enable direct mutual conversion between heat and electric energy without moving components in the device structure. Accordingly, they are promising for eco-friendly power generation by recovering waste heat. Bi2Te3-based compounds are representative materials operating near room temperature. Their n-type materials are much underdeveloped and underperforms in comparison with the p-type counterparts. Here we report the synthesis of new n-type Bi2Te3-based system by incorporating K2Sex (x = 1 - 6). Introducing K2Se6 results in the highest peak TE figure of merit ZT of ~0.97 at 420 K among the series. The achieved high ZT is attributed to significantly suppressed thermal conductivity of ~0.99 W m-1 K-1 at 420 K. |
| 저자 |
이형석, 정인
|
| 소속 |
서울대 |
| 키워드 |
Thermoelectrics; Bi2Te3; K2Sex
|
| E-Mail |
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