Achieving Light-Induced Ultrahigh Pyroelectric Charge Density Toward Self-Powered UV Light Detection

Kai Song, Nan Ma, Yogendra Kumar Mishra, Rainer Adelung, Ya Yang*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

From the ferroelectric material family, BaTiO3 (BTO) demonstrates quite excellent pyroelectric features due to its inherent intrinsic spontaneous polarization capability. The pyroelectric effect induced by ultraviolet (UV) illumination can be utilized to realize the self-powered detection of the UV light, where the photosensing characteristics can be determined by the change in charge density with time. Here, a method to increase the charge density by removing the underneath substrate and reducing the device thickness is reported. A floating BTO-based device with thickness of ≈0.35 mm demonstrates an ultrahigh charge density of ≈1787.2 nC cm−2 under 365 nm light illumination, which is almost 11.4 times higher than that of a 0.85 mm thick BTO device on Al2O3 substrate. These reported findings establish a new strategy for enhancing the charge density of the BTO-based devices with improved responses, which will be very helpful in upgrading the performances of future technological devices in optoelectronic devices and energy harvesters.

Original languageEnglish
Article number1800413
JournalAdvanced Electronic Materials
Volume5
Issue number1
DOIs
Publication statusPublished - Jan 2019
Externally publishedYes

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ultraviolet radiation
illumination
upgrading
ferroelectric materials
optoelectronic devices
floating
polarization
energy

Keywords

  • BaTiO
  • charge density
  • photodetectors
  • pyroelectricity
  • self-powered devices

Cite this

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title = "Achieving Light-Induced Ultrahigh Pyroelectric Charge Density Toward Self-Powered UV Light Detection",
abstract = "From the ferroelectric material family, BaTiO3 (BTO) demonstrates quite excellent pyroelectric features due to its inherent intrinsic spontaneous polarization capability. The pyroelectric effect induced by ultraviolet (UV) illumination can be utilized to realize the self-powered detection of the UV light, where the photosensing characteristics can be determined by the change in charge density with time. Here, a method to increase the charge density by removing the underneath substrate and reducing the device thickness is reported. A floating BTO-based device with thickness of ≈0.35 mm demonstrates an ultrahigh charge density of ≈1787.2 nC cm−2 under 365 nm light illumination, which is almost 11.4 times higher than that of a 0.85 mm thick BTO device on Al2O3 substrate. These reported findings establish a new strategy for enhancing the charge density of the BTO-based devices with improved responses, which will be very helpful in upgrading the performances of future technological devices in optoelectronic devices and energy harvesters.",
keywords = "BaTiO, charge density, photodetectors, pyroelectricity, self-powered devices",
author = "Kai Song and Nan Ma and Mishra, {Yogendra Kumar} and Rainer Adelung and Ya Yang",
year = "2019",
month = "1",
doi = "10.1002/aelm.201800413",
language = "English",
volume = "5",
journal = "Advanced Electronic Materials",
publisher = "Wiley",
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}

Achieving Light-Induced Ultrahigh Pyroelectric Charge Density Toward Self-Powered UV Light Detection. / Song, Kai; Ma, Nan; Mishra, Yogendra Kumar; Adelung, Rainer; Yang, Ya.

In: Advanced Electronic Materials, Vol. 5, No. 1, 1800413, 01.2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Achieving Light-Induced Ultrahigh Pyroelectric Charge Density Toward Self-Powered UV Light Detection

AU - Song, Kai

AU - Ma, Nan

AU - Mishra, Yogendra Kumar

AU - Adelung, Rainer

AU - Yang, Ya

PY - 2019/1

Y1 - 2019/1

N2 - From the ferroelectric material family, BaTiO3 (BTO) demonstrates quite excellent pyroelectric features due to its inherent intrinsic spontaneous polarization capability. The pyroelectric effect induced by ultraviolet (UV) illumination can be utilized to realize the self-powered detection of the UV light, where the photosensing characteristics can be determined by the change in charge density with time. Here, a method to increase the charge density by removing the underneath substrate and reducing the device thickness is reported. A floating BTO-based device with thickness of ≈0.35 mm demonstrates an ultrahigh charge density of ≈1787.2 nC cm−2 under 365 nm light illumination, which is almost 11.4 times higher than that of a 0.85 mm thick BTO device on Al2O3 substrate. These reported findings establish a new strategy for enhancing the charge density of the BTO-based devices with improved responses, which will be very helpful in upgrading the performances of future technological devices in optoelectronic devices and energy harvesters.

AB - From the ferroelectric material family, BaTiO3 (BTO) demonstrates quite excellent pyroelectric features due to its inherent intrinsic spontaneous polarization capability. The pyroelectric effect induced by ultraviolet (UV) illumination can be utilized to realize the self-powered detection of the UV light, where the photosensing characteristics can be determined by the change in charge density with time. Here, a method to increase the charge density by removing the underneath substrate and reducing the device thickness is reported. A floating BTO-based device with thickness of ≈0.35 mm demonstrates an ultrahigh charge density of ≈1787.2 nC cm−2 under 365 nm light illumination, which is almost 11.4 times higher than that of a 0.85 mm thick BTO device on Al2O3 substrate. These reported findings establish a new strategy for enhancing the charge density of the BTO-based devices with improved responses, which will be very helpful in upgrading the performances of future technological devices in optoelectronic devices and energy harvesters.

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KW - photodetectors

KW - pyroelectricity

KW - self-powered devices

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JO - Advanced Electronic Materials

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