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Nanomaterials 2019, 9(2), 176; https://doi.org/10.3390/nano9020176

Perovskite Downconverters for Efficient, Excellent Color-Rendering, and Circadian Solid-State Lighting

1,†
,
2,3,†
,
1,3
,
1,2,3
and
1,*
1
College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
2
Department of Materials Science & Engineering, University of Central Florida, Orlando, FL 32816, USA
3
NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Received: 25 December 2018 / Revised: 21 January 2019 / Accepted: 28 January 2019 / Published: 1 February 2019
(This article belongs to the Special Issue Perovskite Materials and Devices–– Progress and Challenges)
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Abstract

Advances in materials, color rendering metrics and studies on biological effects promote the design for novel solid-state lighting sources that are highly energy efficient, excellent at color rendering and healthy for human circadian rhythms. Recently, perovskite nanocrystals have emerged as narrow-band, low-cost, color-tunable downconverters, elevating the design and development of solid-state lighting to a new level. Here, we perform a systematic optimization of using perovskite nanocrystals as downconverters to simultaneously optimize vision energy efficiency, color rendering quality and circadian action effect of lighting sources at both fixed and tunable color temperatures. Further analysis reveals the inherent differences in central wavelength and bandwidth preferences for different cases, providing a general guideline for designing circadian lighting. Through systematic optimization, highly efficient circadian lighting sources with excellent color rendering can be achieved. View Full-Text
Keywords: perovskite nanocrystals; powders; solid-state lighting; optimization; circadian effect perovskite nanocrystals; powders; solid-state lighting; optimization; circadian effect
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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He, Z.; Zhang, C.; Chen, H.; Dong, Y.; Wu, S.-T. Perovskite Downconverters for Efficient, Excellent Color-Rendering, and Circadian Solid-State Lighting. Nanomaterials 2019, 9, 176.

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