Jin, Yingshi Hwang, Junphil Kim, Sujin Kim, Jungwon Kim, Sung-Jin 2024-01-19T14:32:38Z 2024-01-19T14:32:38Z 2021-09-05 2021-06 2516-0230 https://pubs.kist.re.kr/handle/201004/116928 C-60/Cu2Se thermoelectric nanocomposites were synthesized with various amounts of fullerene (C-60; 0.03, 0.3, 0.5, 0.7 mol%) incorporated in Cu2Se. The thermoelectric figures of merits (zT) of the C-60/Cu2Se nanocomposites were enhanced by 20-30% compared to that of pure Cu2Se, reaching a value of 1.4 at 773 K. The primary cause of zT enhancement is the synergetic effect of thermal conductivity reduction by phonon scattering and Seebeck coefficient increase by carrier localization that results from incorporation of C-60 nanoparticles. Theoretical calculations for Seebeck coefficient enhancement and lattice thermal conductivity reduction were performed. The Seebeck coefficients of C-60/Cu2Se nanocomposites were around 43% higher than that of pure Cu2Se, whereas the reduction of lattice thermal conductivity with incorporation of C-60 was around 40-50%. English The Royal Society of Chemistry Synergetic enhancement of thermoelectric performances by localized carrier and phonon scattering in Cu2Se with incorporated fullerene nanoparticles Article 10.1039/d1na00085c 1 Nanoscale Advances, v.3, no.11, pp.3107 - 3113 Nanoscale Advances 3 11 3107 3113 Y scie scopus 000644864600001 2-s2.0-85107407442 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article P-TYPE PBS ELECTRON COMPOSITES GRAPHENE FIGURE LAYER