第十三周碩博專討演講公告(05/12)
2022.05.09
碩博專討演講公告
題目:
Eliciting High-Performance Thermoelectric Materials via Phase Diagram Engineering
主講人:吳欣潔 教授
現職:國立陽明交通大學 材料科學與工程系 副教授
內容摘要:
Thermoelectric (TE) materials and devices, enabling the conversion between thermal energy and electricity, have been a promising green technology since the 1960s. Enormous research efforts bring forth TE generator and TE refrigerator, in which the former specializes in waste heat recovery while the latter advances the spot-cooling technology. For both TE applications, the thermoelectric figure-of-merit is keen to be raised, where the S, σ and κ are intercorrelated. Through successive endeavors, the steady growth of zT values witnesses the breakthroughs in TE efficiency. The stoichiometry modulation and incorporation of foreign atoms pave the way towards better TE performance, and the chemical composition and maximal solubility in complex TE materials play vital roles. Phase diagram engineering bridges the equilibrium phase diagrams with transport properties, opening a new avenue of thermodynamic-based optimization. In this review, phase diagram engineering tunes the TE performance for the state-of-art TE materials, including the bismuth-tellurides, the zinc-antimonides, the lead-tellurides, and the germanium-tellurides. Examples of I-V-VI2 and I-III-VI2 (I = Ag, Cu; III = Ga; VI2=S, Se, Te) compounds incorporated with phase diagram engineering are also discussed. All the cases aim to validate that phase diagram engineering could be a general approach for TE materials.
時間:民國111年05月12日 星期四
地點:moodle上觀看線上影片及成功大學成功校區三系館鋼構區(3F)共同教室 A1302演講廳
題目:
Eliciting High-Performance Thermoelectric Materials via Phase Diagram Engineering
主講人:吳欣潔 教授
現職:國立陽明交通大學 材料科學與工程系 副教授
內容摘要:
Thermoelectric (TE) materials and devices, enabling the conversion between thermal energy and electricity, have been a promising green technology since the 1960s. Enormous research efforts bring forth TE generator and TE refrigerator, in which the former specializes in waste heat recovery while the latter advances the spot-cooling technology. For both TE applications, the thermoelectric figure-of-merit is keen to be raised, where the S, σ and κ are intercorrelated. Through successive endeavors, the steady growth of zT values witnesses the breakthroughs in TE efficiency. The stoichiometry modulation and incorporation of foreign atoms pave the way towards better TE performance, and the chemical composition and maximal solubility in complex TE materials play vital roles. Phase diagram engineering bridges the equilibrium phase diagrams with transport properties, opening a new avenue of thermodynamic-based optimization. In this review, phase diagram engineering tunes the TE performance for the state-of-art TE materials, including the bismuth-tellurides, the zinc-antimonides, the lead-tellurides, and the germanium-tellurides. Examples of I-V-VI2 and I-III-VI2 (I = Ag, Cu; III = Ga; VI2=S, Se, Te) compounds incorporated with phase diagram engineering are also discussed. All the cases aim to validate that phase diagram engineering could be a general approach for TE materials.
時間:民國111年05月12日 星期四
地點:moodle上觀看線上影片及成功大學成功校區三系館鋼構區(3F)共同教室 A1302演講廳