Enhancing Sensitivity of a Single ZnO Micro-/Nanowire Photodetector by Piezo-phototronic Effect

被引：477

作者：

Yang, Qing ^{[1
,2
]}

Guo, Xin ^{[2
]}

Wang, Wenhui ^{[1
]}

Zhang, Yan ^{[1
]}

Xu, Sheng ^{[1
]}

Lien, Der Hsien ^{[1
]}

Wang, Zhong Lin ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Zhejiang Univ, Dept Opt Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

ACS NANO | 2010年 / 4卷 / 10期

关键词：

ZnO nanowire; Schottky contact; piezopotential; photodetector; piezo-phototronic effect; FIELD-EFFECT TRANSISTOR; NANOWIRE; ENHANCEMENT;

D O I：

10.1021/nn1022878

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate the piezoelectric effect on the responsivity of a metal-semiconductor-metal ZnO micro-/nanowire photodetector. The responsivity of the photodetector is respectively enhanced by 530%, 190%, 9%, and 15% upon 4.1 pW, 120.0 pW, 4.1 nW, and 180.4 nW UV light illumination onto the wire by introducing a -0.36% compressive strain in the wire, which effectively tuned the Schottky barrier height at the contact by the produced local piezopotential. After a systematic study on the Schottky barrier height change with tuning of the strain and the excitation light intensity, an in-depth understanding is provided about the physical mechanism of the coupling of piezoelectric, optical, and semiconducting properties. Our results show that the piezo-phototronic effect can enhance the detection sensitivity more than 5-fold for pW levels of light detection.

引用

页码：6285 / 6291

页数：7

共 36 条

[21]

Sze S.M., 2013, SEMICONDUCTOR DEVICE

[22] Fabrication and ethanol sensing characteristics of ZnO nanowire gas sensors [J].

Wan, Q ;

Li, QH ;

Chen, YJ ;

Wang, TH ;

He, XL ;

Li, JP ;

Lin, CL .

APPLIED PHYSICS LETTERS, 2004, 84 (18) :3654-3656

[23] Direct-current nanogenerator driven by ultrasonic waves [J].

Wang, Xudong ;

Song, Jinhui ;

Liu, Jin ;

Wang, Zhong Lin .

SCIENCE, 2007, 316 (5821) :102-105

[24] Piezoelectric field effect transistor and nanoforce sensor based on a single ZnO nanowire [J].

Wang, Xudong ;

Zhou, Jun ;

Song, Jinhui ;

Liu, Jin ;

Xu, Ningsheng ;

Wang, Zhong L. .

NANO LETTERS, 2006, 6 (12) :2768-2772

[25]

Wang Z, 2010

[26] ZnO nanowire and nanobelt platform for nanotechnology [J].

Wang, Zhong Lin .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2009, 64 (3-4) :33-71

[27] Piezoelectric nanogenerators based on zinc oxide nanowire arrays [J].

Wang, ZL ;

Song, JH .

SCIENCE, 2006, 312 (5771) :242-246

[28] Large enhancement in photon detection sensitivity via Schottky-gated CdS nanowire nanosensors [J].

Wei, Te-Yu ;

Huang, Chi-Te ;

Hansen, Benjamin J. ;

Lin, Yi-Feng ;

Chen, Lih-Juann ;

Lu, Shih-Yuan ;

Wang, Zhong Lin .

APPLIED PHYSICS LETTERS, 2010, 96 (01)

[29] Optical Fiber/Nanowire Hybrid Structures for Efficient Three-Dimensional Dye-Sensitized Solar Cells [J].

Weintraub, Benjamin ;

Wei, Yaguang ;

Wang, Zhong Lin .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (47) :8981-8985

[30] Zinc oxide nanorod based photonic devices: recent progress in growth, light emitting diodes and lasers [J].

Willander, M. ;

Nur, O. ;

Zhao, Q. X. ;

Yang, L. L. ;

Lorenz, M. ;

Cao, B. Q. ;

Perez, J. Zuniga ;

Czekalla, C. ;

Zimmermann, G. ;

Grundmann, M. ;

Bakin, A. ;

Behrends, A. ;

Al-Suleiman, M. ;

El-Shaer, A. ;

Mofor, A. Che ;

Postels, B. ;

Waag, A. ;

Boukos, N. ;

Travlos, A. ;

Kwack, H. S. ;

Guinard, J. ;

Dang, D. Le Si .

NANOTECHNOLOGY, 2009, 20 (33)

← 1 2 3 4 →