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Title: Roadmap on optical energy conversion

For decades, progress in the field of optical (including solar) energy conversion was dominated by advances in the conventional concentrating optics and materials design. In recent years, however, conceptual and technological breakthroughs in the fields of nanophotonics and plasmonics combined with a better understanding of the thermodynamics of the photon energy-conversion processes reshaped the landscape of energy-conversion schemes and devices. Nanostructured devices and materials that make use of size quantization effects to manipulate photon density of states offer a way to overcome the conventional light absorption limits. Novel optical spectrum splitting and photon-recycling schemes reduce the entropy production in the optical energy-conversion platforms and boost their efficiencies. Optical design concepts are rapidly expanding into the infrared energy band, offering new approaches to harvest waste heat, to reduce the thermal emission losses, and to achieve noncontact radiative cooling of solar cells as well as of optical and electronic circuitries. Light-matter interaction enabled by nanophotonics and plasmonics underlie the performance of the third- and fourth-generation energy-conversion devices, including up- and down-conversion of photon energy, near-field radiative energy transfer, and hot electron generation and harvesting. Finally, the increased market penetration of alternative solar energy-conversion technologies amplifies the role of cost-driven and environmental considerations.more » This roadmap on optical energy conversion provides a snapshot of the state of the art in optical energy conversion, remaining challenges, and most promising approaches to address these challenges. Leading experts authored 19 focused short sections of the roadmap where they share their vision on a specific aspect of this burgeoning research field. The roadmap opens up with a tutorial section, which introduces major concepts and terminology. As a result, it is our hope that the roadmap will serve as an important resource for the scientific community, new generations of researchers, funding agencies, industry experts, and investors.« less
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [5] ;  [7] ;  [5] ;  [8] ;  [8] ;  [9] ;  [9] ;  [10] ;  [11] ;  [11] ;  [11] ;  [12] ;  [11] ;  [13] more »;  [11] ;  [14] ;  [15] ;  [15] ;  [15] ;  [15] ;  [16] ;  [17] ;  [1] ;  [1] ;  [18] ;  [18] ;  [15] ;  [15] ;  [15] ;  [1] « less
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Univ. of New South Wales, Sydney (Australia)
  3. Australian National Univ., Canberra, ACT (Australia)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  5. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  6. The Univ. of Tokyo, Tokyo (Japan)
  7. IBM T. J. Watson Research Center, Yorktown Heights, NY (United States)
  8. George Washington Univ., Washington, DC (United States)
  9. Boston College, Chestnut Hill, MA (United States)
  10. Univ. of Maryland, College Park, MD (United States)
  11. Univ. of Illinois at Urbana Champaign, Urbana, IL (United States)
  12. Univ. of California, Berkeley, CA (United States)
  13. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  14. Ben-Gurion Univ. of the Negev, Sede Boqer Campus (Israel)
  15. Stanford Univ., Stanford, CA (United States)
  16. Purdue Univ., West Lafayette, IN (United States)
  17. Univ. Paris-Saclay, Palaiseau (France)
  18. Technion-Israel Institute of Technology, Haifa (Israel)
Publication Date:
OSTI Identifier:
1279500
Report Number(s):
NREL/JA-5900-64521
Journal ID: ISSN 2040-8978
Grant/Contract Number:
AC36-08GO28308
Type:
Accepted Manuscript
Journal Name:
Journal of Optics
Additional Journal Information:
Journal Volume: 18; Journal Issue: 7; Journal ID: ISSN 2040-8978
Publisher:
IOP Publishing
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MEG; semiconductor nanocrystals; high efficiency solar energy conversion; optical energy conversion; light harvesting; solar technology; photovoltaics; solar cell