Title: Illumination and radiative cooling

Abstract

Aspects of the present disclosure are directed to providing and/or controlling electromagnetic radiation. As may be implemented in accordance with one or more embodiments, an apparatus includes a first structure that contains an object, and a second structure that is transparent at solar wavelengths and emissive in the atmospheric electromagnetic radiation transparency window. The second structure operates with the first structure to pass light into the first structure for illuminating the object, and to radiatively cool the object while preserving the object's color.

Inventors:

Fan, Shanhui; Raman, Aaswath Pattabhi; Zhu, Linxiao; Rephaeli, Eden

Issue Date:

2018-03-20

Research Org.:

The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1429077

Patent Number(s):

9923111

Application Number:

14/540,935

Assignee:

The Board of Trustees of the Leland Stanford Junior University (Stanford, CA)

Patent Classifications (CPCs):

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

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G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G02B1/005 - {made of photonic crystals or photonic band gap materials
G02B5/208 - {for use with infra-red or ultraviolet radiation, e.g. for separating visible light from infra-red and/or ultraviolet radiation}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L31/02167 - {for solar cells}
H01L31/02366 - {of the substrate or of a layer on the substrate, e.g. textured ITO/glass substrate or superstrate, textured polymer layer on glass substrate}
H01L31/052 - Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E10/50 - Photovoltaic [PV] energy

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DOE Contract Number:  

AR0000316

Resource Type:

Patent

Resource Relation:

Patent File Date: 2014 Nov 13

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION