Electroluminescent Pressure-Sensing Displays

Seung Won Lee, Sung Hwan Cho, Han Sol Kang, Gwangmook Kim, Jong Sung Kim, Beomjin Jeong, Eui Hyuk Kim, Seunggun Yu, Ihn Hwang, Hyowon Han, Tae Hyun Park, Seok Heon Jung, Jin Kyun Lee, Wooyoung Shim, Cheolmin Park

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Simultaneous sensing and visualization of pressure provides a useful platform to obtain information about a pressurizing object, but the fabrication of such interactive displays at the single-device level remains challenging. Here, we present a pressure responsive electroluminescent (EL) display that allows for both sensing and visualization of pressure. Our device is based on a two-terminal capacitor with six constituent layers: top electrode/insulator/hole injection layer/emissive layer/electron transport layer/bottom electrode. Light emission upon exposure to an alternating current field between two electrodes is controlled by the capacitance change of the insulator arising from the pressure applied on top. Besides capacitive pressure sensing, our EL display allows for direct visualization of the static and dynamic information of position, shape, and size of a pressurizing object on a single-device platform. Monitoring the pressurized area of an elastomeric hemisphere on a device by EL enables quantitative estimation of the Young's modulus of the elastomer, offering a new and facile characterization method for the mechanical properties of soft materials.

Original languageEnglish
Pages (from-to)13757-13766
Number of pages10
JournalACS Applied Materials and Interfaces
Volume10
Issue number16
DOIs
Publication statusPublished - 2018 Apr 25

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Display devices
Visualization
Pressurization
Electrodes
Elastomers
Light emission
Capacitors
Capacitance
Elastic moduli
Fabrication
Mechanical properties
Monitoring

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Lee, S. W., Cho, S. H., Kang, H. S., Kim, G., Kim, J. S., Jeong, B., ... Park, C. (2018). Electroluminescent Pressure-Sensing Displays. ACS Applied Materials and Interfaces, 10(16), 13757-13766. https://doi.org/10.1021/acsami.8b01790
Lee, Seung Won ; Cho, Sung Hwan ; Kang, Han Sol ; Kim, Gwangmook ; Kim, Jong Sung ; Jeong, Beomjin ; Kim, Eui Hyuk ; Yu, Seunggun ; Hwang, Ihn ; Han, Hyowon ; Park, Tae Hyun ; Jung, Seok Heon ; Lee, Jin Kyun ; Shim, Wooyoung ; Park, Cheolmin. / Electroluminescent Pressure-Sensing Displays. In: ACS Applied Materials and Interfaces. 2018 ; Vol. 10, No. 16. pp. 13757-13766.
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Lee, SW, Cho, SH, Kang, HS, Kim, G, Kim, JS, Jeong, B, Kim, EH, Yu, S, Hwang, I, Han, H, Park, TH, Jung, SH, Lee, JK, Shim, W & Park, C 2018, 'Electroluminescent Pressure-Sensing Displays', ACS Applied Materials and Interfaces, vol. 10, no. 16, pp. 13757-13766. https://doi.org/10.1021/acsami.8b01790

Electroluminescent Pressure-Sensing Displays. / Lee, Seung Won; Cho, Sung Hwan; Kang, Han Sol; Kim, Gwangmook; Kim, Jong Sung; Jeong, Beomjin; Kim, Eui Hyuk; Yu, Seunggun; Hwang, Ihn; Han, Hyowon; Park, Tae Hyun; Jung, Seok Heon; Lee, Jin Kyun; Shim, Wooyoung; Park, Cheolmin.

In: ACS Applied Materials and Interfaces, Vol. 10, No. 16, 25.04.2018, p. 13757-13766.

Research output: Contribution to journalArticle

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AU - Jeong, Beomjin

AU - Kim, Eui Hyuk

AU - Yu, Seunggun

AU - Hwang, Ihn

AU - Han, Hyowon

AU - Park, Tae Hyun

AU - Jung, Seok Heon

AU - Lee, Jin Kyun

AU - Shim, Wooyoung

AU - Park, Cheolmin

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Lee SW, Cho SH, Kang HS, Kim G, Kim JS, Jeong B et al. Electroluminescent Pressure-Sensing Displays. ACS Applied Materials and Interfaces. 2018 Apr 25;10(16):13757-13766. https://doi.org/10.1021/acsami.8b01790