| 학회 | 한국재료학회 |
| 학술대회 | 2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 | 26권 1호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | Microstructure analysis and thermoelectric properties of Cu-In-Se compounds |
| 초록 | Over the past few years, thermoelectric energy conversion has attracted a significant attention as the alternative energy source to solve the exhaustion of fossil fuel. CuInSe2 has attractions as a promising candidate for photovoltaic cell and thermoelectric materials because of its reasonable band gap (1.04 eV). Device performance is strongly influenced by microstructural characteristics such as stacking fault, phase separation, and interfaces. Therefore, it is quite important for solar cell as well as thermoelectric device that understanding and controlling its microstructure because electron transport phenomena are significantly affected by the microstructure. Transmission electron microscopy (TEM) has been a suitable and unique method to obtain information down to the nanometer scale. The results have greatly helped in understanding the performance of the solar cells. The Cu-In-Se compound is prepared by hot pressed method. We consolidated under a pressure of 80 MPa at 500 ℃ for 45 min. The microstructural characteristics of the prepared materials are identified using XRD and TEM. As a result of TEM analysis, the presence of CuIn3Se5 was found by confirming the superlattice points in the selected area electron diffraction (SAED) pattern, and five-fold deformation twin was observed in the bright field image and the SAED pattern. Then we will discuss the relationship between microstructure and thermoelectric properties of these compounds. |
| 저자 | 김현지, 우예진, 이호성 |
| 소속 | 경북대 |
| 키워드 | Cu-In-Se compounds; microstructure analysis; TEM; thermoelectric properties |
