Abstract

We report the numerical study of a selective thermal emitter based on a metallic multilayered structure consisting of a graded antireflection top layer, a middle layer with uniform porosity (i.e., volume fraction of voids), and a nonporous substrate layer. Simulation results show that the proposed emitters feature an emission edge in near-IR where the emissivity drops from over 0.9 to below 0.1, for both the TE and TM polarizations. Moreover, these desired emission characteristics persist for a wide range of emission angles with the emission edge nearly nonshifted, making the proposed emitters promising for achieving isotropic thermal emission. The designed emitters are particularly attractive for the thermal-photovoltaic applications by suppressing emission below the photovoltaic material bandgap, which is normally in near-IR.

© 2012 Optical Society of America

Full Article  |  PDF Article
More Like This
Metallic rugate structures for near-perfect absorbers in visible and near-infrared regions

Shiwei Shu and Yang Yang Li
Opt. Lett. 37(17) 3495-3497 (2012)

Tamm plasmon selective thermal emitters

Zih-ying Yang, Satoshi Ishii, Takahiro Yokoyama, Thang Duy Dao, Mao-guo Sun, Tadaaki Nagao, and Kuo-ping Chen
Opt. Lett. 41(19) 4453-4456 (2016)

Thermophotovoltaics with spectral and angular selective doped-oxide thermal emitters

Enas Sakr and Peter Bermel
Opt. Express 25(20) A880-A895 (2017)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics