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

doi:10.1021/acsami.8b01790

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

25 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 language	English
Pages (from-to)	13757-13766
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	16
DOIs	https://doi.org/10.1021/acsami.8b01790
Publication status	Published - 2018 Apr 25

Bibliographical note

Funding Information:
This study was supported by a grant from the National Research Foundation of Korea (NRF) funded by Korean government (MEST) (No. 2017R1A2A1A05001160) and by the third stage of the Brain Korea 21 Plus project in 2017.

All Science Journal Classification (ASJC) codes

Materials Science(all)

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10.1021/acsami.8b01790

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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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title = "Electroluminescent Pressure-Sensing Displays",

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.",

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

note = "Funding Information: This study was supported by a grant from the National Research Foundation of Korea (NRF) funded by Korean government (MEST) (No. 2017R1A2A1A05001160) and by the third stage of the Brain Korea 21 Plus project in 2017.",

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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 journal › Article › peer-review

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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

N1 - Funding Information: This study was supported by a grant from the National Research Foundation of Korea (NRF) funded by Korean government (MEST) (No. 2017R1A2A1A05001160) and by the third stage of the Brain Korea 21 Plus project in 2017.

PY - 2018/4/25

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N2 - 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.

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