Thermophotonic cooling with light-emitting diodes

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The currently ubiquitous light-emitting diodes (LEDs) have revolutionized the lighting industry. Contrary to common belief, however, LEDs are much more than just simple electricity-to-light converters. They are solid-state thermodynamic machines, theoretically capable of continuous and near-reversible energy conversion between electrical, thermal and optical energy. For over 50 years, the possibility of exploiting LEDs as efficient solid-state coolers has remained largely out of reach due to the high-material-quality requirements and commercial focus on light emission. Recent promising advances in electroluminescent cooling by LEDs, however, suggest that the remaining challenges in the area may be surmountable and practical cooling could be feasible. This Perspective discusses recent achievements in electroluminescent cooling, outlining the expected promise, the remaining challenges and their potential solutions.
Original languageEnglish
Pages (from-to)205–214
Number of pages10
JournalNature Photonics
Volume14
Issue number4
DOIs
Publication statusPublished - 2020
MoE publication typeA1 Journal article-refereed

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  • Projects

    Photonics Research and Innovation

    Kaivola, M.

    01/01/201931/12/2022

    Project: Academy of Finland: Other research funding

    Equipment

    OtaNano

    Anna Rissanen (Manager)

    Aalto University

    Facility/equipment: Facility

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