Dual-band ultraviolet photodetectors comprising nanostructured MgZnO on ZnO films

Ching Ting Lee; Tzu Shun Lin; Hsin Ying Lee; Day Shan Liu

doi:10.1116/1.5048677

Dual-band ultraviolet photodetectors comprising nanostructured MgZnO on ZnO films

Ching Ting Lee, Tzu Shun Lin, Hsin Ying Lee, Day Shan Liu

Department of Photonics

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

17 Citations (Scopus)

Abstract

To extend the wavelength sensing limitation, dual-band ultraviolet photodetectors (UV-PDs) were studied. The ZnO/MgZnO dual-band UV-PDs were constructed by stacking MgZnO nanorods on ZnO films. The wide ultraviolet wavelength from 250 to 360 nm could be detected by the proposed dual-band UV-PDs. When a reverse bias voltage of -5 V was applied on the dual-band UV-PDs, the photoresponsivity at 310 and 360 nm was 196.0 and 0.70 A/W, respectively. The noise equivalent power at 310 and 360 nm was 9.81 × 10^-15 W and 2.78 × 10^-12 W, respectively. Furthermore, the specific detectivity at 310 and 360 nm was 9.67 × 10¹³ and 3.41 × 10¹¹ cmHz^0.5W^-1, respectively.

Original language	English
Article number	061203
Journal	Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics
Volume	36
Issue number	6
DOIs	https://doi.org/10.1116/1.5048677
Publication status	Published - 2018 Nov 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Instrumentation
Process Chemistry and Technology
Surfaces, Coatings and Films
Electrical and Electronic Engineering
Materials Chemistry

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title = "Dual-band ultraviolet photodetectors comprising nanostructured MgZnO on ZnO films",

abstract = "To extend the wavelength sensing limitation, dual-band ultraviolet photodetectors (UV-PDs) were studied. The ZnO/MgZnO dual-band UV-PDs were constructed by stacking MgZnO nanorods on ZnO films. The wide ultraviolet wavelength from 250 to 360 nm could be detected by the proposed dual-band UV-PDs. When a reverse bias voltage of -5 V was applied on the dual-band UV-PDs, the photoresponsivity at 310 and 360 nm was 196.0 and 0.70 A/W, respectively. The noise equivalent power at 310 and 360 nm was 9.81 × 10-15 W and 2.78 × 10-12 W, respectively. Furthermore, the specific detectivity at 310 and 360 nm was 9.67 × 1013 and 3.41 × 1011 cmHz0.5W-1, respectively.",

author = "Lee, {Ching Ting} and Lin, {Tzu Shun} and Lee, {Hsin Ying} and Liu, {Day Shan}",

note = "Funding Information: This work was supported by the Ministry of Science and Technology of the Republic of China under Contract No. MOST-105-2221-E-006-199-MY3. Publisher Copyright: {\textcopyright} 2018 Author(s).",

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AU - Lee, Ching Ting

AU - Lin, Tzu Shun

AU - Lee, Hsin Ying

AU - Liu, Day Shan

N1 - Funding Information: This work was supported by the Ministry of Science and Technology of the Republic of China under Contract No. MOST-105-2221-E-006-199-MY3. Publisher Copyright: © 2018 Author(s).

PY - 2018/11/1

Y1 - 2018/11/1

N2 - To extend the wavelength sensing limitation, dual-band ultraviolet photodetectors (UV-PDs) were studied. The ZnO/MgZnO dual-band UV-PDs were constructed by stacking MgZnO nanorods on ZnO films. The wide ultraviolet wavelength from 250 to 360 nm could be detected by the proposed dual-band UV-PDs. When a reverse bias voltage of -5 V was applied on the dual-band UV-PDs, the photoresponsivity at 310 and 360 nm was 196.0 and 0.70 A/W, respectively. The noise equivalent power at 310 and 360 nm was 9.81 × 10-15 W and 2.78 × 10-12 W, respectively. Furthermore, the specific detectivity at 310 and 360 nm was 9.67 × 1013 and 3.41 × 1011 cmHz0.5W-1, respectively.

AB - To extend the wavelength sensing limitation, dual-band ultraviolet photodetectors (UV-PDs) were studied. The ZnO/MgZnO dual-band UV-PDs were constructed by stacking MgZnO nanorods on ZnO films. The wide ultraviolet wavelength from 250 to 360 nm could be detected by the proposed dual-band UV-PDs. When a reverse bias voltage of -5 V was applied on the dual-band UV-PDs, the photoresponsivity at 310 and 360 nm was 196.0 and 0.70 A/W, respectively. The noise equivalent power at 310 and 360 nm was 9.81 × 10-15 W and 2.78 × 10-12 W, respectively. Furthermore, the specific detectivity at 310 and 360 nm was 9.67 × 1013 and 3.41 × 1011 cmHz0.5W-1, respectively.

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Dual-band ultraviolet photodetectors comprising nanostructured MgZnO on ZnO films

Abstract

All Science Journal Classification (ASJC) codes

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