Roadmap on Optical Energy Conversion

Matthew Beard, Stephan Lany, Andriy Zakutayev, Svetlana Boriskina, Martin Green, Kylie Catchpole, Eli Yablonovitch, Yoshitaka Okada, Talia Gershon, Mohammad Tahersima, Volker Sorger, Michael Naughton, Krzysztof Kempa, Mario Dagenais, Yuan Yao, Lu Xu, Xing Sheng, Noah Bronstein, John Rogers, A AlivisatosRalph Nuzzo, Jeffrey Gordon, Di Wu, Michael Wisser, Alberto Salleo, Jennifer Dionne, Peter Bermel, Jean-Jacques Greffet, Ivan Celanovic, Marin Soljacic, Assaf Manor, Carmel Rotschild, Aaswath Raman, Linxiao Zhu, Shanhui Fan, Gang Chen

Research output: Contribution to journalArticlepeer-review

90 Scopus Citations

Abstract

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. 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. 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.

Original languageAmerican English
Article numberArticle No. 073004
Number of pages48
JournalJournal of Optics (United Kingdom)
Volume18
Issue number7
DOIs
StatePublished - Jul 2016

Bibliographical note

Publisher Copyright:
© 2016 IOP Publishing Ltd.

NREL Publication Number

  • NREL/JA-5900-64521

Keywords

  • high efficiency solar energy conversion
  • MEG
  • semiconductor nanocrystals
  • solar-photochemistry

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