Designing a self-classifying smart device with sensor, display, and radiative cooling functions via spectrum-selective response

Sang Yeop Lee, Hangyu Lim, Jung Ho Bae, Dongwoo Chae, Taejong Paik, Heon Lee, Soong Ju Oh

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a self-classifying smart device that intelligently differentiates and operates three functions: electroluminescence display, ultraviolet light sensor, and thermal management via radiative cooling. The optical and electrical properties of the materials and structures are designed to achieve a spectrum-selective response, which enables the integration of the aforementioned functions into one device without any noise or interference. Spectrum-selective materials that absorb, emit, and radiate light with ultraviolet to mid-infrared wavelengths and device structures designed to prevent interference are achieved by using thin metal films, dielectric layers, and nanocrystals. The designed self-classifying smart device exhibits bright blue light emission upon current supply (display), green light emission upon exposure to UV light (sensor), and radiative cooling (thermal management). Furthermore, a smart device and house system with a display, UV light sensor, and radiative cooling performance was demonstrated. The findings of this study open new avenues for device integration in next-generation wearable device fabrication.

Original languageEnglish
Pages (from-to)1087-1094
Number of pages8
JournalNanoscale horizons
Volume7
Issue number9
DOIs
Publication statusPublished - 2022 Jul 29

ASJC Scopus subject areas

  • Materials Science(all)

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