物理学报2026，Vol.75Issue(7)：174-185,12.DOI:10.7498/aps.75.20251376
基于hBN/BP/InSb异质结构的近场热光伏系统:多构型性能比较与优化
Near-field thermophotovoltaic system based on hBN/BP/InSb heterostructure:Multi-configuration performance comparison and optimization
摘要
Abstract
Near-field thermophotovoltaic(NFTPV)devices enable direct and efficient conversion of thermal radiation into electricity,showing great potential applications in waste heat recovery and nanoscale energy systems.To enhance conversion efficiency,we propose an NFTPV system based on an hBN/BP/InSb heterostructure,where hexagonal boron nitride(hBN)serves as the emitter,black phosphorus(BP)acts as a tunable interlayer,and indium antimonide(InSb)functions as the photovoltaic cell.The anisotropic surface plasmon polaritons(SPPs)in BP strongly couple with the hyperbolic phonon polaritons(HPPs)in hBN,thereby forming hybrid surface modes.These modes enhance photon tunneling and achieve effective spectral matching with the interband transition of InSb,resulting in a substantial increase in near-field radiative heat transfer.Using fluctuational electrodynamics,and detailed balance analysis combined with the transfer matrix method,we systematically evaluate four structural configurations,i.e.InSb-hBN,InSb/BP-hBN,InSb-BP/hBN,and InSb/BP-BP/hBN,and examine the influences of vacuum gap distance and BP carrier density on device performance.Among these configurations,the InSb/BP-hBN configuration exhibits the highest performance,with an output power density of 1.2×106 W/m2 and a conversion efficiency approaching 60％of the Carnot limit at a 10 nm gap and 900 K emitter temperature.Furthermore,theoretical analysis shows that the spatial position of BP critically determines the probability of photon tunneling,thereby governing the change in output power and efficiency among different configurations.As the free electron concentration increases from 5×1012 cm-2 to 5×1013 cm2,the hybridization between SPPs and HPPs changes markedly,leading to distinct enhancement behaviors of radiative energy above and below the InSb bandgap.These findings clarify the mechanism by which SPPs-HPPs hybridization enhances NFTPV performance,offering new insights into and design strategies for next-generation high-efficiency thermophotovoltaic devices.关键词
六方氮化硼/黑磷/废热利用/近场热光伏Key words
hexagonal boron nitride/black phosphorus/waste heat recovery/near-field thermophotovoltaic引用本文复制引用
陈博森,胡奕,蒋乐勇,吴小虎..基于hBN/BP/InSb异质结构的近场热光伏系统:多构型性能比较与优化[J].物理学报,2026,75(7):174-185,12.基金项目
国家自然科学基金(批准号:52576079,62375084)、湖南省自然科学基金(批准号:2025JJ50055)和湖南省教育厅科学研究基金(批准号:24A0050)资助的课题. Project supported by the National Natural Science Foundation of China(Grant Nos.52576079,62375084),the Natural Science Foundation of Hunan Province,China(Grant No.2025JJ50055),and the Scientific Research Fund of Hunan Provincial Education Department,China(Grant No.24A0050). （批准号:52576079,62375084）
