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Title: Dynamic color generation with electrically tunable thin film optical coatings
Authors: Sreekanth, Kandammathe Valiyaveedu
Medwal, Rohit
Srivastava, Yogesh Kumar
Manjappa, Manukumara
Rawat, Rajdeep Singh
Singh, Ranjan
Keywords: Science::Physics
Issue Date: 2021
Source: Sreekanth, K. V., Medwal, R., Srivastava, Y. K., Manjappa, M., Rawat, R. S. & Singh, R. (2021). Dynamic color generation with electrically tunable thin film optical coatings. Nano Letters, 21(23), 10070-10075.
Project: A18A5b0056
Journal: Nano Letters 
Abstract: Thin film optical coatings have a wide range of industrial applications from displays and lighting to photovoltaic cells. The realization of electrically tunable thin film optical coatings in the visible wavelength range is particularly important to develop energy efficient and dynamic color filters. Here, we experimentally demonstrate dynamic color generation using electrically tunable thin film optical coatings that consist of two different phase change materials (PCMs). The proposed active thin film nanocavity excites the Fano resonance that results from the coupling of a broadband and a narrowband absorber made up of phase change materials. The Fano resonance is then electrically tuned by structural phase switching of PCM layers to demonstrate active color filters covering the entire visible spectrum. In contrast to existing thin film optical coatings, the developed electrically tunable PCM based Fano resonant thin optical coatings have several advantages in tunable displays and active nanophotonic applications.
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.1c03817
DOI (Related Dataset): 10.21979/N9/JMB8NW
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: embargo_20221215
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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Dynamic color generation_Supporting Information.pdf
  Until 2022-12-15
Accepted supporting information1.17 MBAdobe PDFUnder embargo until Dec 15, 2022
Dynamic color generation_Manuscript file.pdf
  Until 2022-12-15
Accepted manuscript1.82 MBAdobe PDFUnder embargo until Dec 15, 2022

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