摘要
提出了以狄拉克半金属(DSM)薄膜包覆的SiO_(2)为发射体、石墨烯与n型Si形成的肖特基结为热光伏电池的近场热光伏系统。从理论上讨论了DSM薄膜的厚度、费米能级、发射体的温度以及石墨烯的化学势、发射体与热光伏电池之间的真空间隙等参量对电池的输出电功率和转换效率的影响,获得了实现输出高功率和高转换效率的条件。
We proposed a thermophotovoltaic system which consists of the emitter SiO_(2) coated by a thin Dirac semimetal(DSM)film and the thermophotovoltaic cell based on a graphene/n-Si Schottky junction.The system performance is influenced by several parameters,including the thickness and Fermi level of DSM film,emitter’s temperature,graphene’s chemical potential and the vacuum gap between the emitter and the cell,etc.The effects of these parameters on the output electric power and the conversion efficiency of cells are discussed theoretically.The conditions for high output electric power and conversion efficiency are obtained.
作者
徐国定
曹召良
XU Guoding;CAO Zhaoliang(School of Physical Science and Technology,SUST,Suzhou 215009,China)
出处
《苏州科技大学学报（自然科学版）》
2022年第2期29-36,共8页
Journal of Suzhou University of Science and Technology（Natural Science Edition）
基金
中国航天科技集团公司第八研究院产学研合作项目(SAST2020-025)。
关键词
狄拉克半金属
近场热光伏
输出电功率
转换效率
Dirac semimetal
near-field thermophotovolatics
output electric power
conversion efficiency
