公开(公告)号：US09929690B2

公开(公告)日：2018-03-27

申请号：US14529578

申请日：2014-10-31

Applicant: Massachusetts Institute of Technology

Inventor： Andrej Lenert ,  David Bierman ,  Walker Chan ,  Ivan Celanovic ,  Marin Soljacic ,  Evelyn N. Wang ,  Young Suk Nam ,  Kenneth McEnaney ,  Daniel Kraemer ,  Gang Chen

IPC: H02S10/30 ,  H01L31/0216

CPC classification number: H02S10/30 ,  H01L31/02164

Abstract: A solar thermal photovoltaic device, and method of forming same, includes a solar absorber and a spectrally selective emitter formed on either side of a thermally conductive substrate. The solar absorber is configured to absorb incident solar radiation. The solar absorber and the spectrally selective emitter are configured with an optimized emitter-to-absorber area ratio. The solar thermal photovoltaic device also includes a photovoltaic cell in thermal communication with the spectrally selective emitter. The spectrally selective emitter is configured to permit high emittance for energies above a bandgap of the photovoltaic cell and configured to permit low emittance for energies below the bandgap.

公开(公告)号：US10073191B2

公开(公告)日：2018-09-11

申请号：US14630080

申请日：2015-02-24

Applicant: Massachusetts Institute of Technology

Inventor： Yichen Shen ,  Dexin Ye ,  Ivan Celanovic ,  Steven G. Johnson ,  John D. Joannopoulos ,  Marin Soljacic

IPC: G02B1/00 ,  G02B5/30 ,  G02B5/26 ,  G02F1/01 ,  G02B5/20

CPC classification number: G02B1/005 ,  G02B5/20 ,  G02B5/26 ,  G02B5/3066 ,  G02B5/3083 ,  G02F1/0131 ,  G02F1/0147

Abstract: A filter to transmit incident radiation at a predetermined incidence angle includes a plurality of photonic crystal structures disposed substantially along a surface normal direction of the filter. The photonic crystal structure includes a multilayer cell that comprises a first layer having a first dielectric permittivity, and a second layer having a second dielectric permittivity different from the first dielectric permittivity. The first layer and the second layer define a Brewster angle substantially equal to the predetermined incidence angle based on the first dielectric permittivity and the second permittivity. Each photonic crystal structure in the plurality of photonic crystal structures defines a respective bandgap, and the respective bandgaps of the plurality of photonic crystal structures, taken together, cover a continuous spectral region of about 50 nm to about 100 mm.

公开(公告)号：USRE47157E1

公开(公告)日：2018-12-11

申请号：US15620417

申请日：2017-06-12

Applicant: Massachusetts Institute of Technology

Inventor： Rafif E. Hamam ,  Peter Bermel ,  Ivan Celanovic ,  Marin Soljacic ,  Adrian Y. X. Yeng ,  Michael Ghebrebrhan ,  John D. Joannopoulos

IPC: G02B27/42 ,  G02B6/122 ,  H01L31/0232 ,  B82Y20/00 ,  H01L31/0216 ,  H01L31/04 ,  H02S10/30

Abstract: The present invention provides systems, articles, and methods for discriminating electromagnetic radiation based upon the angle of incidence of the electromagnetic radiation. In some cases, the materials and systems described herein can be capable of inhibiting reflection of electromagnetic radiation (e.g., the materials and systems can be capable of transmitting and/or absorbing electromagnetic radiation) within a given range of angles of incidence at a first incident surface, while substantially reflecting electromagnetic radiation outside the range of angles of incidence at a second incident surface (which can be the same as or different from the first incident surface). A photonic material comprising a plurality of periodically occurring separate domains can be used, in some cases, to selectively transmit and/or selectively absorb one portion of incoming electromagnetic radiation while reflecting another portion of incoming electromagnetic radiation, based upon the angle of incidence. In some embodiments, one domain of the photonic material can include an isotropic dielectric function, while another domain of the photonic material can include an anisotropic dielectric function. In some instances, one domain of the photonic material can include an isotropic magnetic permeability, while another domain of the photonic material can include an anisotropic magnetic permeability. In some embodiments, non-photonic materials (e.g., materials with relatively large scale features) can be used to selectively absorb incoming electromagnetic radiation based on angle of incidence.

公开(公告)号：US20160164451A1

公开(公告)日：2016-06-09

申请号：US14529578

申请日：2014-10-31

Applicant: Massachusetts Institute of Technology

Inventor： Andrej Lenert ,  David Bierman ,  Walker Chan ,  Ivan Celanovic ,  Marin Soljacic ,  Evelyn N. Wang ,  Young Suk Nam ,  Kenneth McEnaney ,  Daniel Kraemer ,  Gang Chen

IPC: H02S10/30 ,  H01L31/0216

CPC classification number: H02S10/30 ,  H01L31/02164

Abstract: A solar thermal photovoltaic device, and method of forming same, includes a solar absorber and a spectrally selective emitter formed on either side of a thermally conductive substrate. The solar absorber is configured to absorb incident solar radiation. The solar absorber and the spectrally selective emitter are configured with an optimized emitter-to-absorber area ratio. The solar thermal photovoltaic device also includes a photovoltaic cell in thermal communication with the spectrally selective emitter. The spectrally selective emitter is configured to permit high emittance for energies above a bandgap of the photovoltaic cell and configured to permit low emittance for energies below the bandgap.

Abstract translation: 太阳能热光伏器件及其形成方法包括形成在导热基板两侧的太阳能吸收器和光谱选择性发射极。 太阳能吸收器被配置成吸收入射的太阳辐射。 太阳能吸收器和光谱选择性发射器配置有优化的发射极 - 吸收器面积比。 太阳能热光伏器件还包括与光谱选择性发射体热连通的光伏电池。 光谱选择性发射器被配置为允许高于光伏电池的带隙的能量的高发射率，并且被配置为允许低于能带隙的能量的低发射率。