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CONCLUSION AND OUTLOOK
The rapid development of flexible and wearable electronics necessitates complementary thermal regulation
technology where flexible Peltier cooling devices would be a promising solution. Organic Peltier cooling
devices possess the potential for fulfilling flexible and wearable cooling requirements due to their intrinsic
mechanical flexibility, low thermal conductivity, light weight and ease of processing. However, despite the
steady progress in organic thermoelectrics for flexible energy harvesting applications, research on these
devices is far from satisfactory. This review summarized the key developments in the organic Peltier cooling
devices. We discussed potential approaches to advance the cooling performance of organic Peltier devices
from materials design and processing perspective and methods to ensure the reliability of organic Peltier
cooling devices for practical applications.

DECLARATIONS
Authors’ contributions
The author contributed solely to the article.

Availability of data and materials
Not applicable.

Financial support and sponsorship
Wang SJ acknowledges the start-up fund (Nos. 41.4561.179500 and 21.4561.162996) provided by Hong
Kong Baptist University.

Conflicts of interest
The author declared that there are no conflicts of interest.

Ethical approval and consent to participate
Not applicable.

Consent for publication
Not applicable.

Copyright
© The Author(s) 2024.

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